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H SYSTEM CIRCUITS

2006 TOYOTA TACOMA ELECTRICAL WIRING DIAGRAM SYSTEM CIRCUITS ABS (w/ VSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ABS (w/o VSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accessory Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Audio System (Built–in Type Amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Audio System (Separate Type Amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Auto LSD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Automatic Glare–Resistant EC Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cruise Control (1GR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cruise Control (2TR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Downhill Assist Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronically Controlled Transmission and A/T Indicator (1GR–FE) . . . . Electronically Controlled Transmission and A/T Indicator (2TR–FE) . . . . . Engine Control (1GR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine Control (2TR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine Immobiliser System (1GR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine Immobiliser System (2TR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hill–Start Assist Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Key Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Light Auto Turn Off System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multi Mode 4WD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multiplex Communication System (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Outlet (115V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Outlet (12V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear Differential Lock (2WD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear Differential Lock (4WD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

62 TOYOTA TACOMA (EM01D0U)

Page 172 182 234 268 260 256 172 230 126 76 244 250 262 158 164 202 172 144 152 78 90 102 106 116 110 172 238 72 122 130 142 138 212 170 240 244 64 196 218 212 228 232 226 187 68 128 118

H

Tire Pressure Warning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TRAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wiper and Washer (w/ INT Time SW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wiper and Washer (w/o INT Time SW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page 252 172 246 134 172 222 224 206

63 TOYOTA TACOMA (EM01D0U)

Power Source 50A HEATER

30A TOWING TAIL L

2

2

1

1

1

1

2

2

1

1

2

2

2

2

1

1

1

1

100A AC SKT 1 2D

2

2

2

L

L

2

B–Y

2

2

B

2

50A AM1 2

W–L

2

W–L

G 1(A), (B), (C) Generator

B

R

30A TOWING BRK

15A FR FOG G

R

30A BATT CHG

7. 5A OBD Y

2

50A J/B

10A STOP G–W

2

B 1 A (∗3) 1 B (∗4) 1 C (∗7)

140A ALT (∗1) 120A ALT (∗2) 1 2C

1

1 2E

2

B–L(∗3) W(∗4, ∗7)

B

10A ETCS LG

2

2

30A AM2 1

1

Battery

2

2

1

1

1

1

B(∗5) B(∗5)

2

2

R(∗5) 2

Y(∗6)

2

20A EFI

10A HORN W–G

W–R

W–R

2

30A ABS NO. 2

7. 5A ALT–S W

2

1 2F 2 2F

2

L

2

L

HEAD Relay

2

1

5

3

W

2

50A ABS NO. 1 R(∗6)

2

2

1

30A TOWING GR

2

2

R

15A A/F HEATER 1

1

2

2

15A TRN–HAZ B–Y

2

2

1

2

2

2

2

1

2

2

R

7. 5A DOME

Short Pin

1

1

1

1

2

2

W

10A RADIO NO. 1

50A A/PMP W

B–R

7. 5A ECU–B

30A RADIO NO. 2 W–L

R

2

64 TOYOTA TACOMA (EM01D0U)

2

2

L–Y

LG

2

HEATER Relay 1 2

Y

2

10A A/C R

2

5

3

B–Y

2

4

2

G–Y

TAIL Relay

6 1A

L

1 2 3 4 5 6 7

2

W–B

2

∗ ∗ ∗ ∗ ∗ ∗ ∗

1

2

: w/ Trailer Towing : w/o Trailer Towing : 1GR–FE 130A Type Alternator : 1GR–FE 80A Type Alternator : w/ VSC : w/o VSC : 2TR–FE

3

5

1

2

10A TAIL

30A D FR P/W 1

P/W Relay

2

20A DR LCK

3

5

20A P FR P/W

15A PWR OUTLET

1

2

20A D RR P/W

20A P RR P/W W–L

5 1A

7. 5A ACC

10A IG1

30A WIP ACC 2

W–G

IG1 1

L–Y

ST1 3

B–W

IG2 6

B–R

ST2 7

G–B

4 AM1

W–R

5 AM2

4 1A

20A 4WD

10A IG1 NO. 2

10A WSH

7. 5A GAUGE

I7 Ignition SW

B–R

9 1B

15A IGN

EFI Relay L

2 G–W

2

5

3

1

2

2

2

7. 5A STA

B B–W

R

2

1

2

3

5

2

2

2

V

10A EFI NO. 2

DIM Relay 2

2

1

W–B

B R

2

2

1

2 2

L–W

Y–B 10A HEAD (HI LH) R–B

2

1

2 2

P

4 10A HEAD (HI RH) R–B

2

1

2 2

R–W

10A HEAD (LO LH) 2

W

2

1

2 2

R–Y

10A HEAD (LO RH) W

2

1

2 2

R–B

65 TOYOTA TACOMA (EM01D0U)

Power Source : Parts Location Code G1

See Page A

40 (1GR–FE)

B

40 (1GR–FE)

Code G1

See Page C

I7

Code

42 (2TR–FE) 45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1A 1B 2C 2D 2E 2F

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

24 (1GR–FE)

Engine No.2 Wire and Engine Room J/B (Engine Compartment Left)

24 (2TR–FE)

Engine Wire and Engine Room J/B (Engine Compartment Left)

25

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

66 TOYOTA TACOMA (EM01D0U)

See Page

Memo

67 TOYOTA TACOMA (EM01D0U)

Starting V(∗4 A/T) L–Y

ACC 4 AM1

5 AM2

IG1 1

L–Y

B–W

ST1 3

B–W

V(∗3 A/T)

IG2

E 5(B), E 6(C), E 8(D) Engine Control Module

ST2 7

G–B

W–L

W–R

I7 Ignition SW

2

8 B (∗3) 30 D (∗4) NSW STA 11 C (∗3) 12 D (∗4)

2

2

(∗3)

B–Y

2

11 IH1

(∗4)

1 B–Y

5

STA Relay

1

2 140A ALT (∗1) 120A ALT (∗2)

3

2

Y–G

2

1

8 2A

5 2B

4 2B

7 2A

2

W–B

1

30A AM2

50A AM1

2

(∗4)

B–Y

B–Y

2

1 2C

1 C

M

S 5(A), (B), S 6(C) Starter

26 2A

B–Y

(M/T)

B–Y

(A/T)

(∗5) (∗5)

B–R

7 IH1

B–Y

1 A (∗3) 1 B (∗4)

W–B

B

Y–G

B–Y

6 EB1

33 2A B–Y(M/T)

Battery

EA

B–Y(∗5)

W–B

W–B

W–B

B–Y(A/T)

EB

68 TOYOTA TACOMA (EM01D0U)

V(∗4 A/T) ∗ ∗ ∗ ∗ ∗

L–Y

: w/ Trailer Towing : w/o Trailer Towing : 1GR–FE : 2TR–FE : 4WD M/T

L–Y

B–W

1 2 3 4 5

V(∗3 A/T)

2

4 1A

1 10A IG1 NO. 2

7. 5A STA

2 2

V

LG

(∗5)

14 1C

6 2A

13 DC

3 2B

15 DB

5 2A

V (M/T)

L–B

9 PB

V

1

11 PA

3 PD

(∗5)

LG

2

3

+S

IG

(A/T)

12 DD

(M/T)

18 PB

L–B

V (∗5)

4 DD

4

L

P1 Park/Neutral Position SW

C8 Clutch Start SW

V

(M/T)

2

(∗4 A/T)

V

V

D6 Diode (Clutch Start)

(∗3 A/T)

1

2

B

P

–S

E

N

4

1

C7 Clutch Start Cancel SW

(∗5)

(∗5)

W–B

B–Y

B–Y

(A/T)

B–Y

(M/T)

5

B–Y(M/T) 20 A

J 4(A), J 5(B) Junction Connector

B–Y(A/T) B–Y(∗5)

(∗5)

W–B

15 B

IC

69 TOYOTA TACOMA (EM01D0U)

Starting : Parts Location Code

See Page

Code

44

C8

44

D6

44

J4

A

45

J5

B

45

E5

B

44

E6

C

44

E8

See Page

C7

D I7

P1

Code

44 45

41 (1GR–FE)

See Page

P1 S5 S6

43 (2TR–FE) A

41 (1GR–FE)

B

43 (2TR–FE)

C

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1A

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B and

2B

24

Engine Wire and Engine Room J/B (Engine Compartment Left)

2C

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

DB

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1C

DC DD PA PB PD

: Connector Joining Wire Harness and Wire Harness Code EB1 IH1

See Page 52 (1GR–FE) 53 (2TR–FE) 55

Joining Wire Harness and Wire Harness (Connector Location) Engine No.2 Wire and Engine Room Main Wire (Inside of Engine Room R/B) Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

: Ground Points Code EA EB IC

See Page 52 (1GR–FE) 53 (2TR–FE) 52 (1GR–FE) 53 (2TR–FE) 54

Ground Points Location Front Right Fender Front Left Fender Instrument Panel Brace RH

70 TOYOTA TACOMA (EM01D0U)

41 (1GR–FE) 43 (2TR–FE)

Memo

71 TOYOTA TACOMA (EM01D0U)

Ignition

IG2 6

E 4(A) Engine Control Module B–R

ST2

I7 Ignition SW

IGT1 9 1B

IGT2

P–L

B–R

10 1B

IGT3 10 A (1GR–FE) 15 A (2TR–FE)

9 A 16 A

P

W–R

8 A 17 A

LG

5 AM2

2

2 4 EA1

B–R

30A AM2

1 1 2C

B–R

B–R

B–R

W–B

1

LG

B–R

3 IGT2

3

+B

GND

IGF

GND

IGF

GND

IGF

4

2

4

2

4

2

W–B

W–R

W–B

W–R

IGT3

W–R

I3 Ignition Coil (No. 3)

+B

P–L

B–R

1

(2TR–FE)

W–B

(1GR–FE)

2

3 IGT1

W–B

I1 Ignition Coil (No. 1)

Battery

+B

I2 Ignition Coil (No. 2)

1

P

B–R

1

N1 Noise Filter (Ignition)

B–R

B

B–R

W–R W–R W–R

W–B

W–B

W–B

W–B W–B

EC

ED

EH

72 TOYOTA TACOMA (EM01D0U)

(1GR–FE)

(2TR–FE)

EE

E 4(A) Engine Control Module

IGT5

IGF1 24 A (1GR–FE) 23 A (2TR–FE)

W–R

G

(1GR–FE)

G

GR

(1GR–FE)

GR

13 A

(1GR–FE)

LG–B B–R

IGT6

12 A

(1GR–FE)

IGT4 11 A 14 A

B–R

B–R

(1GR–FE)

IGF

4

2

W–B

GND

W–R

2

IGT6

(1GR–FE)

IGF

4

3

+B

(1GR–FE)

GND

W–R

W–R

1

IGT5

(1GR–FE)

2

W–B

IGF

4

(1GR–FE)

GND

3

+B

I6 Ignition Coil (No. 6)

B–R

1

(1GR–FE)

3 IGT4

W–B

I4 Ignition Coil (No. 4)

+B

I5 Ignition Coil (No. 5)

1

LG–B

B–R

(1GR–FE)

9 W–R(1GR–FE)

10

W–R

11

W–R

W–R

12

W–R

W–R

13

W–R

W–R

5

W–B

W–B (1GR–FE)

4

W–R

J12 Junction Connector

73 TOYOTA TACOMA (EM01D0U)

Ignition : Parts Location Code E4

See Page A

Code

44

I3

41 (1GR–FE)

I1

43 (2TR–FE)

I4

41 (1GR–FE)

I2

43 (2TR–FE)

I5

See Page 41 (1GR–FE)

Code

41 (1GR–FE)

43 (2TR–FE)

I7

45

41 (1GR–FE)

J12

45

43 (2TR–FE) 41 (1GR–FE)

N1

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1B

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

2C

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

: Connector Joining Wire Harness and Wire Harness Code EA1

See Page 52 (1GR–FE) 53 (2TR–FE)

Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)

: Ground Points Code EC ED EE EH

See Page

See Page

I6

Ground Points Location

52 (1GR–FE)

Near the Front Differential

52 (1GR–FE)

Rear Side of Right Bank Cylinder Block

53 (2TR–FE)

Rear Side of Cylinder Block

74 TOYOTA TACOMA (EM01D0U)

41 (1GR–FE) 43 (2TR–FE)

Memo

75 TOYOTA TACOMA (EM01D0U)

Charging

(IG)

(IG) 10A IG1 NO. 2

7. 5A GAUGE

3 1J

(IG)

9 1J

2

P

(∗4)

7 PF

14 DD

11 DB

4 DC

15 PA

W

13 DC

(∗4)

12 DB

W

GR

1 DB

L

(∗4)

W

(∗4)

W

(∗3)

P

(∗4)

LG

3 EB1

(∗3)

GR

2 IH1

(∗4)

GR

(∗3)

2 EB1

11 EA1

B–L(∗5)

B

5 EB1

W(∗4, ∗6)

LG

(∗3)

GR

GR

1 2C

(∗4)

1

(∗3)

1

10

GR

2 7. 5A ALT–S

140A ALT (∗1) 120A ALT (∗2)

2

ALT

16

(∗3)

1 2E

LG

L 18

E4 Engine Control Module (∗3)

C9 Combination Meter

B5 Body ECU

Charge

21

W(∗3)

W(∗4)

W(∗4, ∗6)

B–L(∗5)

V

14 1C

10A IG1

Battery

∗ ∗ ∗ ∗ ∗ ∗

1 2 3 4 5 6

4 D

2 D

1 D

3 D

L

IG

S

M

: w/ Trailer Towing : w/o Trailer Towing : 1GR–FE : 2TR–FE : 1GR–FE 130A Type Alternator : 1GR–FE 80A Type Alternator

IC Regulator

G 1(A), (B), (C), G 2(D) Generator

76 TOYOTA TACOMA (EM01D0U)

1 A (∗5) 1 B (∗6) 1 C (∗4) B

: Parts Location Code

See Page

B5

44

C9

44

E4

44

Code G1

See Page A

40 (1GR–FE)

B

40 (1GR–FE)

C

42 (2TR–FE)

Code G2

See Page D

40 (1GR–FE) 42 (2TR–FE)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1C

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1J

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2C

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

24 (1GR–FE)

Engine No.2 Wire and Engine Room J/B (Engine Compartment Left)

24 (2TR–FE)

Engine Wire and Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

PA

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

PF

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

2E DB DC DD

: Connector Joining Wire Harness and Wire Harness Code

See Page

EA1

53 (2TR–FE)

Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)

EB1

52 (1GR–FE)

Engine No.2 Wire and Engine Room Main Wire (Inside of Engine Room R/B)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

77 TOYOTA TACOMA (EM01D0U)

Engine Control for 1GR–FE (BAT)

(BAT) 15A A/F HEATER

20A EFI

2

15A IGN

2 2

2 13 1C

B–R

L 5 AM2

(IG)

IG2 6

15 1I B–R O

O

ST2

B–R

B–R

L

9 1B

7 EA1

I7 Ignition SW

L G–W

2

11 1B

1

3

2

2

1

5

2

3

O

B

B–R

L–W 2

A/F HEATER Relay

5 EFI Relay

B–R

2

2

2

5

1

3

2

C/OPN Relay

W–R

L

G–W

B–W

2 2

2

2

W

W–B

2 11 2A 30 2A

31 2A 14 IA1

10 2A 33 2A

B

2 Battery

B

9 2A

W–B

10A EFI NO. 2

B

1

L–B

1 2C

L–B

B

1

2

B

W–B

30A AM2

B

B–W

2

2

L–B

2

2

L–W

L–B

W–B

B

L–W L–W

EA

W–B

W–B

W

EB

78 TOYOTA TACOMA (EM01D0U)

(ST)

7. 5A STA

2

V

2

B–R

B–R

O L G–W

L

G–W

V

B–W

6 2A

L–B

L

O

V

(A/T)

NSW

8 E

3 E

9 E

MREL

BATT

IGSW

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module

4 DD

5

+B

30 C

10 E

1 E

L–B

2

FC

11 C

Y–R

STA 2

2

18 PB 11 PA

8 B

B–Y

1

V

2

4

1 IA1

3 2B

(A/T)

3

1

V

2

2

(M/T)

FUEL PUMP Relay

2

D6 Diode (Clutch Start)

V (M/T)

10 IA1

5 2A

G–W

B–W

FPR

+B2 2 E

9 PB

B

P1 Park/Neutral Position SW

B

V

(A/T)

3 1H

2 1H

L

P N

2

5

B–Y

(A/T)

L–B

(M/T)

B

1

B–Y M

4 2B

5

W–B

1

4

4

(M/T)

B–R 2

F19 Fuel Suction Pump and Gage Assembly

Y–R

1 EA1

F11 Fuel Pump Resistor

8 IB1

C8 Clutch Start SW

B–R

B–R

B–Y

Y–R

12 DD

5 2B

7 2A

L–B 6 1B B

B

L–W

L–W

L–W

W

W

W–B

L–W

BD

79 TOYOTA TACOMA (EM01D0U)

18 2A 14 2A 15 2A 6 2B

L–W

L–W

L–W

L–W

L–W

L–W

V 4(A) VSV (Purge)

1 30 A

1 A VG

8 2B 9 2B 10 2B 29 A E2G

2 2 A 3 A 2 A 4 A

7 2B 22 A THA

5 B

E2G THA

+B E2

1 A 5 A 2

+B

OC1–

HT2B

OC2+

33 B

OX2B

4 E2

BR

W

80

TOYOTA TACOMA (EM01D0U)

BR

18 A 1 A

G

VG OC1+

W

PRG # 60

Y

L

G–Y

L–B

L–W

L–R

G–W

LG

F 7(A) Fuel Injector (No. 3)

F8 Fuel Injector (No. 4)

F9 Fuel Injector (No. 5)

F10 Fuel Injector (No. 6) B–R

B–R

B–R

B–R

B–R

C4 Camshaft Timing Oil Control Valve (RH)

C3 Camshaft Timing Oil Control Valve (LH)

P4 Power Steering Oil Pressure SW

2

OC2–

OX1B

2

+B

BR

34 A # 50 1

(∗1)

ACIS # 40

B

# 30 1

2

(∗1)

# 20 1 2

1 3 3 1

HT2B

OX2B OX1B HT1B

H3 Heated Oxygen Sensor (Bank 1 Sensor 2) L–W

33 A 1 A 2

BR

R–L

G

1 2 A 2

BR

R–W

# 10 2 B–R

L

R–Y

R

1 A B–R

H4 Heated Oxygen Sensor (Bank 2 Sensor 2) L–W

Y

B

2 A

F6 Fuel Injector (No. 2)

B–R

B–R

M 1(A) Mass Air Flow Meter

W–L

R–L

B–R

BR

L–W

V3 VSV (ACIS)

F 5(A) Fuel Injector (No. 1)

B–R

LG

Engine Control for 1GR–FE ∗ 1 : Shielded ∗ 2 : w/ VSC ∗ 3 : w/o VSC (BAT)

10A ETCS

2 2

1

6 IA1

1 1

2 C 3 C 4 C 5 C 6 C 7 C 17 C 16 C 15 C 14 C 10 C

PSW

7 E +BM

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module

HT1B

4

E2

L–W

BR

L–W

L–W

BR

W

L–W

(BAT)

(IG)

(BAT) 10A IG1 NO. 2

50A J/B

10A STOP

2

2 2

14 1C

2

L

LG G–W

(∗2)

G–W

5 DD

3

2 1B

3 DB

2

2 L L

(∗3)

(∗2)

L

2

G

22 B

LG (∗2)

6 1C

L

G

7 1J

2

1 2

G–B

12 A

4

L

J 4(A), J 5(B) Junction Connector

5

5

L

(∗2)

G

TAIL Relay

12 DC 2

1

STOP LP CTRL Relay

13 DC

(∗2)

3 10A TAIL

1

2

S10 Stop Lamp SW

2

(∗2)

LG

(∗2)

(∗2)

6 1A

15 E

13 D

STP

ELS

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module MPMP 6 E

G

L–W

9 ID2

3 IB1

G

L–W

1 MGND

2 2B

J12 Junction Connector

W BR

3

1

BR

VLVB

6

BR

BR

7

2

1 2B

BR

W

4 2A

M

9 MTRB

Vent Valve

R

6 2 A

Leak Detection Pump

HA1A 1 A

BR

+B

11 ID2

W–B

B

W

W–B

A1A–

2 A

BR

NE– 20 C

1 A

C 5(A) Crankshaft Position Sensor

+B

21 C

(∗1)

4 A

NE+

2 B

R

L

3 A A1A+

2

HA1A

A1A– 30 B

P

A2A–

(∗1)

R

A2A+

1

22 B

W

(∗1)

4

A5 Air Fuel Ratio Sensor (Bank 2 Sensor 1) B–W

B–W

3

HA2A

A1A+

A2A– 31 B

W

23 B

A 4(A) Air Fuel Ratio Sensor (Bank 1 Sensor 1) W

A2A+

HA2A 1 B

L1 Canister Pump Module

BR

BR

BR W–B

W

BR

L–W

EE

81 TOYOTA TACOMA (EM01D0U)

Engine Control for 1GR–FE

IGF

IGT2

IGF

IGT3

IGF

IGT4

IGF

IGT5

IGF

IGT6

IGF

3

2

3

2

3

2

3

2

3

2

3

2

LG–B

W–R

GR

W–R

J12 Junction Connector

12

13

11 5

4

9

G

W–R

IGT1

W–R

I6 Ignition Coil (No. 6)

LG

I5 Ignition Coil (No. 5)

W–R

I4 Ignition Coil (No. 4)

P–L

I3 Ignition Coil (No. 3)

W–R

I2 Ignition Coil (No. 2)

P

I1 Ignition Coil (No. 1)

W–R W–R

10

P

P–L

LG

W–R

LG–B

GR

G

W–R

8 A

9 A

10 A

24 A

11 A

12 A

13 A

IGT2

IGT1

IGT3

IGF1

IGT4

IGT5

IGT6

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module VV2– 28 C

VV1+

VV1–

19 C

29 C

G

Y–B

VV2+ 18 C

R

21 A

BR

THW

28 A

L

E2

PPMP 22 E

Y

VPMP 5 E

VC 23 A

GR

12 ID2

10 ID2

4 ID2

5 IH1

4 IH1

VGND

SGND

E2 Engine Coolant Temp. Sensor

3

4

BR

2

L

8

L

GR

BR

V–W

2

VOUT

VCC

1

2

VVL+

VVL– VC

V6 VVT Sensor RH

BR

3 ID2

V5 VVT Sensor LH

V–W

L

L

BR

1

2

VVR+

VVR– VC

3

3

L

L

L

BR

1 BR

L

IF1

L

1

IF1

L

6

L

IF1

L

7

IF1

BR

5

BR

Canister Pressure Sensor

IF1

L

2

L

L1 Canister Pump Module

BR

BR

W–B

W–B

BR

BR

W–B

W–B

82 TOYOTA TACOMA (EM01D0U)

7 IA1

8 IA1

9 IA1

GR–B

L–W

21 E

19 E

27 E

VPA2

5 IM1

10

II1

R

R–B

26 E

IJ1

B–W

R

18 E

3

G–W

R–Y

20 E

II1

L

LG–B

5

R

11 IA1

EPA2

GSW2 22

B–W

12 IA1

VCPA

OUT 9

G–W

L–W

13 IA1

VPA

AC1 9

L

1

EPA

ACT 7

VCP2

3

GR–B

VPA2

2

R–B

EPA2

4

R

VCPA

6

R–Y

VPA

5

LG–B

EPA

A14 A/C Amplifier

V8 Voltage Inverter

A19 Accelerator Position Sensor

A21 Airbag Sensor Assembly Center

∗ 1 : Shielded

25 D

24 D

12 D

32 D

ACT

VCP2

ELS2

AC1

F/PS

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module

2

1

BR

K2 Knock Control Sensor (Bank 2)

W–B

L

IF1

(2WD A/T)

4

W

1

5 EE1

(∗1)

T1 Throttle Body Assembly

W–B

3

1 EE1

W–B

K1 Knock Control Sensor (Bank 1)

IF1

2 EE1

W

2

(∗1)

E2 3

B

6 EE1

EKNK 28 B

B

4 EE1

L

M

BR

15 B

KNK1 29 B

(∗1) R

14 B

R

1 M–

G

2 M+

EKN2 20 B

G

W–B

4 VTA2

P

5 VC

(∗1)

6 VTA

G–B

KNK2 21 B

(∗1)

SEL 26 D

(∗1)

GE01 17 A

L

G–W

M– 4 A

BR

M+ 5 A

J 5(B) Junction Connector

VTA2 19 A

(2WD A/T)

VTA1 20 A

W–B

BR W–B

IC

83 TOYOTA TACOMA (EM01D0U)

Engine Control for 1GR–FE

T10 Transponder Key ECU

Y Y–B

P–B

2 E

23 E

33 D

34 D

14

TC

CANH

CANL

CANL

W–B

SPD

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module

Y

L–W

8 D

L4

27 IA1

2 DA

1 F

W

1 E

9 DB

P–B

J 9(D), J10(E), J11(F) Junction Connector

ST–Plug

Y–B

Y–B

(4WD A/T)

13 C

4WD

2 D

B

8 C

IMI

1 D

P–B

16 D

IMO

10 PA

L–W

V–W

II1

15 D

2

21 PA

Y–B

4

L–W

II1

2

(4WD A/T)

LG–B

(4WD)

2 PA

LG–B

17 PB

(4WD)

13

L–W

EFIO

12

LG–B

3

7. 5A OBD

V–W

LG–B

EFII

Transfer Indicator SW (L4 Position)

ADD Actuator Assembly

(BAT)

6

13

16

CANH

TC

BAT

D4 Data Link Connector 3 SG

TAC

CG

7 A

6 A

4 B

7 B

6 B

3 B

35 D

1 D

14 D

30 D

5

9

4

BR

W–B

W–B

W–B

W–B

W–B

W–B

W–B

B–W

GR–B

BR

W–B

B–W

W–B

W

1 C

E01

E02

E03

E04

E05

ME01

EOM

J14 Junction Connector

E1

TACH

THWO

2 BR 13

GR–B

B–W

W–B

W–B

B–W

7 PE

6 PE

W–B 1 W–B

EE

EF

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

BR

W–B

18 PA

J13 Junction Connector

2

IE

84 TOYOTA TACOMA (EM01D0U)

EE

IC

(IG)

(BAT)

7. 5A GAUGE

(IG)

7. 5A ECU–B

10A IG1

2 3 1J

2

9 1J

R

P

16 1C

7 PF

2 PD

13 1K

4 PA

R

19

1

R–Y

GR–B

P

V1 Vehicle Speed Sensor (Combination Meter) W

R–Y

36 IA1

SI

R–Y

(M/T)

3

(M/T)

W (M/T)

17 A

SE

3

(M/T)

R–Y

16 B

6

W–B

1 B

Speed Control

Tacho Control 18 A

2

IG+

(A/T)

Temp. Control 11 A

B–W

9 IH1

8 IH1

Speed Sensor (Front LH, RH)

(A/T)

BR

II1

7

1

2

J 4(A), J 5(B) Junction Connector

9

9

B–W

BR

17

GR–B

Malfunction Indicator Lamp

C9 Combination Meter

21

(M/T)

V

12 PC

V–W

(M/T)

V–W

B–W

L

FL+

FR+

RL–

RR+

20 A 15 B

6 A 16 B

5 A 44 B

B

RL+

FL–

P

R

3 A 40 B

17 A (w/ VSC) 39 B (w/o VSC) FR– RR– 19 A (w/ VSC) 45 B (w/o VSC)

O

G

4 A 9 B

BR

SP1

18 A 10 B

Y

12 A 18 B

W–B

S 1(A), (B) Skid Control ECU with Actuator

B–W

2

J1 Junction Connector

Speed Sensor (Rear)

IA

85 TOYOTA TACOMA (EM01D0U)

Engine Control for 1GR–FE System Outline The engine control system utilizes a microcomputer and maintains overall control of the engine, transmission etc. An outline of the engine control is given here. 1. Input Signals (1) Engine coolant temp. signal circuit The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance which varies according to the engine coolant temp. The engine coolant temp. is input into TERMINAL THW of the engine control module as a control signal. (2) Intake air temp. signal circuit The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a control signal to TERMINAL THA of the engine control module. (3) Oxygen sensor signal circuit The oxygen density in the exhaust emission is detected and is input as a control signal from the heated oxygen sensors to TERMINALS OX1B and OX2B of the engine control module. (4) RPM signal circuit The camshaft position is detected by the VVT sensor LH and RH, and is input into TERMINALS VV1+ and VV2+ of the engine control module as a control signal. Also, the engine RPM is detected by the crankshaft position sensor and the signal is input into TERMINAL NE+ of the engine control module. (5) Throttle position sensor signal circuit The throttle position sensor detects the throttle valve opening angle as a control signal, which is input into TERMINALS VTA1 and VTA2 of the engine control module. (6) Vehicle speed circuit The vehicle speed sensor detects the vehicle speed, and the signal is input into TERMINAL SPD of the engine control module via the combination meter, from TERMINAL SP1 of the skid control ECU with actuator. (A/T) The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input to TERMINAL SPD of the engine control module via the combination meter. (M/T) (7) Battery signal circuit Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned on, the voltage for engine control module start up power supply is applied through the EFI relay, to TERMINALS +B and +B2 of the engine control module. The current from the IGN fuse flows to TERMINAL IGSW of the engine control module, and voltage is constantly applied to TERMINAL +BM. (8) Intake air volume signal circuit The intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the engine control module. (9) Stop lamp SW signal circuit The stop lamp SW is used to detect whether the vehicle is braking or not, and the signal is input into TERMINAL STP of the engine control module as a control signal. (10) Starter signal circuit To confirm whether the engine is cranking, the voltage applied to the starter motor when the engine is cranking is detected, and is input into TERMINAL STA of the engine control module as a control signal. (11) Engine knock signal circuit Engine knocking is detected by the knock sensors, and is input into TERMINALS KNK1 and KNK2 of the engine control module as a control signal. (12) A/C SW signal system The operating voltage of the A/C magnetic clutch is detected and input in the form of a control signal to TERMINAL AC1 of the engine control module. (13) Air fuel ratio signal circuit The air fuel ratio is detected and input as a control signal into TERMINALS A1A+, A2A+ of the engine control module.

86 TOYOTA TACOMA (EM01D0U)

2. Control System ∗ SFI system The SFI system monitors the engine condition through the signals input from each sensors to the engine control module. The control signal is sent to the engine control module TERMINALS #10, #20, #30, #40, #50 and #60 to operate the injector (Fuel injection). The SFI system controls the fuel injection by the engine control module in response to the driving conditions. ∗ ESA system The ESA system monitors the engine condition through the signals input from each sensors to the engine control module. The best ignition timing is decided according to this data and the data memorized in the engine control module. The control signal is output to TERMINALS IGT1, IGT2, IGT3, IGT4, IGT5 and IGT6, and these signals control the igniter to provide the best ignition timing. ∗ Heated oxygen sensor heater control system The heated oxygen sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaust emission is low), and warms up the heated oxygen sensors to improve their detection performance. The engine control module evaluates the signals from each sensors, and outputs current to TERMINALS HT1B or HT2B to control the heater. ∗ Air fuel ratio sensor heater control system The air fuel ratio sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaust emission is low), and warms up the air fuel ratio sensor to improve detection performance of the sensor. The engine control module evaluates the signals from each sensor, current is output to TERMINALS HA1A and HA2A, controlling the heater. ∗ Fuel pump control system The engine control module supplies current to TERMINAL FPR, and controls the operation speed of the fuel pump with the FUEL PUMP relay. ∗ ACIS The ACIS includes a valve in the bulkhead separating the surge tank into two parts. This valve is opened and closed in accordance with the driving conditions to control the intake manifold length in two stages, for increased engine output in all ranges from low to high speeds. ∗ ETCS–i The ETCS–i controls the engine output at its optimal level in accordance with the opening of the accelerator pedal, under all driving conditions. ∗ VVT–i Controls the intake camshaft to an optimal valve timing in accordance with the engine condition. 3. Diagnosis System When there is a malfunction in the engine control module signal system, the malfunctioning system is recorded in the memory. The malfunctioning system can be found by reading the code displayed on the malfunction indicator lamp. 4. Fail–Safe System When a malfunction has occurred in any system, there is a possibility of causing engine trouble due to continued control based on that system. In that case, the fail–safe system either controls the system using the data (Standard values) recorded in the engine control module memory, or else stops the engine.

87 TOYOTA TACOMA (EM01D0U)

Engine Control for 1GR–FE : Parts Location Code A4

See Page A

Code

See Page

Code

See Page

40 (1GR–FE)

F9

40 (1GR–FE)

J14

45

A5

40 (1GR–FE)

F10

40 (1GR–FE)

K1

41 (1GR–FE)

A14

44

F11

40 (1GR–FE)

K2

41 (1GR–FE)

A19

44

A21

44

C3

40 (1GR–FE)

H3

41 (1GR–FE)

C4

40 (1GR–FE)

H4

41 (1GR–FE)

P1 P4

C5

A

46 (*1)

F19

46 (*1)

L1

48 (*2) M1

48 (*2) A

41 (1GR–FE) 41 (1GR–FE)

40 (1GR–FE)

I1

41 (1GR–FE)

C8

44

I2

41 (1GR–FE)

C9

44

I3

41 (1GR–FE)

D4

44

I4

41 (1GR–FE)

S10

45

D6

44

I5

41 (1GR–FE)

T1

41 (1GR–FE)

E2

40 (1GR–FE)

I6

41 (1GR–FE)

T10

45

A

44

I7

45

V1

41 (1GR–FE)

E5

B

44

E6

C

44

J4

A

45

E7

D

44

J5

B

45

V5

41 (1GR–FE)

E8

E

44

J9

D

45

V6

41 (1GR–FE)

F5

A

40 (1GR–FE)

J10

E

45

40 (1GR–FE)

J11

F

45

E4

F6 F7

A F8

J1

S1

45

40 (1GR–FE)

J12

45

40 (1GR–FE)

J13

45

41 (1GR–FE) A

41 (1GR–FE)

B

41 (1GR–FE)

V3 V4

41 (1GR–FE) A

V8

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1A 1B

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

2B

24

Engine Wire and Engine Room J/B (Engine Compartment Left)

2C

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1C 1H 1I 1J 1K

DA DB DC DD PA PB PC PD PE PF

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

88 TOYOTA TACOMA (EM01D0U)

41 (1GR–FE)

47 (*1) 48 (*2)

: Connector Joining Wire Harness and Wire Harness Code

See Page

EA1

52 (1GR–FE)

Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)

EE1

52 (1GR–FE)

Engine Wire and Sensor Wire (Rear Side of Right Bank Cylinder Block)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IB1

54

Frame Wire and Engine Room Main Wire (Left Kick Panel)

ID2

54

Frame Wire and Instrument Panel Wire (Left Kick Panel)

IF1

55

Engine Wire and Engine Wire (Behind the Glove Box)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

IM1

55

Floor No.3 Wire and Instrument Panel Wire (Under the Console Box)

: Ground Points Code

See Page

Ground Points Location

EA

52 (1GR–FE)

Front Right Fender

EB

52 (1GR–FE)

Front Left Fender

EE

52 (1GR–FE)

Rear Side of Right Bank Cylinder Block

EF

52 (1GR–FE)

Rear Side of Left Bank Cylinder Block

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

BD

56 (*1) 57 (*2)

* 1 : Double Cab

Near the Rear Differential * 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

89 TOYOTA TACOMA (EM01D0U)

Engine Control for 2TR–FE (BAT)

(BAT) 15A A/F HEATER

20A EFI

2

15A IGN

2 2

2 13 1C

B–R

L 5 AM2

(IG)

IG2 6

15 1I B–R O

O

ST2

1

3

2

2

1

5

2

3

O

B 2

A/F HEATER Relay

5 EFI Relay

B–R

2

2

2

5

1

3

2

C/OPN Relay

L W–R

2

11 1B

B–R

7 EA1

G–W

L–W

B–R

9 1B

L

G–W

B–R

L

I7 Ignition SW

2 2

2

2

2

W

8 IB1

11 2A 30 2A

31 2A

4 2A

B

B

2 Battery

1 2B

W

10 2A 33 2A

9 2A

W–B

10A EFI NO. 2

B

1

F19 Fuel Suction Pump and Gage Assembly

2

4 M 5

W–B

1 2C

B–R

B

B

1

W–B

W–B

30A AM2

B

B–R

2

2

L–B

2

L–B

2

L–W

B

W–B

L–W L–W

EA

EB

90 TOYOTA TACOMA (EM01D0U)

W–B

W–B

W–B

W

BD

(ST)

(BAT)

7. 5A STA

50A A/PMP

2

2 2

V

W

2

B–R

B–R

O

O

L

L

G–W

G–W

V

V(A/T)

6 2A

1

L–B

(M/T)

W

2 18 PB

A 6(A), A 7(B) Air Injection Control Driver

1 A

(A/T)

V

3 2B

V

D6 Diode (Clutch Start)

V (M/T)

5 2A

+B

3 PD

4 DD

Y–R

R–W

9 EA1

6 EA1

2 EA1

8 EA1

R–W

EIV

Y–R

EIP

G–R

DI 2 B

G–R

BATT 5 B

L–W

VV

L–R

E 1 B

6 B

W–B

VB 2 A

4 B

3 B

9 PB

V

L

L–R

B

B

1

P N

2

A9 Air Pump 5 2B

1

Y–R 1

W–B

4 2B

M

G–R

W–B

B–Y

(A/T)

(M/T)

5

7 2A

R–W

A10 Air Switching Valve

2

2

B–Y

(A/T)

(M/T)

4

P1 Park/Neutral Position SW

C8 Clutch Start SW

L–B

12 DD

B–Y

B–Y

L–B

L–B

B

B

L–W L–W

L–W

L–W

L–W W–B W

W–B

W–B

W

EA

91 TOYOTA TACOMA (EM01D0U)

Engine Control for 2TR–FE (BAT)

∗ 1 : Shielded ∗ 2 : w/ VSC ∗ 3 : w/o VSC

10A ETCS

2 2

B–R

B–R

LG

B–R

1

V(A/T)

NSW

2

R

G

L–W

W

LG

2

B

2 B

R–L

2

O

2 B

6 IA1

L

30 D

1 IA1

1

G–W

V

(A/T)

10 IA1

C2 Camshaft Timing Oil Control Valve

B–R

1 B

F8 Fuel Injector (No. 4)

B–R

1

F 7(B) Fuel Injector (No. 3)

B–R

1 B

F6 Fuel Injector (No. 2)

G–W

F 5(B) Fuel Injector (No. 1)

L

B–R

O

8 D

3 D

9 D

6 B

5 B

2 B

1 B

13 A

12 A

7 D

MREL

BATT

IGSW

# 10

# 20

# 30

OC1+

# 40

+BM

OC1–

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module

R–W

R–L

3 B

2 B

4 B

2 B

VG

E2G

THA

+B

E2

1 B

5 B

B

9 2B

10 2B

BR

6 1B

G–R

B–Y

THA 29 B

1 B

L–W

L–B

Y–R

B–Y

R–W

E2G 30 B

R–Y

3 1H

M 1(B) Mass Air Flow Meter

14 IA1

VG 28 B

Y

11 IH1

PRG 23 B

V 4(B) VSV (Purge)

B

+B 1 D

L–B

FC 25 D

L–W

STA 12 D

B–Y

G–R

AIDI 20 B

Y–R

AIRP 11 A

R–W

AIRV 24 A

9

IF1

6 2B

BR

15 2A

L–W

L–W

L–W

L–W

13 2A 18 2A 14 2A

L–W

B

L–W

L–B

L–W

L–W

L–W

BR

W–B

W–B

W

W L–W

92 TOYOTA TACOMA (EM01D0U)

(BAT)

(IG)

(BAT) 10A IG1 NO. 2

50A J/B

10A STOP

2

2 2

14 1C

L

2 G–W

G

3 2

L

2 6 1C

5 DD

2 1B

3 DB

1 2

2

LG

L

L

(∗3)

(∗2)

L

(∗2)

L

L

(∗2)

G

22 B

2

(∗2)

G

7 1J

5 4

G–B

12 A

J 4(A), J 5(B) Junction Connector

5

1

(∗2)

TAIL Relay

12 DC 2

2

S10 Stop Lamp SW

13 DC

G–W

2

STOP LP CTRL Relay

LG

3 10A TAIL

1

(∗2)

(∗2)

6 1A

4 C

15 D

STP

ELS

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module

R

2 B

1 B

+B

HA1A

2 B

1 B

(∗1)

A1A–

5 PA 12 PA

(∗1)

C1 Camshaft Position Sensor

A1A+

1 PA 1

NE–

NE

3 B GND

C 5(B) Crankshaft Position Sensor

2

W

BR

BR

E2 4

BR

+B

2

A 4(B) Air Fuel Ratio Sensor (Bank 1 Sensor 1)

BR

G

(∗1)

27 A

G

G

G

G

4 B

NE+

34 A

L

3 B

NE–

G2 26 A

(∗1)

HT1B

1 A

R

OX1B

HA1A

A1A– 31 A

L

G

1

21 A

(∗1)

W

3

A1A+

P

HT1B 2 A

H3 Heated Oxygen Sensor (Bank 1 Sensor 2) L–W

(∗1)

OX1B 25 A

J12 Junction Connector 7

2 6

BR

1

BR

3 BR

BR

8 BR

BR

L–W BR

BR

BR

W–B

W

BR

L–W

L–W

BR

W–B

EH

93 TOYOTA TACOMA (EM01D0U)

IGF

IGT2

IGF

IGT3

IGF

IGT4

IGF

3

2

3

2

3

2

3

2

W–R

LG

W–R

LG–B

W–R

1

J12 Junction Connector

12

M 3

13

LG

W–R

LG–B

32 B

4WD

11

P–L

21 B

4

P

G–W

(4WD)

5

LG–B

G2 Generator

IGT1

P–L

I4 Ignition Coil (No. 4)

W–R

I3 Ignition Coil (No. 3)

L

2 PA

I2 Ignition Coil (No. 2)

P

17 PB

I1 Ignition Coil (No. 1)

P4 Power Steering Oil Pressure SW

LG–B

(4WD)

ADD Actuator Assembly

Engine Control for 2TR–FE

17 A

16 A

15 A

23 A

14 A

PSW

IGT2

IGT1

IGT3

IGF1

10 A

IGT4

ALT

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module E2

G

L–W

V–W

BR

GR

11 ID2

9 ID2

3 IB1

3 ID2

12 ID2

10 ID2

4 ID2

L–W

V–W

BR

GR

L

THW

28 A

32 A

L

G

W–B

PPMP 31 D

Y–B

VPMP 5 D

W–B

BR

MPMP 6 D

BR

E1 3 A

2

BR

E2 Engine Coolant Temp. Sensor

3 SGND

4 VOUT

1 VCC

BR

2 VGND

BR

8 VLVB

BR

5

IF1

BR

Canister Pressure Sensor

IF1

BR

2

L

Leak Detection Pump

M

9 MTRB

L

1 MGND

4 IH1

Vent Valve

6

5 IH1

L

L1 Canister Pump Module

BR BR

BR

W–B

W–B

W–B

BR

BR

L–W

W–B

94 TOYOTA TACOMA (EM01D0U)

∗ 1 : Shielded

7 IA1

8 IA1

9 IA1

GR–B

L–W

21 D

19 D

27 D

VPA2

A21 Airbag Sensor Assembly Center

5 IM1

10

II1

R

R–B

26 D

IJ1

B–W

R

18 D

3

G–W

R–Y

20 D

II1

L

LG–B

5

R

11 IA1

EPA2

GSW2 22

B–W

12 IA1

VCPA

OUT 9

G–W

L–W

13 IA1

VPA

AC1 9

L

1

EPA

ACT 7

VCP2

3

GR–B

VPA2

2

R–B

EPA2

4

R

VCPA

6

R–Y

VPA

5

LG–B

EPA

A14 A/C Amplifier

V8 Voltage Inverter

A19 Accelerator Position Sensor

25 C

24 C

20 C

32 C

ACT

VCP2

ELS2

AC1

F/PS

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module GE01

W

2 EF1

1 EF1

W

VC

6

5

4

2

1

VTA

VC

VTA2

M+

M–

2

1

3

L

L

L

BR

M

3 IF1

1

IF1

3

IF1

4

IF1

W–B

L

L

L

W–B

6

T1 Throttle Body Assembly

K1 Knock Control Sensor (Bank 1)

E2

L

EKNK 30 A

B

A8 Air Pressure Sensor

AIP E2

29 A

BR

L 2

1

KNK1

8 A

B

P

M– 4 A

(∗1)

M+ 5 A

L

VTA2 19 A

(∗1)

L

VTA1 20 A

G–B

GR

VC 18 A

G–W

AIP 22 B

BR W–B W–B

W–B

BR

W–B

W–B

95 TOYOTA TACOMA (EM01D0U)

Engine Control for 2TR–FE (BAT)

7. 5A OBD

T10 Transponder Key ECU 2 2

V–W 13

P–B

ST–Plug

14 CANL

W–B

CANL

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module

Y

34 C

CANH

P–B

33 C

Y–B

L–W

17 C TC

27 IA1

2 DA

1 F

2 E

W

1 E

9 DB

8 C SPD

IMI

2 D

B

16 C

IMO

J 9(D), J10(E), J11(F) Junction Connector

15 C

1 D

P–B

II1

L–W

V–W

4

L–W

II1

LG–B

3

Y–B

Y

12

L–W

EFIO

LG–B

EFII

6

13

16

TC

CANH

BAT

D4 Data Link Connector 3 SG

TAC

CG

6 A

4 B

7 B

3 B

22 D

1 C

14 C

30 C

5

9

4

W–B

W–B

W–B

W–B

W–B

W–B

B–W

GR–B

BR

W–B

B–W

W–B

W

7 A

E02

E03

E04

ME01

EC

J14 Junction Connector

E01

TACH

THWO

1 BR 13

GR–B B–W

W–B

B–W

17 PA

6 PE

W–B

W–B

W–B

W–B

7 PE

18 PA

W–B

W–B 1 W–B

EH

EG

W–B

W–B

J13 Junction Connector

2

IE

96 TOYOTA TACOMA (EM01D0U)

EH

IC

(IG)

(BAT)

7. 5A GAUGE

(IG)

7. 5A ECU–B

10A IG1

2 3 1J

2

9 1J

R

P

16 1C

7 PF

2 PD

13 1K

4 PA

R

19

1

P

V1 Vehicle Speed Sensor (Combination Meter) W

9 IH1

R–Y

(M/T)

W (M/T)

R–Y

36 IA1

SI 3

(M/T)

Speed Control 17 A

SE

3

(M/T)

16 B

R–Y

1 B

6

(A/T)

Tacho Control 18 A

2

W–B

Temp. Control 11 A

B–W

IG+

2

R–Y

GR–B

8 IH1

Speed Sensor (Front LH, RH)

(A/T)

BR

II1

7

1

J 4(A), J 5(B) Junction Connector

9

9

B–W

BR

17

GR–B

Malfunction Indicator Lamp

C9 Combination Meter

21

(M/T)

V

12 PC

V–W

(M/T)

V–W

B–W

L

FL+

RL–

FR+ RR+

20 A 15 B

6 A 16 B

5 A 44 B

B

RL+

FL–

P

R

3 A 40 B

17 A (w/ VSC) 39 B (w/o VSC) FR– RR– 19 A (w/ VSC) 45 B (w/o VSC)

O

G

4 A 9 B

BR

SP1

18 A 10 B

Y

12 A 18 B

W–B

S 1(A), (B) Skid Control ECU with Actuator

B–W

2

J1 Junction Connector

Speed Sensor (Rear)

IA

97 TOYOTA TACOMA (EM01D0U)

Engine Control for 2TR–FE System Outline The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An outline of engine control is given here. 1. Input Signals (1) Engine coolant temp. signal system The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance which varies according to the engine coolant temp. Thus the engine coolant temp. is input as a control signal to TERMINAL THW of the engine control module. (2) Intake air temp. signal system The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a control signal to TERMINAL THA of the engine control module. (3) Power steering oil pressure signal system Power steering oil pressure is detected by the power steering oil pressure SW and is input as a control signal to TERMINAL PSW of the engine control module. (4) RPM signal system Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor. Camshaft position is input as a control signal to TERMINAL G2 of the engine control module, and engine RPM is input into TERMINAL NE+. (5) Throttle signal system The throttle position sensor detects the throttle valve opening angle, which is input as a control signal to TERMINALS VTA1 and VTA2 of the engine control module. (6) Vehicle speed signal system The vehicle speed is detected by the ABS speed sensor and the signal is input to TERMINAL SPD of the engine control module via the combination meter and the skid control ECU with actuator. (A/T) The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input to TERMINAL SPD of the engine control module via the combination meter. (M/T) (7) NSW signal system (A/T) The Park/Neutral position SW detects whether the shift position is in neutral or not, and inputs a control signal to TERMINAL NSW of the engine control module. (8) A/C SW signal system The operating voltage of the A/C SW is detected and is input as a control signal to TERMINAL AC1 of the engine control module. (9) Battery signal system Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned to on, voltage for engine control module operation is applied via the EFI relay to TERMINAL +B of the engine control module. (10) Intake air volume signal system Intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the engine control module. (11) STA signal system To confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input as a control signal to TERMINAL STA of the engine control module. (12) Oxygen sensor signal system The oxygen density in the exhaust gases is detected and is input as a control signal into TERMINAL OX1B of the engine control module. To maintain stable detection performance by the oxygen sensor, a heater is used for warming the sensor. The heater is also controlled by the engine control module (HT1B). (13) Engine knock signal system Engine knocking is detected by the knock sensor and input as a control signal to TERMINAL KNK1 of the engine control module. (14) Electrical load signal system When systems which cause a high electrical load such as the rear window defogger, taillight are turned on, a signal is input to TERMINALS ELS and ELS2 as a control signal. (15) Air fuel ratio signal circuit The air fuel ratio is detected and input as a control signal into TERMINAL A1A+ of the engine control module.

98 TOYOTA TACOMA (EM01D0U)

2. Control System ∗ SFI system The SFI system monitors the engine conditions through the signals, which are input from each sensor to the engine control module. Based on this data and the program memorized in the engine control module, the most appropriate fuel injection timing is decided and current is output to TERMINALS #10, #20, #30 and #40 of the engine control module, operating the injectors (to inject fuel). This is the system which finely controls the fuel injection in response to the driving conditions, through the engine control module. ∗ ESA system The ESA system monitors the engine conditions using the signals, which are input to the engine control module from each sensor. Based on this data and the program memorized in the engine control module, the most appropriate ignition timing is decided and current is output to TERMINALS IGT1, IGT2, IGT3 and IGT4 of the engine control module. This output controls the ignition coil and igniter No. 1 , No. 2 , No. 3 and No. 4 to produce the most appropriate ignition timing for the driving conditions. ∗ Knock control system Knock control system controls the gate based on the engine rotation speed and detects knocking by the peak value of the knock sensor output during the gate open period, and then controls it to the most suitable ignition timing in proportion to the driving condition. ∗ Evapoparge control system This system leads the vapor stuck to the canister to the serge tank in order not to agitate the air fuel by adjusting the fuel injection volume. The signal at this time will be output from TERMINAL PRG of the engine control module to VSV (Purge). 3. Diagnosis System With the diagnosis system, when there is a malfunctioning in the engine control module signal system, the malfunction system is recorded in the memory. The malfunctioning system can be found by reading the display (Code) of the malfunction indicator lamp. 4. Fail–Safe System When a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control based on the signals from that system, the fail–safe system either controls the system by using the data (Standard values) recorded in the engine control module memory or else stops the engine. : Parts Location Code

See Page

Code

See Page

Code

See Page

A4

B

42 (2TR–FE)

E7

C

44

J10

A6

A

42 (2TR–FE)

E8

D

44

J11

A7

B

42 (2TR–FE)

F5

B

42 (2TR–FE)

J12

45

42 (2TR–FE)

J13

45

42 (2TR–FE)

J14

45

42 (2TR–FE)

K1

43 (2TR–FE)

45

F

45

A8

42 (2TR–FE)

A9

42 (2TR–FE)

A10

42 (2TR–FE)

A14

44

A19

44

A21

44

G2

42 (2TR–FE)

C1

42 (2TR–FE)

H3

43 (2TR–FE)

P1

C2

42 (2TR–FE)

I1

43 (2TR–FE)

P4

42 (2TR–FE)

I2

43 (2TR–FE)

C8

44

I3

43 (2TR–FE)

C9

44

I4

43 (2TR–FE)

D4

44

I7

45

T1

43 (2TR–FE)

D6

44

45

T10

45

E2

42 (2TR–FE)

J4

A

45

V1

C5

B

F6

E

F7

B F8

48 (*2)

F19

49 (*3)

J1

E4

A

44

J5

B

45

E5

B

44

J9

D

45

48 (*2)

L1 M1

49 (*3) B

S1

43 (2TR–FE) 43 (2TR–FE) A

43 (2TR–FE)

B

43 (2TR–FE)

S10

V4

45

43 (2TR–FE) B

V8

43 (2TR–FE)

43 (2TR–FE) 48 (*2)

: Relay Blocks Code 2

See Page 24

* 1 : Double Cab

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

99 TOYOTA TACOMA (EM01D0U)

Engine Control for 2TR–FE : Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1A 1B

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

2B

24

Engine Wire and Engine Room J/B (Engine Compartment Left)

2C

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1C 1H 1I 1J 1K

DA DB DC DD PA PB PC PD PE PF

: Connector Joining Wire Harness and Wire Harness Code

See Page

EA1

53 (2TR–FE)

Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)

EF1

53 (2TR–FE)

Engine Wire and Sensor Wire (Left Side of Cylinder Block)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IB1

54

Frame Wire and Engine Room Main Wire (Left Kick Panel)

ID2

54

Frame Wire and Instrument Panel Wire (Left Kick Panel)

IF1

55

Engine Wire and Engine Wire (Behind the Glove Box)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

IM1

55

Floor No.3 Wire and Instrument Panel Wire (Under the Console Box)

: Ground Points Code

See Page

Ground Points Location

EA

53 (2TR–FE)

Front Right Fender

EB

53 (2TR–FE)

Front Left Fender

53 (2TR–FE)

Rear Side of Cylinder Block

EG EH IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

BD

57 (*2) 58 (*3)

* 1 : Double Cab

Near the Rear Differential * 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

100 TOYOTA TACOMA (EM01D0U)

Memo

101 TOYOTA TACOMA (EM01D0U)

Engine Immobiliser System for 1GR–FE (BAT)

(IG)

15A IGN

20A EFI

2

2

2 1I

15 1I

O

L

O

O

8 E

3 E

9 E

E04

E05

ME01

7 B

6 B

3 B

EOM

SEL 26 D

IMO

IMI

35 D

15 D

16 D

L–W

E03 4 B

LG–B

E02 6 A

W–B

E01 7 A

W–B

2 1H

9 2A 33 2A

6 1B

W–B

B

3 1H

(2WD A/T)

B

11 2A 30 2A

B

E1 1 C

2

W–B

2

+B2 2 E

W–B

+B 1 E

W–B

2

IGSW

W–B

3

BATT

W–B

EFI Relay

MREL

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module

W–B

1

BR

5

2

O

L

L 2

L

1 IA1

G–W

10 IA1

G–W

G–W

L

LG–B

W–B

(2WD A/T)

W–B

J14 Junction Connector

J5 Junction Connector

B

W–B

2

13

15

W–B

B

L–W 14

W–B

W–B

W–B

W–B (2WD A/T)

EA

EB

EE

EF

102 TOYOTA TACOMA (EM01D0U)

(BAT) ∗ 1 : Double Cab ∗ 2 : Access Cab

7. 5A ECU–B

2 2

T9 Transponder Key Amplifier

D4 Data Link Connector 3

O

Transponder Key Coil SIL

R

W

7

ANT1

ANT2

O

R

W

2

1

9

+B

TXCT

KSW

CTY 7

1 1K

6

2 1J

II1

LP

W–B

W–B

W–B 11

2

(∗2)

G–Y

1

J13 Junction Connector

W–B (2WD A/T) IC

IL1

1

IE

W–B

W–B

W–B

D11 Door Courtesy SW (Driver' s Side)

2

W–B

2 BF1

(∗2)

E 7

G–Y

5

1

(∗1)

6

7 1F

W–B

J5 Junction Connector

L–W

U1 Unlock Warning SW

G–B

10 1K

LG–B

IND 8

R–Y

T10 Transponder Key ECU

V–W

3

5 AGND

G–Y

3

4

CODE

7

Security Indicator Light

II1

W–B

L–W 4

GND 16

LG–B

EFII 12

15

H7 Hazard Warning Signal SW Assembly

EFIO 13

14 VC5

D

AGND

G–B

IG

5

L

3 DA

TXCT

4

P–G

14 1J

1

GR–B

10 DA

LG–R

CODE

VC5 16 1C

BB

103 TOYOTA TACOMA (EM01D0U)

Engine Immobiliser System for 1GR–FE : Parts Location Code

See Page

D4 D11

Code

See Page

Code

See Page

44

E6

C

44

J13

45

46 (*1)

E7

D

44

J14

45

48 (*2)

E8

E

44

T9

45

E4

A

44

H7

45

T10

45

E5

B

44

J5

45

U1

45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1B

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

DA

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

1C 1F 1H 1I 1J 1K

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

IL1

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BF1

57 (*2)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)

: Ground Points Code

See Page

Ground Points Location

EA

52 (1GR–FE)

Front Right Fender

EB

52 (1GR–FE)

Front Left Fender

EE

52 (1GR–FE)

Rear Side of Right Bank Cylinder Block

EF

52 (1GR–FE)

Rear Side of Left Bank Cylinder Block

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

BB

56 (*1) 57 (*2)

* 1 : Double Cab

Floor Seat Cross Member RH * 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

104 TOYOTA TACOMA (EM01D0U)

Memo

105 TOYOTA TACOMA (EM01D0U)

Engine Immobiliser System for 2TR–FE (BAT)

(IG)

15A IGN

20A EFI

2

2

2 1I

15 1I

O

L

O

O

5

2

1

O

L

L 2

L

1 IA1

G–W

10 IA1

G–W

G–W

L

8 D

3 D

9 D

EFI Relay

MREL

E1 3 A

7 A

6 A

4 B

7 B

3 B

22 D

29 D

15 C

16 C

W–B

W–B

W–B

W–B

W–B

W–B

W–B

LG–B

L–W

1

2

E01

E02

E03

E04

ME01

EC

EOM

IMO

IMI

2

W–B

B

2

+B 1 D

BR

2

IGSW

B

3

BATT

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module

11 2A 30 2A

3 1H

9 2A 33 2A

6 1B

1

13

W–B

J14 Junction Connector

LG–B

BR

J12 Junction Connector

B

W–B W–B

B

L–W 8

EA

W–B

W–B

W–B

EB

EH

EG

106 TOYOTA TACOMA (EM01D0U)

(BAT) ∗ 1 : Regular Cab ∗ 2 : Access Cab

7. 5A ECU–B

2 2

T9 Transponder Key Amplifier

D4 Data Link Connector 3

O

Transponder Key Coil SIL

R

W

7

ANT1

ANT2

O

R

W

2

1

9

+B

TXCT

KSW

CTY 7

1 1K

6

2 1J

II1

LP

W–B

W–B

W–B 11

2

(∗2)

G–Y

1

J13 Junction Connector IC

IL1

1

IE

W–B

W–B

W–B

D11 Door Courtesy SW (Driver' s Side)

2

W–B

2 BF1

(∗2)

E 7

G–Y

5

1

(∗1)

6

7 1F

W–B

J5 Junction Connector

L–W

U1 Unlock Warning SW

G–B

10 1K

LG–B

IND 8

R–Y

T10 Transponder Key ECU

V–W

3

5 AGND

G–Y

3

4

CODE

7

Security Indicator Light

II1

W–B

L–W 4

GND 16

LG–B

EFII 12

15

H7 Hazard Warning Signal SW Assembly

EFIO 13

14 VC5

D

AGND

G–B

IG

5

L

3 DA

TXCT

4

P–G

14 1J

1

GR–B

10 DA

LG–R

CODE

VC5 16 1C

BB

107 TOYOTA TACOMA (EM01D0U)

Engine Immobiliser System for 2TR–FE : Parts Location Code

See Page

D4 D11

Code

44

E7

48 (*2)

E8

See Page

Code

See Page

C

44

J13

45

D

44

J14

45

49 (*3)

H7

45

T9

45

E4

A

44

J5

45

T10

45

E5

B

44

J12

45

U1

45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1B

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

DA

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

1C 1F 1H 1I 1J 1K

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

IL1

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BF1

57 (*2)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)

: Ground Points Code

See Page

Ground Points Location

EA

53 (2TR–FE)

Front Right Fender

EB

53 (2TR–FE)

Front Left Fender

53 (2TR–FE)

Rear Side of Cylinder Block

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

EG EH

BB

57 (*2) 58 (*3)

* 1 : Double Cab

Floor Seat Cross Member RH * 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

108 TOYOTA TACOMA (EM01D0U)

Memo

109 TOYOTA TACOMA (EM01D0U)

Headlight R

W

R

W R–B 2

(BAT)

2

(BAT)

R–B

1

10A IG1 NO. 2

W

R

R

(IG)

2

20A DR LCK

3

7. 5A ECU–B

4

DIM Relay 2

2

2

2

5

2

2

R

Y–B

1

HEAD Relay

3

W

2

R–B

29 IA1 R–B 30 IA1

2

5

14 A

1 2C

4

IG

6 ECUB

ALTB

B 5(A) Body ECU

15 A DIM

8

1

R–W

9 1I

18 1H

7 1L

R–G

W–B

W–B

HF

L

DRL 5 A

18 A

5 1C

HF

HL

HU

TL

TR

OFF

3 DD

14 DD

GR

11 DB LG–B

GR

GR

High

2 IH1

(∗3)

2 EB1

(∗2)

G–Y

(M/T)

G–Y

(A/T)

(∗1)

Head Low

Dimmer SW

15 DC

Tail

GR

EL

(∗3)

T

1 DB

11 DD

11

(∗2)

17

(∗1)

IJ1

20 H

Light Control SW

10

R–W

IJ1

P

9

G–Y

GR

Battery

PKB 24

(∗1)

GND

16 A

HEAD

LG–B

HU

17 A

P

B

HRLY

Y–B

16 1C

W

5

Turn SW

LH N

15

13

LG(∗1)

L

W–B(∗1) LG(∗1) Y(∗1)

6 A

IC

W–B

5 B

W–B

W–B

W–B

J 4(A), J 5(B) Junction Connector

W–B

12

Y(∗1)

RH

C11 Combination SW

4

1

G2 Generator

P6 Parking Brake SW

Flash

4

2

J1 Junction Connector

IA

110 TOYOTA TACOMA (EM01D0U)

W

W

W

W

R–B

R–B

R–B

R–B

(IG) ∗ 1 : w/ Daytime Running Light ∗ 2 : 1GR–FE ∗ 3 : 2TR–FE

(BAT)

10A IG1

15A TRN–HAZ

2

(∗1)

(∗1)

P

T11 Turn Signal Flasher

2

B–Y

1 1L

1 IG

B

HAZ

W

(∗1)

(∗1)

(∗1)

6

10

B–Y

TFR 2

R–Y

TFL 4

R–B

Y

(∗1)

LG

7

(∗1)

EL

8

(∗1)

W–B

(∗1)

LG–R

ER

E 9

(∗1)

DRL 12

4 1L

20 1I

18 1J

8 1J

7 1B

5 1B

11 1J

4 1B

B–Y

(∗1)

(∗1)

(∗1)

(∗1)

R–W

8 1L

R–Y

1 1M

R–B

11 1M

Y

5 1L

LG

6 1L

(∗1)

10 1M

(∗1)

2

9 3

2

B1

Hazard SW

3

H7 Hazard Warning Signal SW Assembly

F4 Front Turn Signal Lamp (RH)

(∗1)

F3 Front Turn Signal Lamp (LH)

LG–B

E

(∗1)

W–B

7

(∗1)

W–B

(∗1)

W–B

35 2A

33 2A

38 2A

W–B

W–B

W–B(∗1) LG(∗1) Y(∗1)

W–B W–B

W–B W–B

W–B

EB

W–B

W–B

W–B

EA

1

J13 Junction Connector IE

111 TOYOTA TACOMA (EM01D0U)

(USA)

19 2A

3 2A

P

2 R–B

1 2A

20 IA1

3 12 B 32 A

(USA)

2 A

W–B

W–B

112

TOYOTA TACOMA (EM01D0U) (USA)

(USA)

(USA)

2

R–B

2

(USA)

2

P

2

10A HEAD (LO RH)

1

(USA)

3

10A HEAD (HI RH)

1

Head

1 2

High Beam

C 9(A), C10(B) Combination Meter

2 10A HEAD (LO LH)

10A HEAD (HI LH)

2

R–B

2

R–W

2

W–B

W–B

R–Y

P

1

H2 Headlamp (RH)

2 2A

P 2

W–B

W–B

H1 Headlamp (LH)

P

W

R–B

W

R–B

Headlight W

W

R–B

R–B

2

1

2 2

22 2A

(USA)

R–B

20 2A

R–B

1 35 IA1

System Outline (w/ daytime running light) ∗ This system is designed to automatically activate the turn signal lights during the daytime to keep the car highly visible to other vehicles. This system is controlled by the body ECU. This system makes use of the turn signal lights as daytime running lights. For this reason, when the turn signal lights are operated, the daytime running lights function is interrupted momentarily, which, however, will be brought back into operation as soon as the interposed operation is over. ∗ This system is enabled when the conditions given below are met. A) Ignition switch ON condition B) Turn signal lamp switch OFF condition C) Hazard lamp switch OFF condition D) Light control switch OFF condition E) Parking brake switch OFF condition (Parking brake out of operating condition)** **: This system does not become active when the parking brake switch is ON. However, once the OFF signal of the parking brake switch is input into the body ECU, this system will become active thereafter, regardless of whether the parking brake switch is ON or OFF. : Parts Location Code

See Page

B5

A

44

C9

A

44

C10

B

44

C11

44 40 (1GR–FE)

F3

42 (2TR–FE)

F4

40 (1GR–FE)

Code F4 G2 H1 H2

See Page

Code

42 (2TR–FE)

See Page

H7

40 (1GR–FE)

45

J1

45

42 (2TR–FE)

J4

A

45

41 (1GR–FE)

J5

B

45

43 (2TR–FE)

J13

45

41 (1GR–FE)

P6

45

43 (2TR–FE)

T11

45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1B 1C

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

29

Relay Wire and Driver Side J/B (Lower Finish Panel)

1H 1I 1J 1L 1M 2A

24

Engine Room J/B (Engine Compartment Left)

2C

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

DB

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

DC DD

: Connector Joining Wire Harness and Wire Harness Code EB1

See Page 52 (1GR–FE) 53 (2TR–FE)

Joining Wire Harness and Wire Harness (Connector Location) Engine No.2 Wire and Engine Room Main Wire (Inside of Engine Room R/B)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

113 TOYOTA TACOMA (EM01D0U)

Headlight : Ground Points Code EA EB

See Page 52 (1GR–FE) 53 (2TR–FE) 52 (1GR–FE) 53 (2TR–FE)

Ground Points Location Front Right Fender Front Left Fender

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

114 TOYOTA TACOMA (EM01D0U)

Memo

115 TOYOTA TACOMA (EM01D0U)

Front Fog Light (BAT)

15A FR FOG

2

G

R

R W

R

R

2

2

1

1

3

2

2

5

2

2

R–B

Y–B

FR FOG Relay

5

2 1 2C

2

4

DIM Relay 5

2

2

3

2 2

R–B

1

HEAD Relay

3

2

W

2

2

2

1 21 2A 10A HEAD (LO RH) 22 2A

24 2A

23 2A

LG

LG 25 2A

LG

L 26 IA1

L

R–B

B

2

R–B

2

F2 Fog Lamp (Front RH)

F1 Fog Lamp (Front LH)

Battery

F16 Fog Lamp SW

3 1

2

1

2

W–B

W–B

W–B

4

7 A

5 B

W–B

W–B

W–B

33 2A

W–B

J 4(A), J 5(B) Junction Connector

36 2A

W–B

IC

116 TOYOTA TACOMA (EM01D0U)

EA

EB

: Parts Location Code

See Page

F1

40 (1GR–FE)

F2

40 (1GR–FE)

Code

See Page

F16 J4

44 A

Code J5

See Page B

45

45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

2A

24

Engine Room J/B (Engine Compartment Left)

2C

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

: Connector Joining Wire Harness and Wire Harness Code IA1

See Page 54

Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

: Ground Points Code

See Page

Ground Points Location

EA

52 (1GR–FE)

Front Right Fender

EB

52 (1GR–FE)

Front Left Fender

IC

54

Instrument Panel Brace RH

117 TOYOTA TACOMA (EM01D0U)

6 A

IC

EB

EA

5 B

W–B

BD

118

TOYOTA TACOMA (EM01D0U) 2

3 BE2

(∗1)

W–B

G

2

1

3 2

1 BE2

L3 License Plate Lamp (RH)

(∗1)

G (∗2)

G

(∗1)

G

(∗1)

G

G (Canada)

2

(∗1)

1

W–B

2

L2 License Plate Lamp (LH)

G (∗1)

G (∗2) 4 BE2

(∗2)

W–B

(∗1)

W–B

3

(∗1)

W–B

2

Tail

G

(∗2)

Head

G

TAIL

R6 Rear Combination Lamp (RH)

2

G

2 1C

W–B

33 2A

G

L 2

W–B

37 2A

P3 Parking Lamp (RH)

6 1A

Tail

T

W–B

Tail H

W–B

EL 11 1C

R5 Rear Combination Lamp (LH)

18 1

W–B

C11 Combination SW G

G

19

W–B

OFF

W–B

8

P2 Parking Lamp (LH)

G

B 5(A) Body ECU 2

W–B

12

W–B

1

W–B

W–B

J 4(A), J 5(B) Junction Connector

Light Control SW

Taillight ∗ 1 : w/ Trailer Towing ∗ 2 : w/o Trailer Towing

(BAT)

50A J/B

(Canada)

G

7 1J

3 TAIL Relay

5

10A TAIL

TRLY 10 1D

13 A G

IJ1

1 2 BE2

Tail

G (Canada)

13 A

J 4(A) Junction Connector

12 A

(Canada)

W–B

C9 Combination Meter

G (Canada)

(Canada) G

40

2

2

J1 Junction Connector

IA

119

TOYOTA TACOMA (EM01D0U)

Taillight : Parts Location Code B5

See Page A

Code

44

L2

See Page

C9

44

C11

44

J1

45

49 (*3) 41 (1GR–FE)

J4

A

45

J5

B

45

P2 P3

48 (*2)

R5

48 (*2)

2

See Page 24

47 (*1) R6

43 (2TR–FE)

1A

43 (2TR–FE)

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1D

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

1J

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

1C

: Connector Joining Wire Harness and Wire Harness Code IJ1 BE2

See Page 55

Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

56 (*1)

Frame No.3 Wire and Frame Wire (Behind the Trailer Socket)

57 (*2)

: Ground Points Code EA EB

See Page 52 (1GR–FE) 53 (2TR–FE) 52 (1GR–FE) 53 (2TR–FE)

Ground Points Location Front Right Fender Front Left Fender

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

56 (*1) BD

57 (*2)

Near the Rear Differential

58 (*3) * 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

48 (*2) 49 (*3)

41 (1GR–FE)

: Junction Block and Wire Harness Connector Code

48 (*2) 49 (*3)

: Relay Blocks Code

See Page 47 (*1)

46 (*1) L3

46 (*1)

L2

Code

49 (*3)

* 5 : Bench Seat

120 TOYOTA TACOMA (EM01D0U)

Memo

121 TOYOTA TACOMA (EM01D0U)

Illumination (IG)

(BAT) 10A IG1 NO. 2

G ∗ 1 : Separate Type Amplifier ∗ 2 : Built–in Type Amplifier ∗ 3 : w/ Downhill Assist Control

50A J/B

G

2

W–R

L

7 1J

6 1A

3

6 DA

10A TAIL

TAIL Relay

LG

2

5

19

19 1J

B 5(A) Body ECU

W–R

G

TRLY

LH

1

4 EAU

Steering Pad SW

13 DC

12 IL+2

S8 Spiral Cable

LG

G

2

14 1C

TAIL

J2 Junction Connector

13 A

13

10

7

11

2

IC

G

(∗3)

G

G 2

13

G–W

9

(∗3)

G–W

12

2

BR–W

W–B

W–B

J3 Junction Connector

J1 Junction Connector

W–B

J 4(A), J 5(B) Junction Connector

1

G–W W–B

12

5 B

2

1

ILL– 6

6 A

(w/ Auto LSD)

2

1

G–W

– 3

G–W

E 5

BR–W

Head

W–B

Tail

2

1

D5 Diff. Lock SW

OFF

1

(w/ Auto LSD)

T

T

D8 Downhill Assist Control SW

4

IG

A27 Auto LSD SW

G

1

F16 Fog Lamp SW

H

18

R4 Rheostat

Light Control SW

EL

LG

C11 Combination SW

IJ1

G

8

G

G

1

6

1 2

IA

122 TOYOTA TACOMA (EM01D0U)

W–B

2

W–B

BR–W

J3 Junction Connector

4

5

8

4 B 12 A 5 C

TOYOTA TACOMA (EM01D0U) 2 A (∗1) 10 B (∗2)

SWG ILL+

ILL–

GND 20 A (∗1) 7 B (∗2)

H7 Hazard Warning Signal SW Assembly G

G

W–R

G

G

J 4(A), J 5(B) Junction Connector

21 B

G–W

20 6 D 6 D

BR

Illumination

R 1(A), (B), R 2(C), R 3(D) Radio Receiver Assembly

C9 Combination Meter

G

4

BR–W

ILL– G

G

W–R

BR–W

8

G–W

ILL+

A18 A/T Shift Lever Illumination

3

J 4(A), J 5(B) Junction Connector

G–W

8

G–W

A16 A/C Control Assembly

G

G

G

G

G G

G

G

13 A 15 A 14 A 12 A

20 B

W–R

40

11 ILL+

10 ILL–

9 A

3 B

BR–W

W–B

ID

123

Illumination : Parts Location Code

See Page

Code

See Page

Code

44

D8

44

A18

44

F16

44

A27

44

H7

45

44

J1

45

C9

44

J2

45

C11

44

J3

45

R4

45

D5

44

45

S8

45

B5

A

J4

A

J5

See Page

A16

B

45

A

45

B

45

R2

C

45

R3

D

45

R1

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1A

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1J

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

DA

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

DC

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

1C

: Connector Joining Wire Harness and Wire Harness Code IJ1

See Page 55

Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

: Ground Points Code IA IC ID

See Page

Ground Points Location

54

Left Kick Panel

54

Instrument Panel Brace RH

124 TOYOTA TACOMA (EM01D0U)

Memo

125 TOYOTA TACOMA (EM01D0U)

W–B

3

3

W–B

W–B

5

Back–Up

R6 Rear Combination Lamp (RH)

Back–Up

R5 Rear Combination Lamp (LH)

R–W

R–W

R–W

R–W

R–W

P 1(A) Park/Neutral Position SW B 1(B) Back–Up Lamp SW Y

P

Back–Up Light (IG)

10A IG1

13 1H

12 IH1

2 A (A/T) 2 B (M/T)

1 A (A/T) 1 B (M/T)

6 IH1

1 ID2

5

BD

126

TOYOTA TACOMA (EM01D0U)

: Parts Location Code B1 P1

See Page

Code

40 (1GR–FE)

B

42 (2TR–FE)

R5

41 (1GR–FE)

A

See Page

Code

47 (*1)

R6

48 (*2)

See Page 48 (*2) 49 (*3)

49 (*3)

43 (2TR–FE)

R6

47 (*1)

: Junction Block and Wire Harness Connector Code 1H

See Page 29

Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

ID2

54

Frame Wire and Instrument Panel Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

: Ground Points Code

See Page

Ground Points Location

56 (*1) BD

57 (*2)

Near the Rear Differential

58 (*3) * 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

127 TOYOTA TACOMA (EM01D0U)

W–B

W–B

15 1C

(∗1) L

G–W

(∗1)

L 13 1D

4

3 5 1D 4 1F

L

L

4

(∗2)

3

BD

128

TOYOTA TACOMA (EM01D0U)

C15 Center Stop Lamp

STPO (∗1)

L

3

Stop

L

4

S10 Stop Lamp SW

5

(∗2)

L

2

(∗1)

(∗1)

G–W

G–W

LG (∗1)

14 1C

R6 Rear Combination Lamp (RH)

L

L

2

(∗1)

2

L

LG (∗1)

10A IG1 NO. 2

Stop

STP

1

(∗1)

STOP LP CTRL Relay

(IG)

W–B

W–B

7 A 14 B (∗2)

(∗1)

G–B 2

R5 Rear Combination Lamp (LH)

S 1(A), (B) Skid Control ECU with Actuator

Stop Light ∗ 1 : w/ VSC ∗ 2 : w/o VSC

(BAT)

10A STOP

2 2

13 DC

12 DC

2

2

1

2

16 A (∗1)

2 1B

STP2 45 A (∗1)

1

2

BA

: Parts Location Code

See Page

Code

46 (*1)

See Page

R5

48 (*2)

C15

S1

47 (*1)

49 (*3)

48 (*2)

S1

B

48 (*2)

R6 A

See Page A

47 (*1)

49 (*3) R5

Code

49 (*3)

S10

43 (2TR–FE) 41 (1GR–FE) 43 (2TR–FE) 45

41 (1GR–FE)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1B

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1D

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

1F

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

DC

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

1C

: Ground Points Code

See Page

Ground Points Location

56 (*1) BA

57 (*2)

Floor Seat Cross Member LH

58 (*3) 56 (*1) BD

57 (*2)

Near the Rear Differential

58 (*3) * 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

129 TOYOTA TACOMA (EM01D0U)

1 2

W–B

2

BE

130

TOYOTA TACOMA (EM01D0U) 1

1

(∗2)

D16 Door Courtesy SW (Rear RH Lower Side) P–B

7 BF1

(∗2)

P–B

2

W–B

(∗2)

BF

(∗2)

W–B

IL1

(∗2)

(∗2)

9

P–B

8 1I

(∗2)

P–B

7 1F

D17 Door Courtesy SW (Rear RH Upper Side) P–B

IL1

(∗1, ∗2)

RCTY

22

6 1F

(∗1)

PCTY

20

(∗2)

D18 Door Courtesy SW (Rear RH)

DCTY

26

W–B

1

(∗2)

4

1 2 3 4

(∗2)

1

D13 Door Courtesy SW (Rear LH Lower Side) P–B

(∗2)

P–B

(BAT) ∗ ∗ ∗ ∗

W–B

(∗2)

2

P–B

P–B

1

(∗2)

2 BG1

(∗1)

P–B

(∗2)

R–B

R–B

IG

D14 Door Courtesy SW (Rear LH Upper Side) P–B

R–B

5

(∗2)

1

(∗2)

R–B

2 BF1

(∗1, ∗3)

(∗2)

G–Y

5

D15 Door Courtesy SW (Rear LH)

(∗2)

G–Y

G–Y

10A IG1 NO. 2

W–B

D12 Door Courtesy SW (Front Passenger' s Side)

1

(∗1, ∗3)

(IG)

(∗2)

W–B

D11 Door Courtesy SW (Driver' s Side)

Interior Light : Double Cab : Access Cab : Regular Cab : w/ Automatic Glare–Resistant EC Mirror

20A DR LCK

B 5(A) Body ECU

ALTB

15 1J 11 1F

6 BF1

7 BG1

(BAT)

(BAT)

7. 5A ECU–B

7. 5A DOME

2

2

B 5(A) Body ECU

6

13 1K

2 1E

7 1E

W

4 1C

W

16 1C

R

W

2

R

2

1

1

1

ECUB

7

ACTY 4 A

(∗4)

ILE

1

2

3

(∗4)

W–B

L W–B

W–B

W–B

4

BA

W–B

2

G–W

BD

M3 Map Lamp

18

OFF ON

DOOR

R7 Room Lamp (Center)

II1

Door

1

C9 Combination Meter

W–B

9 1E

L

W–B

12 1E 11 1E

(∗4)

18 1H

W–B

10 1F

W–B

8 1D

W–B

G–W

GND

J1 Junction Connector IA

131 TOYOTA TACOMA (EM01D0U)

Interior Light : Parts Location Code B5

See Page A

C9 D11

D12

Code

See Page

44

D12

49 (*3)

44

D13

48 (*2)

46 (*1)

D14

48 (*2)

48 (*2)

D15

46 (*1)

49 (*3)

D16

48 (*2)

46 (*1)

D17

48 (*2)

48 (*2)

D18

46 (*1)

Code J1 M3

2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

See Page

Junction Block and Wire Harness (Connector Location)

1C

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1D

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

1E

28

Roof Wire and Driver Side J/B (Lower Finish Panel)

1F

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

1H 1I 1J 1K

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

IL1

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BF1

57 (*2)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)

BG1

57 (*2)

Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)

: Ground Points Code IA

See Page 54

Ground Points Location Left Kick Panel

56 (*1) BA

57 (*2)

Floor Seat Cross Member LH

58 (*3) 56 (*1) BD

57 (*2)

Near the Rear Differential

58 (*3) BE

57 (*2)

Inside of the Access Door LH

BF

57 (*2)

Inside of the Access Door RH

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

48 (*2) 48 (*2) 49 (*3)

: Junction Block and Wire Harness Connector Code

46 (*1) 47 (*1)

R7

: Relay Blocks Code

See Page 45

* 5 : Bench Seat

132 TOYOTA TACOMA (EM01D0U)

Memo

133 TOYOTA TACOMA (EM01D0U)

Turn Signal and Hazard Warning Light (IG)

(BAT) # : Short Pin 10A IG1

15A TRN–HAZ

2 2

B–Y

1 1L

P

4 1B

B–Y

4 1L

1

B

IG

TFR 2

L–Y 2 1L

11 1I

11 1D

4 1D

Turn

1

3

3

W–B

2

1

R6 Rear Combination Lamp (RH)

2

L–B

27

Turn

L–Y

28 3

L–Y

L–B 3 1L

Turn RH

2

2 1M

L–B

F4 Front Turn Signal Lamp (RH)

3

W–B

F3 Front Turn Signal Lamp (LH)

12 1I

R–Y

5 1B

R–B

7 1B

1 1M

Turn LH

12 1M

LR 3

W–B

# (∗2)

R5 Rear Combination Lamp (LH)

# (∗2)

C9 Combination Meter

11 1M

LL 5

(∗1)

(∗1)

R–Y

TFL 4

R–B

T11 Turn Signal Flasher

6

W–B

W–B

35 2A

W–B

33 2A

W–B

W–B

W–B

W–B

EB

EA

BD

134 TOYOTA TACOMA (EM01D0U)

∗ 1 : w/ Daytime Running Light ∗ 2 : w/o Daytime Running Light

T11 Turn Signal Flasher

E

EL

ER

HAZ

DRL

10

5 1L

6 1L

10 1M

8 1L

18 1H

8 1J

18 1J

20 1I

11 1J

LG–B

R–W

13

5 A

EL

TR

LH

B 5(A) Body ECU

N RH

W

(∗1)

DRL

9 B1

Hazard SW

Turn SW

C11 Combination SW

W–B

TL

H7 Hazard Warning Signal SW Assembly

15

(∗1)

LG–R

7 1L

Y

LG

12

LG

8

Y

7

W–B

9

E 7

J1 Junction Connector 1

4 W–B

2

IA

W–B

6 A

5 B

W–B

J 4(A), J 5(B) Junction Connector

W–B

12

1

J13 Junction Connector

W–B

IC

IE

135 TOYOTA TACOMA (EM01D0U)

Turn Signal and Hazard Warning Light : Parts Location Code B5

See Page A

Code

44

See Page

H7

C9

44

C11

44

J4

A

45

40 (1GR–FE)

J5

B

45

F3

J1

42 (2TR–FE)

J13

40 (1GR–FE)

F4

R5

42 (2TR–FE)

Code

45

R5

45

47 (*1) R6

2

See Page 24

T11

47 (*1) 48 (*2)

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1B

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1D

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

29

Relay Wire and Driver Side J/B (Lower Finish Panel)

24

Engine Room J/B (Engine Compartment Left)

1H 1I 1J 1L 1M 2A

: Ground Points Code EA EB

See Page 52 (1GR–FE) 53 (2TR–FE) 52 (1GR–FE) 53 (2TR–FE)

Ground Points Location Front Right Fender Front Left Fender

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

56 (*1) BD

57 (*2)

Near the Rear Differential

58 (*3) * 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

48 (*2) 49 (*3)

45

: Relay Blocks Code

See Page 49 (*3)

* 5 : Bench Seat

136 TOYOTA TACOMA (EM01D0U)

45

Memo

137 TOYOTA TACOMA (EM01D0U)

Light Auto Turn Off System (BAT)

L

(IG) 10A IG1 NO. 2

6 1A

7. 5A ECU–B

2

3

2

5

2

W

W

R

TAIL Relay

1

16 1C

29 IA1

19

14 A

5

TRLY

6

IG

ECUB

L

W

HRLY

B 5(A) Body ECU 2

2

G

TAIL 13 A

P

HEAD 17 A

2 50A J/B 1

5

DCTY

1

26

18 1H

7 1F

1

HEAD Relay

3

GND

2 9

IJ1

8

IJ1

G–Y T

G–Y

Light Control SW

B

C11 Combination SW

1 2C

EL

OFF

(∗3, ∗5)

18 H

W–B

20

1

(∗4)

G

P

140A ALT (∗1) 120A ALT (∗2)

2

2 BF1

Tail Head

D11 Door Courtesy SW (Driver' s Side)

6 A

5 B

W–B

J 4(A), J 5(B) Junction Connector

W–B

Battery

4

J1 Junction Connector IC

IA

138 TOYOTA TACOMA (EM01D0U)

1

(∗4)

G–Y

12

(∗4)

2

BE

TOYOTA TACOMA (EM01D0U)

2

1

1

(∗4)

D16 Door Courtesy SW (Rear RH Lower Side) P–B

7 BF1

(∗4)

P–B

1

(∗4)

(∗4)

P–B

9

D17 Door Courtesy SW (Rear RH Upper Side) P–B

IL1

(∗3)

P–B

P–B (∗3, ∗4)

RCTY

22

W–B

D18 Door Courtesy SW (Rear RH)

(∗4)

(∗4)

P–B

PCTY

20

(∗4)

1

D13 Door Courtesy SW (Rear LH Lower Side) P–B

(∗3)

P–B

(∗4)

R–B

R–B

6 1F 1 2 3 4 5

W–B

1

(∗4)

(∗4)

2

W–B

P–B

(∗4)

1

D14 Door Courtesy SW (Rear LH Upper Side) P–B

2 BG1

(∗4)

D15 Door Courtesy SW (Rear LH)

1

(∗4)

R–B

R–B

5

(∗3, ∗5)

8 1I

W–B

D12 Door Courtesy SW (Front Passenger' s Side)

∗ ∗ ∗ ∗ ∗ : w/ Trailer Towing : w/o Trailer Towing : Double Cab : Access Cab : Regular Cab

B 5(A) Body ECU

15 1J

IL1

7 BG1

2

BF

139

Light Auto Turn Off System System Outline When all doors are closed after opening some or all of them after the Ignition SW is turned from ON to OFF with the head and tail lamps ON, these lamps will remain ON for 30 seconds after the doors are closed and then go OUT automatically. Pressing the lock SW on a wireless controller twice in succession turns OFF the lamps instantly. : Parts Location Code B5

See Page A

Code

44

C11

D12

44

D11 D12

See Page

Code D17

48 (*2) 46 (*1)

49 (*3)

D18

46 (*1)

D13

48 (*2)

J1

48 (*2)

D14

48 (*2)

J4

A

45

49 (*3)

D15

46 (*1)

J5

B

45

46 (*1)

D16

48 (*2)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1A 1C 1F

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

1H 1I 1J 2C

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

IL1

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BF1

57 (*2)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)

BG1

57 (*2)

Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)

: Ground Points Code

See Page

Ground Points Location

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

BE

57 (*2)

Inside of the Access Door LH

BF

57 (*2)

Inside of the Access Door RH

* 1 : Double Cab

See Page

48 (*2)

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

140 TOYOTA TACOMA (EM01D0U)

45

Memo

141 TOYOTA TACOMA (EM01D0U)

Key Reminder (IG)

∗ 1 : Double Cab ∗ 2 : Access Cab ∗ 3 : Regular Cab

(BAT)

7. 5A GAUGE

7. 5A ECU–B

2 3 1J

R

2

V

16 1C

R

13 1K

1

C9 Combination Meter

21

7 1F

10 1K

G–B

G–Y

(∗1, ∗3)

U1 Unlock Warning SW

(∗2)

G–Y

2 BF1

D11 Door Courtesy SW (Driver' s Side)

W–B

5 1J

2

(∗2)

12 1J

G–Y

G–B

11

G–Y

12

1

1

W–B

W–B

W–B

W–B

2

2

J1 Junction Connector

1

IC

IA

142 TOYOTA TACOMA (EM01D0U)

System Outline Key Reminder System With the ignition key inserted in the key cylinder (Unlock warning SW on), the ignition SW still off and driver’s door open (Door courtesy SW on), when a signal is input to TERMINAL 12 of the combination meter, the combination meter operates, current flows from TERMINAL 1 of the combination meter to TERMINAL 2 GROUND and key reminder buzzer sounds. : Parts Location Code

See Page

C9

44

D11

46 (*1)

Code D11

See Page

Code

See Page

48 (*2)

J1

45

49 (*3)

U1

45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1C

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1F

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

1J 1K

: Connector Joining Wire Harness and Wire Harness Code BF1

See Page 57 (*2)

Joining Wire Harness and Wire Harness (Connector Location) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)

: Ground Points Code

See Page

Ground Points Location

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

143 TOYOTA TACOMA (EM01D0U)

ECT and A/T Indicator for 1GR–FE (BAT)

(IG)

20A EFI

(IG)

(BAT) 10A IG1 NO. 2

15A IGN

10A STOP

2

2 14 1C

2

G–W

(∗1)

G–W

LG

(∗1)

O

L

∗ 1 : w/ VSC ∗ 2 : w/o VSC

LG

15 1I

(∗1)

2

13 DC

2

L

L

2

(∗1)

2

L

2

6 1C

5 DD

2 1B

3 DB

1

3

G–B

G–W

2

L

O

1

L

5

2

G–W

2

L

L

(∗2)

(∗1)

L

G–W

1 IA1

S10 Stop Lamp SW

4

LG (∗1)

10 IA1

5

L

L

1

(∗1)

12 DC

2

(∗1)

STOP LP CTRL Relay

2

8 E

3 E

9 E

EFI Relay

MREL

BATT

15 E STP

IGSW

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module THW

E2

VTA1

21 A

28 A

2

20 A

VC 23 A

M+ 5 A

M– 4 A

GE01 17 A

IF1

3

1

L

L

G–B

E2 Engine Coolant Temp. Sensor

BR

2

IF1

L

BR

2 1H

W–B

B

3 1H

(2WD)

B

W–B

B

1

11 2A 30 2A

VTA2 19 A

P

SEL 26 D

Y–B

2

+B2 2 E

(Shielded)

+B 1 E

G–W

2

L

3

5

5

4

2

1

VC

VTA2

M+

M–

B

BR

6 VTA

BR

W–B

(2WD)

10 IF1

W–B

W–B

BR

E2 3

9

IF1

BR

W–B

15 B

BR

J 5(B) Junction Connector

M 14 B

W–B

BR

IF1

6 1B

W–B

B

9 2A 33 2A

4

T1 Throttle Body Assembly

IF1 W–B BR BR

EA

EB

IC

144 TOYOTA TACOMA (EM01D0U)

(BAT)

(ST)

10A ETCS

7. 5A STA

2

2 2

V

2

V

T5 Transmission Revolution Sensor (Electronically Controlled Transmission)

6 2A

P1 Park/Neutral Position SW

V

2

1

V 18 PB

9 PB

L

P N 5

B–Y

1

B

3 2B

LG

T6 Transmission Revolution Sensor (Turbine)

4

2

4 2B

6 IA1

11 PA

R

L–R

Y–R

W–R

LG

V

B–Y

5 2B

26 B

34 B

27 B

35 B

7 E

8 B

11 C

SP2–

SP2+

NT–

+BM

NT+

NSW

STA

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module

L

OT2– 1 A

G 7 A

SL2+

SL2–

SLU+

SLU–

S1

S2

SR

SB

L–W 15 A

SL1–

B

8 A

SL1+

W

5 A

SR 9 B

BR

W–G

S2 10 B

LG

Y–B

G–R

S1 11 B

LG

13 A

SLU– 14 B

V

3 A

SLU+ 15 B

Y

11 A

SL2– 16 B

L

4 A

SL2+ 17 B

W–L

G–W 12 A

SL1– 18 B

P–L

SL1+ 19 B

R

R–B

G–B

SLT–

GR

6 A

SLT+

OT– 2 A

14 A

SLT– 12 B

G

9 A

SLT+ 13 B

OT2+

O

O

GR

Y–B 10 A OT+

THO2 32 B

L

THO1 24 B

E 1(A) Electronically Controlled Transmission Solenoid

BR BR

145 TOYOTA TACOMA (EM01D0U)

ECT and A/T Indicator for 1GR–FE

A19 Accelerator Position Sensor

R–W

VPA2

2

R

R–Y

4

EPA2

VCP2

3

B

1

GR–B

6

LG–B

5

VCPA

Y

L–W

VPA

R–B

EPA

L–B 13 IA1

12 IA1

11 IA1

7 IA1

8 IA1

R–Y

9 IA1

27 E

VPA2

G–Y

L–W

19 E

EPA2

R–Y

GR–B

21 E

VCPA

L–B

R–B

26 E

VPA

Y

R

18 E

EPA

B

R–Y

20 E

R–W

LG–B

G–Y

11 D

20 D

19 D

21 D

10 D

9 D

R

4

3

D

2

L

VCP2

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module TC

9 DB

CANH 33 D

2 DA

J 9(D), J10(E), J11(F) Junction Connector

W–B

W–B

W–B

W–B

W–B

BR

P–B

23 E

EOM

CANL

1 E

2 E

SPD

35 D

34 D

8 D

ST–Plug

OILW 29 D

P

ME01 3 B

12 PC 1 D

2 D

1 F

14

J14 Junction Connector

6 CANH

CANL

2

II1

2 PD

13

W–B

V–W

W–B

TC

L–W

13

Y–B

P–B

8

P

E05 6 B

V–W

E04 7 B

W–B

E03 4 B

W

E02 6 A

B

E01 7 A

W–B

E1 1 C

D4 Data Link Connector 3

P

J13 Junction Connector

2 1

EE

EF

IE

146 TOYOTA TACOMA (EM01D0U)

V–W

(IG)

(BAT)

7. 5A GAUGE

7. 5A ECU–B

2 2

V

R

3 1J

R–W

B

B

Y

Y

L–B

L–B

R–Y

R–Y

G–Y

G–Y

R

R–Y

R–W

36 IA1

R–Y

16 1C

12 A (w/ VSC) 18 B (w/o VSC)

S 1(A), (B) Skid Control ECU with Actuator

13 1K

R–Y

R

21 A

6 A

1 A

39 A

P

Speed Control 19 A

V–W

A/T OIL TEMP

C 9(A), C10(B) Combination Meter

B

Speed Sensor (Rear)

RR– 19 A (w/ VSC) 45 B (w/o VSC)

O

BR

RR+ 5 A 44 B

Y

RL– 6 A 16 B

P

RL+ 20 A 15 B

Speed Sensor (Front LH, RH)

P

FR– 17 A 39 B

L

FR+ 3 A 40 B

R

FL– 4 A 9 B

G

FL+ 18 A 10 B

V

SP1

V–W

147 TOYOTA TACOMA (EM01D0U)

ECT and A/T Indicator for 1GR–FE (IG)

P

10A IG1

12 IH1 13 1H

Y

P

P1 Park/Neutral Position SW

2 RB

DL

NL

RL

PL

3

7

9

1

6

G–B

L–W

Y

L–B

R–W

R–W

2L

8

R–Y

LL

B Y L–B

L–B

4

10

9

2

ATL

NSSL

NSSD

ATD

R–W

L–W

R–W

G–B

6 PB

5 PB

4 A

2

C 9(A), C10(B) Combination Meter

R–W

G–B

3 B

2 B

1 B

W

B

1

W

IJ1

6 B

5 B

3

4

4 B D

N

2 A

W–B

L

7 B

8 PC

B

V 8 B

7 PC

3

IJ1

2

1 PC

W

AT4

S7 Shift Lock Control ECU

8 PB

L–W

V

5

17 PC

B

AT2

9 B

3 PC

R–Y

14 PE 15 PE

G–Y

12 PE

B

3 PB 13 PC

Y

G–Y

4 PC

8 B

Y

L–B

Y 1 PB

J 4(A), J 5(B) Junction Connector

7 PB 16 PC

B

15 PC

14 PC

L–B

R–Y

G–Y

R–Y

R–Y

2

J1 Junction Connector IA

148 TOYOTA TACOMA (EM01D0U)

R

P

System Outline Previous automatic transmissions have selected each gear shift using mechanically controlled throttle hydraulic pressure, governor hydraulic pressure and lock–up hydraulic pressure. The electronically controlled transmission, however, electrically controls the line pressure, throttle pressure, lock–up pressure and accumulator pressure etc. through the solenoid valve. The electronically controlled transmission is a system which precisely controls gear shift timing and lock–up timing in response to the vehicle’s driving conditions and the engine condition detected by various sensors. It makes smooth driving possible by shift selection for each gear which is the most appropriate to the driving conditions at that time, and by preventing downing, squat and gear shift shock when starting off. 1. Gear Shift Operation When driving, the engine warm up condition is input as a signal to TERMINAL THW of the engine control module from the engine coolant temp. sensor and the vehicle speed signal from vehicle speed sensor is input to TERMINAL SP2+ of the engine control module. At the same time, the throttle valve opening signal from the throttle position sensor is input to TERMINALS VTA1 and VTA2 of the engine control module as throttle angle signal. Based on these signals, the engine control module selects the best shift position for the driving conditions and sends current to the electronically controlled transmission solenoid. 2. Line Hydraulic Pressure Control The engine control module adjusts the line hydraulic pressure to the optimal level by controlling TERMINAL SLT+ of the module according to the engine torque data. This realizes the smooth gear shifting. 3. High Response Gear Shifting Control The engine control module performs the high response engine torque up control to control the ignition–timing lag as well as opening the electronic throttle when shifting down. By doing this, the gear shifting is performed in a short period of time. Moreover, the engine control module uses the orifice switching control, which optimizes the speed of applying and reducing the hydraulic pressure. And it realizes the fine shifting condition by applying and reducing hydraulic pressure slowly when the gear shifting shock is important and quickly when the high response is required. 4. Clutch Hydraulic Pressure Control The engine control module controls the clutch operation in the optimal timing and with the best hydraulic pressure according to the engine torque data and the number of the clutch revolution 5. Lock–Up and Flexible Lock–Up Control The engine control module carries out the lock–up control by controlling the TERMINAL SLU+ of the module according to the shift position, vehicle speed, throttle opening degree and running conditions. The engine control module also steadily keeps applying the lock–up clutch a delicate slippage to improve the transmission efficiency (Fuel efficiency) of the torque converter. 6. Stop Lamp SW Circuit If the brake pedal is depressed (Stop lamp SW on) when driving in lock–up condition, a signal is input to TERMINAL STP of the engine control module. The engine control module operates and cuts the current to the solenoid to release lock–up. 7. AI–Shift Control The engine control module judges whether the road is downslope or upslope by detecting the throttle opening degree or the vehicle’s speed. Moreover it can expect the winding roads by detecting the turning condition of the vehicle. The engine control module keeps unnecessary shifting up from the fourth gear from operating and carries out the automatic shifting down to the third gear in order to control the vehicle running according to the road conditions. The engine control module also reads the driver’s intention during driving from his (her) accelerating operation and the running conditions of the vehicle. As a result of that, ideal shifting patters for each driver are automatically selected without any switching operations. : Parts Location Code

See Page

A19

E7 E8

C9

A

44

C10

B

44

D4 E1

A E2

Code

44

See Page

Code

D

44

J14

E

44

P1

J1

45

S1

See Page 45 41 (1GR–FE) A

41 (1GR–FE)

B

41 (1GR–FE)

44

J4

A

45

40 (1GR–FE)

J5

B

45

S7

45

40 (1GR–FE)

J9

D

45

S10

45

E4

A

44

J10

E

45

T1

41 (1GR–FE)

E5

B

44

J11

F

45

T5

41 (1GR–FE)

E6

C

44

45

T6

41 (1GR–FE)

J13

149 TOYOTA TACOMA (EM01D0U)

ECT and A/T Indicator for 1GR–FE : Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1B

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

2B

24

Engine Wire and Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1C 1H 1I 1J 1K

DA DB DC DD PA PB PC PD PE

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IF1

55

Engine Wire and Engine Wire (Behind the Glove Box)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

: Ground Points Code

See Page

Ground Points Location

EA

52 (1GR–FE)

Front Right Fender

EB

52 (1GR–FE)

Front Left Fender

EE

52 (1GR–FE)

Rear Side of Right Bank Cylinder Block

EF

52 (1GR–FE)

Rear Side of Left Bank Cylinder Block

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

150 TOYOTA TACOMA (EM01D0U)

Memo

151 TOYOTA TACOMA (EM01D0U)

ECT and A/T Indicator for 2TR–FE (BAT)

(IG)

20A EFI

(IG)

(BAT) 10A IG1 NO. 2

15A IGN

10A STOP

2

2 14 1C

2

G–W

(∗1)

G–W

LG

(∗1)

O

L

∗ 1 : w/ VSC ∗ 2 : w/o VSC

LG

15 1I

(∗1)

2

13 DC 2

1 IA1

S10 Stop Lamp SW

5 DD

2 1B

3 DB

2

L

(∗1)

2

L

6 1C 1

3 2

L

2

(∗1)

2

G–B

G–W

4

LG (∗1)

L

5

(∗1)

L

L

10 IA1

1

STOP LP CTRL Relay

12 DC

2

L

8 D

3 D

9 D

EFI Relay

MREL

BATT

L

L O

1

L

5

2

G–W

2

(∗1)

(∗2)

4 C STP

IGSW

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module THOC

E02 6 A

E2

THW

22 A

32 A

2

2

VTA1

28 A

20 A

VC 18 A

VTA2

M+ 5 A

M– 4 A

GE01 8 A

L

19 A

BR

L

P

(Shielded)

IF1

L

1

G–W

IF1

L

G–B

E2 Engine Coolant Temp. Sensor

BR

W–B

W–B

BR

1

3

1

BR

6 1B

A2 A/T Fluid Temp. Sensor

9 2A 33 2A

B

3 1H

W–B

11 2A 30 2A

B

E01 7 A

Y–B

E1 3 A

2

W–B

B

2

+B 1 D

GR

2

B

3

6

5

4

2

1

VTA

VC

VTA2

M+

M–

BR

J12 Junction Connector

W–B

M 8

5

1

E2

IF1

BR

W–B

W–B

BR

W–B

3

EA

EB

IF1

W–B

BR

W–B

W–B

BR

4

T1 Throttle Body Assembly

EH

152 TOYOTA TACOMA (EM01D0U)

BR

(BAT)

(ST)

10A ETCS

7. 5A STA

2

2 2

V 2

V

4

L

EPA2

VPA2

18 PB

9 PB

4 2B

VCP2

R

R–B

GR–B

L–W

1

R–Y

3

LG–B

2

13 IA1

12 IA1

11 IA1

7 IA1

8 IA1

9 IA1

5 2B

R

R–B

GR–B

L–W

LG

V

11 IH1

20 D

18 D

26 D

21 D

19 D

27 D

7 D

30 D

12 D

2

35 B

27 B

B–Y

R–Y

B–Y

3 PD

LG–B

6 IA1

1

R

VCPA 4

B–Y

VPA 6

V

EPA 5

5

V

LG

N 3 2B

G

P

V2 Vehicle Speed Sensor (Electronically Controlled Transmission)

6 2A

P1 Park/Neutral Position SW

B

A19 Accelerator Position Sensor

EPA

VPA

VCPA

EPA2

VPA2

+BM

VCP2

NSW

SP2+

STA

SP2–

9 DB

CANH 33 C

OT2+

SLT+

SLT–

SLU+

SLU–

S1

S2

P–B

B

8 B

W

4 B

BR

7 B

Y

3 B

G

6 B

O

2 B

O

13 TC

1 E

2 E ST–Plug

1 D

2 D

1 F

6

14

CANH

1

CANL

13

E 1(B) Electronically Controlled Transmission Solenoid

W–B

O

D4 Data Link Connector 3

OT2–

BR

2

J13 Junction Connector

5 B

22 D

W–B

1 B

J 9(D), J10(E), J11(F) Junction Connector

W–G

LG

V

R–B

G–B

Y–B

2 DA

EC

CANL 34 C

J14 Junction Connector

TC 17 C

W–B

S2 8 B

P–B

S1 9 B

W–B

SLU– 10 B

W

SLU+ 11 B

L–W

SLT– 13 B

B

SLT+ 12 B

Y–B

THO1 24 B

L–W

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module

1

IE

153 TOYOTA TACOMA (EM01D0U)

ECT and A/T Indicator for 2TR–FE (IG)

(BAT)

7. 5A GAUGE

7. 5A ECU–B

2 2

V

R

3 1J

R–W Y R–Y

G–Y

11 C

19 C

10 C

21 C

9 C

R

3

2

D

L

G–Y

SPD

36 IA1 16 1C

FL–

RL–

FR–

RR+

20 A 15 B

6 A 16 B

5 A 44 B

B

RL+

FR+

BR

FL+

12 A (w/ VSC) 18 B (w/o VSC)

13 1K

SP1

RR– 19 A (w/ VSC) 45 B (w/o VSC)

R

P 17 A 39 B

R–Y

L 3 A 40 B

V

R 4 A 9 B

R–Y

G 18 A 10 B

Y

2

S 1(A), (B) Skid Control ECU with Actuator

8 C

V–W

ME01 3 B

W–B

E04 7 B

W–B

E03 4 B

W–B

Y

21 A

6 A

1 A

12 PC

O

T6 Transmission Revolution Sensor (Turbine)

NCO– 26 B

L

NCO+ 34 B

R–Y

Speed Sensor (Front LH, RH)

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module

R

L–B

R–Y

Y

R–W

L–B

1

Speed Control 19 A

V–W

Speed Sensor (Rear)

C 9(A), C10(B) Combination Meter

V–W

2 PD

EG

154 TOYOTA TACOMA (EM01D0U)

(IG)

P

10A IG1

12 IH1 13 1H

Y

P

P1 Park/Neutral Position SW

2 RB

DL

NL

RL

PL

3

7

9

1

6

G–B

R–W

L–B

R–Y

R–W

G–W

2L

8

G–Y

LL

Y R–Y L–B

3 PC

11 PE

G–B

5 PC

R–W

R–Y

L–B

13 PC

G–W

15 PE

3 PB 15 PC

R–W

4 PC

7 PB

17 PC

8 PB

6 PB

5 PB

1 PC

7 PC

8 PC

Y

2 PB 16 PC

Y

14 PC

R–Y

L–B

G–Y

G–Y

3 B

2 B

1 B

W

G–B

2

R–W

ATD

9

L–W

NSSD L–B

S7 Shift Lock Control ECU

Y

R–Y

L–B

G–Y

3 AT3

IJ1

W

1

7 B

6 B 2

C 9(A), C10(B) Combination Meter

4 B

3

D

N

R

P

2 A

W–B

L

5 B

2

J1 Junction Connector IA

155 TOYOTA TACOMA (EM01D0U)

ECT and A/T Indicator for 2TR–FE System Outline Previous automatic transaxle have selected each gear shift using mechanically controlled throttle hydraulic pressure, governor hydraulic pressure and lock–up hydraulic pressure. The electronically controlled transmission, however, controls the line pressure and lock–up pressure etc. electrically, through the solenoid valve. The engine control module controls each solenoid valve based on the input signals from each sensor, which makes smooth driving possible by shift selection for each gear that is most appropriate to the driving conditions at that time. 1. Gear Shift Operation During driving, the engine control module selects the shift for each gear which is most appropriate to the driving conditions, based on input signals from the engine coolant temp. sensor to TERMINAL THW of the engine control module, and also the input signals to TERMINAL SPD of the engine control module from the vehicle speed sensor devoted to the electronically controlled transmission. Current is then output to the electronically controlled transmission solenoid. When shifting to 1st speed, the current flows from TERMINAL S1 of the engine control module to TERMINAL (B) 4 of the solenoid to GROUND, and from TERMINAL S2 of the engine control module to TERMINAL 8 of the electronically controlled transmission solenoid to GROUND, and continuity to the No.1 and No.2 solenoid causes the shift. For 2nd speed, the current flows from TERMINAL S1 of the engine control module to TERMINAL (B) 4 of the solenoid to GROUND, and from TERMINAL S2 of the engine control module to TERMINAL (B) 8 of the solenoid to GROUND, and continuity to solenoid No.1 and No.2 causes the shift. For 3rd speed, there is no continuity No.1 solenoid, only to No.2, causing the shift. Shifting into 4th speed (Overdrive) takes place when there is no continuity to both No.1 and No.2 solenoid. 2. Stop Lamp SW Circuit If the brake pedal is depressed (Stop lamp SW on) when driving in lock–up condition, a signal is input to TERMINAL STP of the engine control module, the engine control module operates and continuity to the lock–up solenoid is cut. 3. AI–Shift Control The engine control module judges whether the road is downslope or upslope by detecting the throttle opening degree or the vehicle’s speed. Moreover it can expect the winding roads by detecting the turning condition of the vehicle. The engine control module keeps unnecessary shifting up from the fourth gear from operating and carries out the automatic shifting down to the third gear in order to control the vehicle running according to the road conditions. The engine control module also reads the driver’s intention during driving from his (her) accelerating operation and the running conditions of the vehicle. As a result of that, ideal shifting patters for each driver are automatically selected without any switching operations. : Parts Location Code

See Page

A2 A19

Code

42 (2TR–FE)

E7

44

E8

See Page C

44

D

44

S1

43 (2TR–FE) A

43 (2TR–FE)

B

43 (2TR–FE)

A

44

C10

B

44

J9

D

45

S7

45

44

J10

E

45

S10

45

42 (2TR–FE)

J11

F

45

T1

43 (2TR–FE)

E1

B E2

45

See Page

P1

C9 D4

J1

Code

42 (2TR–FE)

J12

45

T6

43 (2TR–FE)

E4

A

44

J13

45

V2

43 (2TR–FE)

E5

B

44

J14

45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

156 TOYOTA TACOMA (EM01D0U)

: Junction Block and Wire Harness Connector Code 1B

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

2B

24

Engine Wire and Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1C 1H 1I 1J 1K

DA DB DC DD PB PC PD PE

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IF1

55

Engine Wire and Engine Wire (Behind the Glove Box)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

: Ground Points Code

See Page

Ground Points Location

EA

53 (2TR–FE)

Front Right Fender

EB

53 (2TR–FE)

Front Left Fender

53 (2TR–FE)

Rear Side of Cylinder Block

IA

54

Left Kick Panel

IE

54

Right Kick Panel

EG EH

157 TOYOTA TACOMA (EM01D0U)

Cruise Control for 1GR–FE P (BAT)

(IG)

(M/T)

(IG) 10A IG1 NO. 2

10A IG1

20A EFI

9 1J

2 2

14 1C

LG

P

(∗1)

L

∗ 1 : w/ VSC ∗ 2 : w/o VSC

(A/T)

13 1H LG (∗1) 13 DC 12 IH1

14 DC 12 DC

1

C14 Cruise Control Clutch SW

P1 Park/Neutral Position SW

L

(A/T)

Y

LG (M/T)

2

D 7

LG (∗1) L

L

L

L–B

(M/T)

G–W

G–W

L–B

(A/T)

2

5 DD

6 1C

3 DB

2 1B

3 PB 40 IA1

1 IA1

5

L(∗1)

15 PE

L–B

G–W

2

L

16 PC 2

L

10 IA1

L–B

L(∗2)

(M/T)

1

8 E

EFI Relay

MREL

3 E

15 E

21 D

BATT

STP

D

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module 3

2

+B 1 E

SEL

E2

26 D

VTA1

28 A

20 A

VC 23 A

VTA2

M+

19 A

5 A

M– 4 A

GE01 17 A

2

BR

L

P

(Shielded)

IF1

L

3

G–W

IF1

IF1

L

G–B

5 11 2A 30 2A

1

BR

2 1H

(2WD)

B

3 1H

W–B

B

W–B

B

L

2

+B2 2 E

BR 9

IF1

4

6

5

4

2

1

VTA

VC

VTA2

M+

M–

M

IF1

W–B

BR

J5 Junction Connector

15

10 IF1

BR

BR

B

W–B

14

W–B

6 1B

W–B

B

9 2A 33 2A

E2

(2WD)

W–B

W–B

W–B

3

T1 Throttle Body Assembly

BR BR

EA

EB

IC

158 TOYOTA TACOMA (EM01D0U)

P

P

(M/T)

(M/T)

(BAT)

(IG)

(BAT)

15A IGN

10A STOP

2

10A ETCS

2 2 15 1I

O

2 8 1C

3 2

1

4

2

L

(∗1)

L

(∗1)

(∗1)

G–B

LG

3

L

2

O

2

2

V–W

4

G–W

5

(∗2)

2

1

S10 Stop Lamp SW

STOP LP CTRL Relay

2

(∗1)

G–W

LG (∗1)

6 IA1

2 IA1

V–W

O

L(∗2)

LG

L(∗1)

16 E

9 E

ST1–

7 E

IGSW

+BM

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module

L

OT2– 1 A

G 7 A

SL2+

SL2–

SLU+

SLU–

S1

S2

SR

SB

L–W 15 A

SL1–

B

8 A

SL1+

W

5 A

SR 9 B

BR

W–G

S2 10 B

LG

Y–B

G–R

S1 11 B

LG

13 A

SLU– 14 B

V

3 A

SLU+ 15 B

Y

11 A

SL2– 16 B

L

4 A

SL2+ 17 B

W–L

G–W 12 A

SL1– 18 B

P–L

SL1+ 19 B

R

R–B

G–B

SLT–

GR

6 A

SLT+

OT– 2 A

14 A

SLT– 12 B

G

9 A

SLT+ 13 B

OT2+

O

O

GR

Y–B 10 A OT+

THO2 32 B

L

THO1 24 B

E 1(A) Electronically Controlled Transmission Solenoid

BR BR

159 TOYOTA TACOMA (EM01D0U)

Cruise Control for 1GR–FE P

P

(M/T)

(M/T)

D4 Data Link Connector 3 A19 Accelerator Position Sensor

CANH

TC

VPA2

VCP2

1 E

2 E

1 F

20 E

18 E

26 E

21 E

19 E

27 E

23 E

33 D

34 D

EPA

VPA

VCPA

EPA2

VPA2

VCP2

CANH

TC

W–B

W

9 DB

B

9 IA1

P–B

L–W

8 IA1

L–W

GR–B

7 IA1

GR–B

R–B

11 IA1

ST–Plug

R–B

R

12 IA1

2 D

R

13 IA1

1 D

R–Y

2 DA

LG–B

R–Y

1

LG–B

3

L–W

EPA2 2

14

Y–B

VCPA 4

J 9(D), J10(E), J11(F) Junction Connector

VPA 6

P–B

EPA 5

CANL

6

13

CANL

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E) Engine Control Module E02

E03 4 B

E04 7 B

E05 6 B

ME01

EOM

CCS 2 D

3 B

SPD

35 D

8 D

12 PC

2

BR–W

2

1

PI 18 D

V–W

II1

W–B

W–B

W–B

W–B

W–B

W–B

W–B

BR

BR–W

6 A

LG

E01 7 A

W–B

E1 1 C

7

II1

2 PD ECC

CCS Main

2

J14 Junction Connector

8 PF

13

EE

EF

LG

V–W

+ RES

LG

W–B

– SET

V–W

CANCEL

J13 Junction Connector

Cruise Control SW

S8 Spiral Cable

W–B

18 PA

EE

160 TOYOTA TACOMA (EM01D0U)

2

1

IE

W–B

P (M/T)

(IG) 7 PF

(BAT)

7. 5A GAUGE

7. 5A ECU–B

2 4 PA

P 1

R

IG+

V

V1 Vehicle Speed Sensor (Combination Meter)

2

(M/T)

3 1J

SE

SI

2

3 8 IH1

R–Y(M/T)

9 IH1

W(M/T)

R–Y (M/T) W (M/T)

R

R–Y

6

(M/T)

R–Y

R–Y

12 A (w/ VSC) 18 B (w/o VSC)

S 1(A), (B) Skid Control ECU with Actuator

21

(A/T)

36 IA1

(A/T)

13 1K

V

R–Y

(A/T)

16 1C

1

Speed Sensor (Front LH, RH)

19

2

V–W

W–B

Speed Control

(M/T)

3

W

CRUISE 24

LG

RR– 19 A (w/ VSC) 45 B (w/o VSC)

O

B

RR+ 5 A 44 B

BR

RL– 6 A 16 B

Y

RL+ 20 A 15 B

P

FR– 17 A 39 B

L

FR+ 3 A 40 B

R

FL– 4 A 9 B

G

FL+ 18 A 10 B

C9 Combination Meter

SP1

Speed Sensor (Rear)

LG V–W

2

J1 Junction Connector IA

161 TOYOTA TACOMA (EM01D0U)

Cruise Control for 1GR–FE System Outline The cruise control system is a constant vehicle speed controller in which control of the switch on the instrument panel makes it possible to automatically adjust the opening of the engine throttle valve without depressing of the accel pedal. 1. Set Operation When the main SW is turned on, the system starts preparations necessary for the cruise control and turns on the indicator light in the combination meter. 2. Set Speed Control When the – SET SW is operated with the cruise control main SW turned on during travelling, the constant vehicle speed is controlled. 3. Coast Control When the – SET SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve to decelerate the vehicle. Every time the – SET SW is turned on instantaneously, the vehicle speed is decelerated approximately 1.6 km/h. 4. Accel Control When the + RES SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve to accelerate the vehicle. Every time the + RES SW is turned on instantaneously, the vehicle speed is accelerated approximately 1.6 km/h. 5. Resume Control When the vehicle speed is within the low speed limit (Approximately 40 km/h, 25 mph) if the cruise control is cancelled, use of the + RES SW accelerates the vehicle to the speed level used before canceling the cruise control. 6. Manual Cancel Mechanism If any of the following signals is input during cruise control travelling, the cruise control is cancelled. ∗ The stop lamp SW is turned on. ∗ The CANCEL SW is turned on. ∗ The main SW is turned off. ∗ Gear is shifted from D position to other positions than D (A/T). ∗ Clutch pedal depresed (M/T). 7. Auto Cancel Function If any of the following conditions is encountered, the cruise control is automatically cancelled. ∗ The stop lamp SW wiring is faulty or short–circuited. ∗ The vehicle speed signal is faulty. ∗ The electronically controlled throttle malfunctions. ∗ The actual vehicle speed becomes –16 km/h slower than the set speed. ∗ The actual vehicle speed becomes slower than the minimum speed limit. 8. Overdrive Control Function Overdrive is sometimes cut off on gradients during cruise control driving. When end of climbing gradient is determined by throttle opening degree information after overdrive is canceled, control is reset to overdrive condition after overdrive resetting timer operation. Also, when overdrive is cut off during accelerator resuming control, control is reset to overdrive condition when accelerator resuming control is finished. : Parts Location Code

See Page

Code

A19

44

E7 E8

See Page

Code

D

44

J14

E

44

P1

C9

44

C14

44

J1

45

D4

44

J5

45

S1

See Page 45 41 (1GR–FE) A

41 (1GR–FE)

B

41 (1GR–FE)

E1

A

40 (1GR–FE)

J9

D

45

S8

45

E4

A

44

J10

E

45

S10

45

E5

B

44

J11

F

45

T1

41 (1GR–FE)

E6

C

44

45

V1

41 (1GR–FE)

J13

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

162 TOYOTA TACOMA (EM01D0U)

: Junction Block and Wire Harness Connector Code 1B 1C

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

24

Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1H 1I 1J 1K 2A DA DB DC DD PA PB PC PD PE PF

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IF1

55

Engine Wire and Engine Wire (Behind the Glove Box)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

: Ground Points Code

See Page

Ground Points Location

EA

52 (1GR–FE)

Front Right Fender

EB

52 (1GR–FE)

Front Left Fender

EE

52 (1GR–FE)

Rear Side of Right Bank Cylinder Block

EF

52 (1GR–FE)

Rear Side of Left Bank Cylinder Block

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

163 TOYOTA TACOMA (EM01D0U)

Cruise Control for 2TR–FE P (BAT)

(IG)

(M/T)

(IG) 9 1J 10A IG1 NO. 2

10A IG1

20A EFI

2 2 13 1H

LG

(∗1)

P

LG

(A/T)

L

∗ 1 : w/ VSC ∗ 2 : w/o VSC

14 1C

(∗1)

13 DC 12 IH1

12 DC 1

C14 Cruise Control Clutch SW

P1 Park/Neutral Position SW

L

(A/T)

Y

LG (M/T)

14 DC

2

D 7

LG (∗1) L

L

L

L–B

(M/T)

G–W

G–W

L–B

(A/T)

2

5 DD

6 1C

3 DB

2 1B

3 PB 40 IA1

1 IA1

5

L(∗1)

15 PE

L–B

G–W

2

L

16 PC 2

L

10 IA1

L–B

L(∗2)

(M/T)

1

8 D

EFI Relay

MREL

3 D

4 C

21 C

BATT

STP

D

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module 3

2

+B 1 D

E04 7 B

ME01 3 B

E2

VTA1

28 A

20 A

VC 18 A

VTA2

M+

19 A

5 A

M– 4 A

GE01 8 A

2

3 1H 3

L

P

(Shielded)

G–W

L

G–B

BR

W–B

W–B

W–B 11 2A 30 2A

IF1

1

B

W–B

B

L

2

E03 4 B

IF1

L

W–B 6 1B IF1

4

IF1

3

6

5

4

2

1

E2

VTA

VC

VTA2

M+

M–

M

EA

T1 Throttle Body Assembly

W–B

W–B

BR

W–B

BR

B

W–B

B

5

W–B

9 2A 33 2A

EB

BR

EG

164 TOYOTA TACOMA (EM01D0U)

P

P

(M/T)

(M/T)

(BAT)

(IG)

(BAT)

15A IGN

10A STOP

10A ETCS

2

2 2 15 1I

O

2 8 1C

4

3

4

EPA

EPA2

VPA2

VCP2 1

L–W

3

GR–B

2

R–B

4

R

6 IA1

VCPA

6

R–Y

L

(∗1)

L

VPA

5

LG–B

2

(∗1)

(∗1)

G–B

LG

1

A19 Accelerator Position Sensor

V–W

2

3

L

2

2

(∗2)

2

O

5

G–W

2

1

S10 Stop Lamp SW

STOP LP CTRL Relay

2

(∗1)

G–W

LG (∗1)

13 IA1

12 IA1

11 IA1

7 IA1

8 IA1

9 IA1

IGSW

R

R–B

GR–B

L–W

9 D

ST1–

R–Y

O

16 D

L(∗2)

LG–B

V–W

L(∗1)

LG

2 IA1

7 D

20 D

18 D

26 D

21 D

19 D

27 D

EPA

+BM

VPA

VCPA

EPA2

VPA2

VCP2

SLU+

SLU–

W–G

L–W

SLU–

S1

S2

B

6 B

V SLU+

2 B

R–B

8 B

SLT–

1 B

G–B

4 B

SLT+

Y–B

7 B

OT2+

W

6 A

LG

7 A

BR

E1 3 A

Y

S2 8 B

G

S1 9 B

O

10 B

O

11 B

W–B

SLT– 13 B

W–B

SLT+ 12 B

3 B

J12 Junction Connector

THO1 24 B

BR

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module E01

E02

8

O

BR

1

OT2– 5 B

E 1(B) Electronically Controlled Transmission Solenoid

BR

EH

165 TOYOTA TACOMA (EM01D0U)

Cruise Control for 2TR–FE P

P

(M/T)

(M/T)

∗ 1 : w/ VSC ∗ 2 : w/o VSC

D4 Data Link Connector 3

CANH

CANL

L–W 2 D

CANH

17 A 39 B

FL–

V–W

7

SP1

RL+

RL–

RR+

6 A 16 B

5 A 44 B

RR– 19 A (∗1) 45 B (∗2)

O

LG

20 A 15 B

II1

12 PC ECC

FR–

B

18 C

Y 1

W–B

2

FR+

12 A (∗1) 18 B (∗2)

BR

PI

8 C

BR–W BR–W

II1

W–B

2

R–Y

3 A 40 B

(A/T)

4 A 9 B

S 1(A), (B) Skid Control ECU with Actuator SPD

22 D

18 A 10 B FL+

CANL

EC

CCS

P

34 C

L

33 C

36 IA1

R

1 F

W

2 E

B

1 E

E 4(A), E 5(B), E 7(C), E 8(D) Engine Control Module

31 C

(A/T) Speed Sensor (Front LH, RH)

17 C TC

R–Y

ST–Plug

P–B

9 DB

1 D

G

2 DA

14

Y–B

J 9(D), J10(E), J11(F) Junction Connector

P–B

6

W–B

TC 13

Speed Sensor (Rear)

CCS

J14 Junction Connector

1

8 PF Main

2 PD

13

EH

LG

V–W

+ RES

LG

W–B

– SET

V–W

CANCEL

J13 Junction Connector

Cruise Control SW

S8 Spiral Cable

W–B

18 PA

2

1

W–B

IE

166 TOYOTA TACOMA (EM01D0U)

P (BAT)

7. 5A GAUGE

P

(IG)

7. 5A ECU–B

(M/T)

(M/T)

2 3 1J

2

7 PF

P

16 1C

(M/T)

V

R

4 PA

13 1K R–Y

1

21

1

6

SE

24

19

2

LG

V–W

W–B

W

SI 3

(M/T)

C9 Combination Meter

CRUISE

Speed Control

2

9 IH1

R–Y

(M/T)

IG+

(M/T)

R–Y

V1 Vehiele Speed Sensor (Combination Meter)

R–Y

R

V

(A/T)

(A/T)

8 IH1

3

W (M/T)

R–Y (M/T)

LG

J1 Junction Connector

W–B

V–W

2

IA

167 TOYOTA TACOMA (EM01D0U)

Cruise Control for 2TR–FE System Outline The cruise control system is a constant vehicle speed controller in which control of the switch on the instrument panel makes it possible to automatically adjust the opening of the engine throttle valve without depressing of the accel pedal. 1. Set Operation When the main SW is turned on, the system starts preparations necessary for the cruise control and turns on the indicator light in the combination meter. 2. Set Speed Control When the – SET SW is operated with the cruise control main SW turned on during travelling, the constant vehicle speed is controlled. 3. Coast Control When the – SET SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve to decelerate the vehicle. Every time the – SET SW is turned on instantaneously, the vehicle speed is decelerated approximately 1.6 km/h. 4. Accel Control When the + RES SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve to accelerate the vehicle. Every time the + RES SW is turned on instantaneously, the vehicle speed is accelerated approximately 1.6 km/h. 5. Resume Control When the vehicle speed is within the low speed limit (Approximately 40 km/h, 25 mph) if the cruise control is cancelled, use of the + RES SW accelerates the vehicle to the speed level used before canceling the cruise control. 6. Manual Cancel Mechanism If any of the following signals is input during cruise control travelling, the cruise control is cancelled. ∗ The stop lamp SW is turned on. ∗ The CANCEL SW is turned on. ∗ The main SW is turned off. ∗ Gear is shifted from D position to other positions than D (A/T). ∗ Clutch pedal depresed (M/T). 7. Auto Cancel Function If any of the following conditions is encountered, the cruise control is automatically cancelled. ∗ The stop lamp SW wiring is faulty or short–circuited. ∗ The vehicle speed signal is faulty. ∗ The electronically controlled throttle malfunctions. ∗ The actual vehicle speed becomes –16 km/h slower than the set speed. ∗ The actual vehicle speed becomes slower than the minimum speed limit. 8. Overdrive Control Function Overdrive is sometimes cut off on gradients during cruise control driving. When end of climbing gradient is determined by throttle opening degree information after overdrive is canceled, control is reset to overdrive condition after overdrive resetting timer operation. Also, when overdrive is cut off during accelerator resuming control, control is reset to overdrive condition when accelerator resuming control is finished. : Parts Location Code

See Page

A19

44

Code E8

See Page D

J1

Code

44 45

See Page

P1

43 (2TR–FE)

C9

44

C14

44

J9

D

45

D4

44

J10

E

45

S8

45

J11

F

45

S10

45

S1

A

43 (2TR–FE)

B

43 (2TR–FE)

E1

B

42 (2TR–FE)

E4

A

44

J12

45

T1

43 (2TR–FE)

E5

B

44

J13

45

V1

43 (2TR–FE)

E7

C

44

J14

45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

168 TOYOTA TACOMA (EM01D0U)

: Junction Block and Wire Harness Connector Code 1B 1C

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

24

Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1H 1I 1J 1K 2A DA DB DC DD PA PB PC PD PE PF

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IF1

55

Engine Wire and Engine Wire (Behind the Glove Box)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

: Ground Points Code

See Page

Ground Points Location

EA

53 (2TR–FE)

Front Right Fender

EB

53 (2TR–FE)

Front Left Fender

53 (2TR–FE)

Rear Side of Cylinder Block

IA

54

Left Kick Panel

IE

54

Right Kick Panel

EG EH

169 TOYOTA TACOMA (EM01D0U)

Multiplex Communication System – CAN

E7 Engine Control Module

Y1 Yaw Rate Sensor

2 E

1 E

15 IE1

5 IE1

Y

1 C

3

L 2 C

CANH

Y

2

L

CANL

33

B

CANH

34

W

CANL

10

Y–B

CANH

9

L–W

CANL

2 B

1 B

B–W

25 A

11 A

CANL

14

CANH

CANL

1 F

6 CANH

D4 Data Link Connector 3 W–B

S 1(A) Skid Control ECU with Actuator

1 D

W–B

1 IA3

W–L

2 IA3

2 D

Y–B

1 A

B–W

2 A

L–W

ST–Plug

W–L

J 6(A), J 7(B), J 8(C), J 9(D), J10(E), J11(F) Junction Connector

S9 Steering Sensor

1

J13 Junction Connector IE

170 TOYOTA TACOMA (EM01D0U)

System Outline Multiplex communication system (CAN) uses a serial communication protocol and communicates with a differential voltage. In this network system, TERMINALS CANH and CANL are used for communication between the ECUs and sensors, and excellent data communication speed and communication error detecting facility are provided. This system is working for the following systems: ∗ ABS ( w/ VSC) ∗ Auto LSD ∗ Cruise Control ∗ Downhill Assist Control ∗ Electronically Controlled Transmission and A/T Indicator ∗ Engine Control ∗ Hill–Start Assist Control ∗ TRAC ∗ VSC : Parts Location Code

See Page

D4 E7

Code

See Page

44

J9

D

45

44

J10

E

45

A

45

J11

F

45

J7

B

45

J8

C

45

J6

J13 S1

Code S1 S9

43 (2TR–FE) 45 47 (*1)

45 A

See Page A

Y1

41 (1GR–FE)

48 (*2) 49 (*3)

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA3

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IE1

54

Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)

: Ground Points Code IE

See Page 54

* 1 : Double Cab

Ground Points Location Right Kick Panel

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

171 TOYOTA TACOMA (EM01D0U)

ABS, TRAC, VSC, Auto LSD, DAC and HAC (BAT)

(BAT) 30A ABS NO. 2

(IG) 50A ABS NO. 1

2

15A IGN

+BM1

+BM2

IG2

W

L

S4 Speed Sensor (Front RH)

2

1

P

1 C

1

L

2 C

L

O

2 A

+BS

2

R

B

31 A

W

17 1C

G

2 2F

S3 Speed Sensor (Front LH)

1 2F

R

2

B

2

18 A

4 A

3 A

17 A

FL+

FL–

FR+

FR–

S 1(A), S 2(C) Skid Control ECU with Actuator

39 2A

33 2A

EB

172 TOYOTA TACOMA (EM01D0U)

EA

W–B

W–B

W–B

W–B

1 A

W–B

S22 Speed Sensor (Rear)

GND1 1 A

W–B

W–B

GND2 32 A

W–B

V–W

O L

3

GND3 4 C

2 A

O

B

J5 Junction Connector

LBL 41 A

W–B

W–B

(4WD)

4

W

W

1

B

BR

6 IB1

BR

5 IB1

Y

15 IB1

15

IC

RR– 19 A

14 IB1

2

13

RR+ 5 A

Y

(4WD)

W–B W–B

(4WD)

15 IA3

RL– 6 A

B 2(A) Brake Fluid Level Warning SW

RL+ 20 A

L

NEO 10 A

P

∗ 1 : w/ Downhill Assist Control ∗ 2 : w/ Auto LSD

G–B (A/T) R–W

CSW

P1 Park/Neutral Position SW

Y

(A/T)

(M/T)

Y IG1

BZ

BRL

WA

SP1 12 A

O

R–Y

21 IA1

19 IA1

36 IA1

GR

B–W

O

(∗2)

(∗1)

3

R–Y

B–W

6 IA3

(A/T)

GR

2 IA3

(∗2)

1 IA3

(∗1)

18 IA1

DAC

A27 Auto LSD SW

3

4

AUTO LSD W–B

4

(∗2)

P–B

W–L

29 A

W–L

3 C

B–W

30 A

B–W

46 A

GR–B

GR–B

CANL 25 A

P–B

11 A

4 IA3

W–B

D8 Downhill Assist Control SW

G–Y

(M/T)

CANH

43 A

(∗1)

G–Y 6 DC

G–Y

S 1(A), S 2(C) Skid Control ECU with Actuator

(A/T)

HDCS 44 A

(A/T)

P

P/R

PKB

R–Y(A/T) O

10

13

9

J14 Junction Connector

1

11

B–W GR

W–B

LG

W–B

P6 Parking Brake SW

B1 Back–Up Lamp SW

BR–W

EXI4

15 DC

12 IH1

14 A

28 A

3 DD

2

39 IA1

21 A

EXI

6

P

2

LG

27 A

19 PC

1

(4WD)

Y–B Y–B

LG–B

42 IA1

(4WD)

41 IA1

(4WD)

LG–B

(4WD)

G–B

(A/T)

18 PC

6 PB

R–W

5 PB

(M/T)

Transfer Indicator SW (L4 Position)

ADD Actuator Assembly

(M/T)

W–L B–W W–B W–B

173 TOYOTA TACOMA (EM01D0U)

ABS, TRAC, VSC, Auto LSD, DAC and HAC P

P LG (BAT)

LG (IG) 10A STOP

14 1C ∗ ∗ ∗ ∗

10A IG1 NO. 2

2

1 2 3 4

: w/ Downhill Assist Control : w/ Auto LSD : w/ Rear Diff. Lock : w/o Rear Diff. Lock

LG

2 G–W

9 1D

2 DC

7 DC

9 DC

G–B

R–B

W

V

24 A

13 A

42 A

EXI3

TS

WFSE

R–W

16 IA3

18 IA3

S 1(A), S 2(C) Skid Control ECU with Actuator

L–W Y–B

L–W(4WD)

R–W

L–W(2WD)

D/G

IND 34 A

Y

(∗1)

L–B

12 IB1

L–Y

G–W (∗2)

VSCW 36 A

(∗1)

LG–R

13 IB1

(∗2)

L–W 17 IA3

LG–R

HDCW 33 A

26 A

CANL 14

L–W

20 DB

CANH

Y

INFR 15 A

STPO

Y–B

10 DA

15 DD

16 A

STP

L–B

WT 35 A

(∗3)

V

L

L L L

7 A

STP2

6

7 DA

2 1B

45 A

WFSE 15

7 DD

2

15 1C

SIL 7

W

2

Transfer Indicator SW (Rear Diff. )

2

1

2

TS 12

R–B

3

4 IB1

L–Y

4

S10 Stop Lamp SW

2

1

STOP LP CTRL Relay

5

D4 Data Link Connector 3

L–Y

LG

2

(∗4)

G–W

2

R–W Y L–B(∗1) LG–R(∗2) L–W(4WD) L–W(2WD)

R–Y(A/T)

R–Y(A/T)

O

O

B–W

B–W

GR

GR

LG

LG

W–L

W–L

B–W

B–W

W–B

W–B

W–B

W–B

174 TOYOTA TACOMA (EM01D0U)

P LG

LG

LG

LG R (BAT)

P

(IG)

7. 5A GAUGE

7. 5A ECU–B

(IG) 1 1I

13 1H 10A IG1

2 3 1J

2 13 1K

R

V

16 1C

1 A

BRAKE

ABS

VSC OFF

AUTO LSD

DAC

VSC TRAC

Slip

P

21 A

9 1J

(M/T)

R

C 9(A), C10(B) Combination Meter

7 PF

1 IG+ SI

9 IH1

R–Y

3

(M/T)

2

8 IH1

R–Y

W–B

B–W

O

R–Y(M/T)

L–W

R–Y(A/T)

L–W

(2WD)

W

3 A

(M/T)

2 A

W

10 B

(M/T)

9 B

(M/T)

6 A

(4WD)

L–W

L–B

37 A

(∗2)

Y

35 A

LG–R

13 B

(∗1)

38 A

R–W

SE 36 A

V1 Vehicle Speed Sensor (Combination Meter)

P

(M/T)

Reverse

Speed Control

Reverse

4 PA

L–W Y–B

Y–B R–W 7 ID2

6 ID2

2 ID1

L–W

L–B(∗1)

(2WD)

Y

LG–R(∗2) 1 ID1 L–W(4WD) L–W(2WD) R–Y(A/T) O B–W

W–B

GR

GR

LG

LG

W–L

W–L

B–W

B–W

W–B

W–B

W–B

W–B

175 TOYOTA TACOMA (EM01D0U)

ABS, TRAC, VSC, Auto LSD, DAC and HAC LG–B

LG LG

LG

R

Y 2

9

10

34

33

2 C

1 C

2 E

1 E

2 B

1 B

2 A

1 A

2 D

1 D

1 F

Y–B

W–B

ST–Plug

L–W

J 6(A), J 7(B), J 8(C), J 9(D), J10(E), J11(F) Junction Connector

LG

LG

Y

CANH

L

CANL

B

CANH

W

CANL

Y–B

ESS

2 Buzzer

V7 VSC Warning Buzzer

L

BAT

B–W

3 DC

1G

E7 Engine Control Module

L–W

13 DA

3

W–L

6 DD 12 DA

1

W–B

13 DC 12 DC

S9 Steering Sensor

LG

LG–B

LG

LG

R

GR

1

L–W Y–B

W–B

W–B GR

W–B

LG W–L B–W

1 W–B

J13 Junction Connector

2

W–B W–B

IE

176 TOYOTA TACOMA (EM01D0U)

LG–B

LG–B

14 IA3 L

5 IE1

15 IE1

3 IE1

Y

L

LG

LG–B

Y

2

5

3 CANH

CANL

IG

GND

Y1 Yaw Rate Sensor

W–B

1

W–B

W–B

10 1F

18 1H

W–B

2

4

W–B

W–B

W–B

J1 Junction Connector IA

BA

177 TOYOTA TACOMA (EM01D0U)

ABS, TRAC, VSC, Auto LSD, DAC and HAC System Outline 1. Normal Operation The VSC system helps prevent the vehicle from slipping sideways as a result of strong front wheel skid or strong rear wheel skid during cornering. The followings are two examples that can be considered as circumstances in which the tires exceed their lateral grip limit. The VSC system is designed to help control the vehicle behavior by controlling the engine’s output and the brakes at each wheel when the vehicle is under one of the conditions indicated below. ∗ When the front wheels lose grip in relation to the rear wheels (Strong front wheel skid tendency). ∗ When the rear wheels lose grip in relation to the front wheels (Strong rear wheel skid tendency). 2. Electronic Brake–Force Distribution Skid control ECU with actuator distributes appropriate brake–force to front and rear wheels (Control of brake–force distribution to front and rear wheels) corresponding to the vehicle driving conditions. It also makes effective use of rear wheel brake–force to match loading condition and decelerating of the vehicle, resulting to reduce depressing of brake pedal and to ensure effective braking. In braking during making a turn, the ECU controls appropriate brake–force distribution to right and left wheels (Control of brake–force distribution to right and left wheels) to ensure stability and braking of the vehicle. 3. Downhill Assist Control Operation The downhill assist control operation controls braking action of each wheel to help prevent out–of–balance vehicle posture when descending a steep hill or traveling at a speed exceeding the threshold of wheel gripping capability. When the downhill assist control is in operation, the brake system controls vehicle speed within the range of 5 to 7 km/h. For the downhill assist control to be operative all of the following conditions have to be met: ∗ Downhill assist control switch = ON ∗ Transfer L4 selected ∗ Vehicle speed is 5 km/h or more, but less than 25 km/h. ∗ Accelerator pedal OFF ∗ Brake pedal OFF 4. Hill–Start Support Control Operation When starting on a steep hill for ascending, the hill–start support control automatically puts the brake on momentarily – from the moment when the driver releases his foot from the brake pedal until he steps on the accelerator pedal – to help the driver start the vehicle safely and smoothly. Please bear in mind, however, that it activates the brake system for only 3 seconds. For the hill–start support control to be operative all of the following conditions have to be met: ∗ Shift position = D, 2, or L ∗ Vehicle not moving forward with some wheel(s) slipping ∗ Vehicle speed > 0 km/h 5. Active TRAC (4WD) Active traction control system provides great effect of LSD (Limited Slip Differential) to deliver driving force lost due to the acceleration slip to each of 4 wheels by conducting the brake oil control on slipped wheels caused by acceleration during 4WD driving. 6. Auto LSD (2WD) Auto LSD fulfills the function of LSD (Limited Slip Differential) by using the system of TRAC. It controls to focus on ’getting out’, which ensures to recover from run–off condition and to take off on roads with much travel resistance such as sand.

178 TOYOTA TACOMA (EM01D0U)

: Parts Location Code

See Page

A27

44

B1 B2

A

C9 C10

Code

See Page

Code

C

45

40 (1GR–FE)

J9

D

45

42 (2TR–FE)

J10

E

45

40 (1GR–FE)

J11

F

45

S9

45

S10

45

42 (2TR–FE)

J13

45

A

44

J14

45

B

44

D4

44

D8

44

E7

44

J1

45

J5

45

J6

A

45

J7

B

45

C S3

41 (1GR–FE) 43 (2TR–FE)

48 (*2) 49 (*3)

45 A

43 (2TR–FE)

47 (*1) S22

43 (2TR–FE)

P6

S2

S4

41 (1GR–FE)

P1

S1

S3

See Page

J8

V1

41 (1GR–FE) 43 (2TR–FE)

V7

41 (1GR–FE)

41 (1GR–FE) 43 (2TR–FE) 45 47 (*1)

43 (2TR–FE)

Y1

41 (1GR–FE)

48 (*2) 49 (*3)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1B

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1D

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

1F

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

2F

25

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1C

1H 1I 1J 1K

DA DB DC DD PA PB PC PF

: Connector Joining Wire Harness and Wire Harness Code IA1

See Page

Joining Wire Harness and Wire Harness (Connector Location)

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

54

Frame Wire and Engine Room Main Wire (Left Kick Panel)

54

Frame Wire and Instrument Panel Wire (Left Kick Panel)

IE1

54

Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

IA3 IB1 ID1 ID2

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

179 TOYOTA TACOMA (EM01D0U)

ABS, TRAC, VSC, Auto LSD, DAC and HAC : Ground Points Code EA EB

See Page 52 (1GR–FE) 53 (2TR–FE) 52 (1GR–FE) 53 (2TR–FE)

Ground Points Location Front Right Fender Front Left Fender

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

56 (*1) BA

57 (*2)

Floor Seat Cross Member LH

58 (*3) * 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

180 TOYOTA TACOMA (EM01D0U)

Memo

181 TOYOTA TACOMA (EM01D0U)

ABS (BAT)

(BAT) 50A ABS NO. 1

30A ABS NO. 2

2

D9 Deceleration Sensor

G–W

2

3

18 IE1

D4 Data Link Connector 3

(Shielded)

B

(∗1)

W

2

S10 Stop Lamp SW

7 IE1

8 IE1

2

TC

GL1

TS

P–B

W

R–B

12

L

Y

R

(Shielded)

B

(∗1)

(∗1)

2 1B

2 DA

10 DA

7 DA

15 1C

8 DC

7 DC

2 DC

2 B

+BM

+BS

R–B

31 B

VGS

W

37 B

GGND

P–B

B

(Shielded)

12 IA3

(∗1)

W W 8 B

7

L

4 B

10 IA3

(∗1)

(∗1)

R R

(∗1)

W–B

13 IA3

SIL

13

1

11 IA3

: 4WD, Prerunner : w/ Rear Diff. Lock : w/o Rear Diff. Lock : 1GR–FE A/T : 2TR–FE A/T

2

VGS

2

(∗1)

R 17 IE1

GGND

(∗1)

GL1 1

1 2 3 4 5

10A STOP

2

2

∗ ∗ ∗ ∗ ∗

(BAT)

14 B

21 B

13 B

20 B

STP

TC

D/G

TS

S 1(B) Skid Control ECU with Actuator RR–

O O

2

1

4

3

L

W

B

1

W

2

BR

1

L

P

6 IB1

L

5 IB1

L

B

45 B

15 IB1

W

L

RR+ 44 B

14 IB1

R

G W

RL– 16 B

S4 Speed Sensor (Front RH)

S3 Speed Sensor (Front LH)

W–B

W–B W–B

2

RL+ 15 B

BR

FR– 39 B

Y

FR+ 40 B

W–B

EA

FL– 9 B

Y

FL+ 10 B

W–B

GND2 32 B

W–B

GND1 1 B

S22 Speed Sensor (Rear)

EB

182 TOYOTA TACOMA (EM01D0U)

P6 Parking Brake SW

G–Y

R–Y

R–Y

6 DC 36 IA1

L–Y

21 IA1 38 IA1

42 IA1 7 DD

3 DC 15 DD

S 1(B) Skid Control ECU with Actuator IG1 7 B

EXI2

N P

36 B 6 B

1

TOYOTA TACOMA (EM01D0U) 5 PB 8 PB

18 PC 11 PC

(∗5)

Y

(∗2)

L–Y

LG

P

(∗3)

13 1H

G–W

(∗4)

L–W

(A/T)

G–B

13 DC

P1 Park/Neutral Position SW

Transfer Indicator SW (Rear Diff. )

L–Y

LG

Transfer Indicator SW (L4 Position)

ADD Actuator Assembly

10A IG1 NO. 2

(A/T)

LG

Y–B (4WD)

6

G–W

Y–B (4WD)

LG–B (4WD)

4 IB1

G–B

43 B

9 1D

(A/T)

BRL

G–B

17 B 46 B

(A/T)

WA

G–B

LG–B (4WD)

14 1C

(A/T)

EXI4

(A/T)

G–W

38 B

(A/T)

19 IA1

G–W

18 B

B–W

23 B

B–W

SP1

O

PKB

O

EXI

(A/T)

24 B

(A/T)

G–Y

41 IA1

(M/T)

3 DD

G–Y

(A/T)

(IG) (IG)

10A IG1

9 1J

(M/T)

P

12 IH1

2

P

N 9

39 IA1

15 DC

B–W

O

(A/T)

R–Y

183

R–Y

R–Y

W

W

9 IH1

R–Y

2 SE

(M/T)

V1 Vehicle Speed Sensor (Combination Meter)

Speed Control

Reverse

Reverse

(M/T)

P

ABS

BRAKE

21 A

(M/T)

2 A

(M/T)

6 A

W–B

(M/T)

9 B

(A/T)

10 B

O

B–W

C 9(A), C10(B) Combination Meter

P (M/T)

V

ABS (IG)

7. 5A GAUGE

3 1J

(M/T) P

7 PF

4 PA

1

IG+

3 SI

3 A

8 IH1

B–W

O

(A/T)

R–Y

2

J1 Junction Connector

IA

184

TOYOTA TACOMA (EM01D0U)

System Outline This system controls the respective brake fluid pressures acting on the disc brake cylinders of the right front wheel, left front wheel and rear wheels when the brakes are applied in a panic stop so that the wheels do not lock. This results in improved directional stability and steerability during panic braking. 1. Input Signals (1) Speed sensor signal The speed of the wheels is detected and input to TERMINALS (B) 10, (B) 15, (B) 40 and (B) 44 of the skid control ECU with actuator. (2) Stop lamp SW signal A signal is input to TERMINAL (B) 14 of the skid control ECU with actuator when the brake pedal is depressed. 2. System Operation During sudden braking the skid control ECU with actuator has signals input from each sensor, which controls the current to the solenoid inside the actuator and lets the hydraulic pressure acting on each wheel cylinder escape to the reservoir. The pump inside the actuator is also operating at this time and it returns the brake fluid from the reservoir to the master cylinder, thus preventing locking of the vehicle wheels. If the skid control ECU with actuator judges that the hydraulic pressure acting on the wheel cylinder is insufficient, the current on the solenoid is controlled and the hydraulic pressure is increased. Holding of the hydraulic pressure is also controlled by the skid control ECU with actuator, by the same method as above. Pressure reduction, holding and increase are repeated to maintain vehicle stability and to improve steerability during sudden braking. : Parts Location Code

See Page

Code

See Page

C9

A

44

P1

43 (2TR–FE)

C10

B

44

P6

45

D4

44

S1

46 (*1) 48 (*2)

D9

S3

49 (*3) J1

45

P1

41 (1GR–FE)

B

S4

Code S10

See Page 45 47 (*1)

41 (1GR–FE)

S22

43 (2TR–FE)

48 (*2) 49 (*3)

41 (1GR–FE)

V1

43 (2TR–FE)

41 (1GR–FE) 43 (2TR–FE)

41 (1GR–FE) 43 (2TR–FE)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1B 1C 1D 1H 1J DA DC DD PA PB PC PF

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

185 TOYOTA TACOMA (EM01D0U)

ABS : Connector Joining Wire Harness and Wire Harness Code IA1

See Page

Joining Wire Harness and Wire Harness (Connector Location)

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IB1

54

Frame Wire and Engine Room Main Wire (Left Kick Panel)

IE1

54

Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

IA3

: Ground Points Code EA EB IA

See Page 52 (1GR–FE) 53 (2TR–FE) 52 (1GR–FE) 53 (2TR–FE) 54

Ground Points Location Front Right Fender Front Left Fender Left Kick Panel

186 TOYOTA TACOMA (EM01D0U)

SRS NOTICE: When inspecting or repairing the SRS, perform service in accordance with the following precautionary instructions and the procedure, and precautions in the Repair Manual applicable for the model year. D Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of information when troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery. D Work must be started more than 90 seconds after the ignition SW is turned to the ”LOCK” position and the negative (–) terminal cable is disconnected from the battery. (The SRS is equipped with a back–up power source so that if work is started within 90 seconds from disconnecting the negative (–) terminal cable of the battery, the SRS may deploy.) D When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will be cleared. So before starting work, make a record of the contents in the audio memory system. When work is finished, reset the audio systems as they were before and adjust the clock. Some vehicles have power tilt steering, power telescopic steering, power seat and power outside rear view mirror which are all equipped with memory function. However, it is not possible to make a record of these memory contents. So when the work is finished, it will be necessary to explain it to your customer, and ask the customer to adjust the features and reset the memory. To avoid erasing the memory in each system, never use a back–up power supply from outside the vehicle. D Before repair, remove the airbag sensor if shocks are likely to be applied to the sensor during repair. D Do not expose the following parts directly to hot air or flame; D Even in cases of a minor collision where the SRS does not deploy, the following parts should be inspected; D Never use SRS parts from another vehicle. When replacing parts, replace with new parts. D For the purpose of reuse, never disassemble and repair the following parts. D If the following parts have been dropped, or have cracks, dents and other defects in their case, bracket, and connector, replace with new one. D Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting electrical circuits of the system. D Information labels are attached to the periphery of the SRS components. Follow the instructions of the notice. D After work on the SRS is completed, check the SRS warning light. D If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the Repair Manual. ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗

Steering wheel pad Front passenger airbag assembly Side airbag assembly Curtain shield airbag assembly Seat belt pretensioner Center airbag sensor assembly Front airbag sensor assembly Side airbag sensor assembly Rear airbag sensor assembly

187 TOYOTA TACOMA (EM01D0U)

SRS (IG)

(IG)

7. 5A GAUGE

3 1J

10A IG1

P

9 1J

F17 Front Seat Outer Belt (LH)

F18 Front Seat Outer Belt (RH)

Pretensioner

Pretensioner

7 PF 1

1

2

2

2

Y

(∗1)

(∗1)

Y–B

Y

(∗1)

(∗1)

IL1 1 BG2

Y

2 BG2

V

GR

17 A

23 A

13 A

21 P–AB

2 B

PBEW

PAON

Y

(∗1)

(∗1)

Y–B

Y

IL1

L–W

1

(∗1)

12

(∗1)

Y–B

AIR

5

4 C

1 B

PD+

5 C

PP+

PD–

PP–

LA

E1

E2

D+

D–

14 A

25 A

26 A

5 A

6 A

8 A

7 A

W–B

W–B

Y–B

Y

Y–V

Y–O

D2+

D2–

P+

P–

4 A

3 A

P2+ 1 A

P2– 2 A

Y–GR

L–Y

II1

Y–G

6

33

Y–R

B–Y

Reverse

C9 Combination Meter

A21(A), A22(B), A23(C) Airbag Sensor Assembly Center

3 IG1

4 IG1

1 IG1

2 IG1

W–B

W–B IB

3

Y–G

4

1 A

2 A

1 B

2 B

Spiral Cable

18 1H

4

2

Y–R

1

Y

19 1H

Y–B

B–Y

A26 Airbag Squib (Steering Wheel Pad)

J1 Junction Connector IA

188 TOYOTA TACOMA (EM01D0U)

A24(A), A25(B) Airbag Squib (Front Passenger' s Airbag Assembly)

(∗2)

(∗2)

Y–B

2 BF2

Y

1 BF2

(∗2)

(∗2)

Y–B

(∗3)

GR

PBEW

SW–

SRS

(∗3)

GR–B

(∗3)

8

IG+

Y–B

3

(∗3)

H7 Hazard Warning Signal SW Assembly

P

V

GR–B

13 PF

: Access Cab : Except Access Cab : Separate Seat : w/ Side Airbag : Except Double Cab

9 B SFD+

10 B SFD–

7 C

7 B

SFP–

ICD+

9 C

ICD–

2

11 A

10 C

ICP+

12 A

MSW+

ICP–

PMC–

G

L

(∗4)

(∗4)

(∗4)

6 B

1

2

(∗5)

1

Y–O

2

(∗4)

(∗4)

6 C

SFP+

A20 Airbag Cut Off SW

PMC+ 1

Y–G

(∗4)

Y–R

2

(∗4)

SFR–

1

Y–G

SFR+

2

(∗4)

SFL–

1

Y–R

SFL+

C17 Curtain Shield Airbag Squib (RH)

(∗5)

C16 Curtain Shield Airbag Squib (LH)

Y–O

S27 Side Airbag Squib (RH)

Y–V

S26 Side Airbag Squib (LH)

1 2 3 4 5

Y–V

∗ ∗ ∗ ∗ ∗

MSW–

A21(A), A22(B), A23(C) Airbag Sensor Assembly Center

3 BBL–

BCL+

BCL–

1

2

LG

(∗4)

(∗4)

L–Y

S12 Side Airbag Sensor (Front RH)

(∗4)

LG–B

(∗4)

BR–W

L–W

S11 Side Airbag Sensor (Front LH)

4 BBL+

BBP– 11 C

4

3

BBR+

BBR–

BCR+

BCR–

1

2

1

BCR+

BCR–

A11 Airbag Sensor (Front LH)

A12 Airbag Sensor (Front RH)

S13 Side Airbag Sensor (Rear LH)

GR

2

BCL–

(∗4)

1

BCL+

P

2

–SR

(∗4)

1

+SR

(∗4)

2

–SL

GR–L

1

+SL

(∗4)

2

P–L

BR–W

1 IA2

BBP+ 8 C

B–W

2 IA2

BBD– 15 B

BR

3 IA2

8 B

W–G

4 IA2

BBD+

–SR 27 A

B–W

+SR 29 A

BR

–SL 28 A

W–G

+SL 30 A

S14 Side Airbag Sensor (Rear RH)

189 TOYOTA TACOMA (EM01D0U)

SRS

O

E7 Engine Control Module

P(∗6)

D4 Data Link Connector 3

W(∗6) W(∗3) F/PS G–B(∗6)

P–B

W

7

W(∗3)

SIL

13

W(∗6)

TC

32

2 DA

10 DA

17 DB

G–R(∗6)

R

G–B(∗3) G–R(∗3)

P–B

W

21 A

15 A

16 A

IG2

GSW2

TC

24 A

13 C

GSW3

SIL

FSP–

A21(A), A22(B), A23(C) Airbag Sensor Assembly Center

1

R–B

(∗6) (∗6)

B–G

1 BL1

2

(∗6)

2 BL1

R–B

4

(∗6)

G–W

3

4 BK1

(∗6)

3 BK1

G–W

1

(∗6)

2

DSP– 13 B

(∗6)

(∗3)

R–B

(∗3)

G–W

B

(∗3)

(∗3)

G–Y

(∗6)

B B

G–Y

(∗6) (∗6)

4 BL1

B

(∗6)

1 BK1

3 BL1

2

DSP+ 14 B

G–Y

(∗6)

2 BK1

G–Y

DBE– 12 B

G–W

DBE+ 11 B

1

Seat Position Airbag Sensor

F23 Front Seat Inner Belt (Driver' s Side)

F20 Front Seat Inner Belt (Driver' s Side)

S25 Seat Position Airbag Sensor (Driver' s Side)

190 TOYOTA TACOMA (EM01D0U)

G–R(∗3)

O

22 A

G–R(∗6)

R

19 DB

G–B(∗3)

G–B(∗6)

II1

P(∗6)

10

8 DB

12 C FSP+

(IG)

(BAT)

15A IGN 20 1H

O

∗ 3 : Separate Seat ∗ 6 : Bench Seat

7. 5A ECU–B

2 2 5 1I

13 1I

16 1C

R O P(∗6)

O(∗6)

(∗3)

O(∗6)

(∗3)

R(∗3)

P(∗6)

W(∗6)

W(∗6)

W(∗3) G–B(∗6)

G–B(∗6)

G–R(∗6)

FSR–

DIA

(∗3)

R 1 B

IG

+B

11 A

7 A

SVC1

1 A

SIG1

12 A

SGD1

8 A

SVC2

O

(∗3)

(∗3)

R–L

(∗3)

3

L

SGD2

2

(∗3)

SIG2

1

G

SVC2

3

(∗3)

SGD1

2

(∗3)

SIG1

1

LG–B

R

7 B

SVC1

B–L

R

3 BH1

(∗3)

O

2 B

O7 Occupant Classification Sensor (Front RH)

IL1

(∗3)

(∗3)

O O

(∗3)

6

2 BH1

1 BH1

W

(∗3)

4 B

FSR+

IL1

(∗3)

W 8 B

6 BH1

G–B

(∗3)

G–R

5 BH1

7

IL1

W

8

(∗3)

G–R(∗3)

(∗3)

G–B(∗3)

(∗3)

G–R(∗6)

O6 Occupant Classification Sensor (Front LH)

2 A

SIG2

SGD2

O 4(A), O 5(B) Occupant Classification ECU GND

BSW 9 B

BGND 5 B

SVC3 5 A

SIG3 9 A

SGD3 3 A

SVC4 6 A

SIG4 10 A

SGD4 4 A

(∗3)

B–R

(∗3)

L–R

(∗3)

GR–L

(∗3)

P–G

(∗3)

R–B

(∗3)

B–O

(∗3)

P–G

B

(∗3)

(∗3)

W–B

3 B

4 BH1

F25 Front Seat Inner Belt (Front Passenger' s Side)

(∗3)

W–B

IL1

7

1

1

2

3

1

2

3

SVC3

SIG3

SGD3

SVC4

SIG4

SGD4

O8 Occupant Classification Sensor (Rear LH)

W–B(∗6)

O9 Occupant Classification Sensor (Rear RH)

W–B(∗6)

J14 Junction Connector

13

W–B

4

(∗3)

W–B

2

2

J13 Junction Connector IE

191 TOYOTA TACOMA (EM01D0U)

SRS

∗ 6 : Bench Seat

O(∗6)

S29 Seat Belt Tension Sensor

P(∗6) W(∗6)

G–B(∗6)

FSR–

(∗6)

LG LG

6 BJ2

(∗6)

V

(∗6)

17

GBT

BT 1

7 BJ2

V

(∗6)

G G

8 BJ2

8

IG

VBT 2

(∗6)

O

9

GSW4

GBT 3

(∗6)

(∗6)

O O

2 BJ2

(∗6)

9 BJ2

1

DIA

IL1

(∗6)

(∗6)

P P

7

(∗6)

IL1

P

W W

(∗6)

10

3

(∗6)

W

12

FSR+

(∗6)

(∗6)

G–B

11

IL1

1 BJ2

5 BJ2

(∗6)

(∗6)

G–R

4 BJ2

G–B

(∗6)

G–R

8

(∗6)

G–R(∗6)

16

VBT

BT

O10 Occupant Classification ECU PS 6

3

(∗6)

R–B

L

(∗6)

(∗6)

GR

(∗6)

P–G

(∗6)

B

GPS 15

VPS 7

(∗6)

GSP

L–W

SP 4

(∗6)

W–B

BGND 14

(∗6)

BSW 13

5

LG–B

GND

IL1

F24 Front Seat Inner Belt (Front Passenger' s Side)

4

(∗6)

W–B

2

1

S28 Seat Position Airbag Sensor (Front Passenger' s Side)

3 BJ2

2

1

2 PS

1

3

GPS

VPS

O11 Occupant Classification Sensor

W–B(∗6)

192 TOYOTA TACOMA (EM01D0U)

System Outline ∗ The system reaches an ignition judgment to deploy the following device based on the signals received from the front airbag sensor and deceleration sensor. – Driver Airbag – Front Passenger Airbag – Seat Belt Pretensioner ∗ The system reaches an ignition judgment to deploy the following device based on the signals received from the side airbag sensors. – Side Airbags – Curtain Shield Airbags ∗ The dual–stage SRS airbag system has been used for the driver and front passenger airbags. This system controls the optimal airbag inflation by judging the extent of impact, seat position (driver seat), whether or not the seat belt is fastened (driver seat) and information from the front passenger occupant classification system. ∗ The front passenger occupant classification system judges whether the front passenger seat is occupied by an adult or child (with child seat) or is unoccupied, according to the load applied to the front passenger seat and whether the seat belt is buckled. Based on the results, it restricts the deployment of the front passenger airbag, front passenger side airbag, and front passenger seat belt pretensioner. In addition, the system informs the driver of the result of the judgment through the use of the AIRBAG ON/OFF indicator lights. ∗ The front passenger occupant classification system judges whether the front passenger seat is occupied by an adult or child (with child seat) or is unoccupied, according to the load applied to the front passenger seat, seat position (passenger), the load applied to the belt tension sensor (passenger), and whether the seat belt is buckled (passenger). Based on the results, it restricts the deployment of the front passenger airbag, front passenger side airbag, and front passenger seat belt pretensioner. In addition, the system informs the driver of the result of the judgment through the use of the AIRBAG ON/OFF indicator lights. ∗ The airbag manual ON–OFF switch is used to disable the deployment of the front and side airbags for the front passenger, such as when a child seat is installed on the front passenger seat. ∗ The airbag sensor assembly transmits a signal to the engine control module in order to stop the fuel pump when the airbag is deployed. : Parts Location Code

See Page

Code

See Page

40 (1GR–FE)

A11

42 (2TR–FE)

A12 A20

Code

See Page

46 (*1)

O6

50 (*4)

48 (*2)

O7

50 (*4)

40 (1GR–FE)

49 (*3)

O8

50 (*4)

42 (2TR–FE)

46 (*1)

O9

50 (*4)

48 (*2)

O10

51 (*5)

49 (*3)

O11

51 (*5)

F17

44

F18

A21

A

44

A22

B

44

F20

50 (*4)

S11

47 (*1)

A23

C

44

F23

51 (*5)

S12

47 (*1)

A24

A

44

F24

51 (*5)

S13

47 (*1)

A25

B

44

F25

50 (*4)

S14

47 (*1)

A26

44

H7

45

S25

51 (*5)

C9

44

J1

45

S26

50 (*4)

C16

46 (*1)

J13

45

S27

50 (*4)

C17

46 (*1)

J14

45

S28

51 (*5)

D4

44

O4

A

50 (*4)

S29

49 (*3)

E7

44

O5

B

50 (*4)

: Relay Blocks Code 2

See Page 24

* 1 : Double Cab

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

193 TOYOTA TACOMA (EM01D0U)

SRS : Junction Block and Wire Harness Connector Code 1C

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1H 1I 1J DA DB PF

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA2

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IG1

55

Instrument Panel Wire and Instrument Panel Assembly Wire (Behind the Glove Box)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

IL1

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BF2

57 (*2)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)

BG2

57 (*2)

Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)

BH1

60 (*4)

Floor Wire and Seat No.1 Wire (Under the Front Passenger’s Seat)

BJ2

61 (*5)

Floor Wire and Seat No.1 Wire (Under the Front Seat RH)

BK1

61 (*5)

Floor No.2 Wire and Seat No.1 Wire (Under the Front Seat LH)

BL1

61 (*5)

Seat No.2 Wire and Seat No.1 Wire (Under the Front Seat LH)

: Ground Points Code

See Page

Ground Points Location

IA

54

Left Kick Panel

IB

54

Instrument Panel Brace LH

IE

54

Right Kick Panel

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

194 TOYOTA TACOMA (EM01D0U)

Memo

195 TOYOTA TACOMA (EM01D0U)

Power Window (BAT)

(IG) 10A IG1 NO. 2

20A DR LCK

7. 5A ECU–B

(BAT)

R

50A J/B

R

(BAT)

2

2

4 IC1 2

R

L

R

2

16 1C

6 1A

1 1H

3

2

6

4

ECUB

5 IG

ALTB

13

1

PWS P/W Relay

Body ECU PCTY

DCTY

GND

20

26

1

8 1I

7 1F

2

5 1

20A P FR P/W

R–B

20A P RR P/W

6 BA1

W

W

9 IK1

6

(∗1)

16 1H

IL2

W

(∗1)

(∗1)

W

(∗2)

G–Y

W

2 BF1

(∗2)

R–B

17 1F

(∗1)

14 1H

W

18 1H

W–B

(∗2)

(∗1)

G–Y

(∗2)

R–B (∗1)

R–B

2 BG1

6 BB1

W(∗1)

1

D11 Door Courtesy SW (Driver' s Side)

D12 Door Courtesy SW (Front Passenger' s Side)

20A D RR P/W

IL1

G–Y

5

30A D FR P/W

W(∗1) 1 W

W–B

196 TOYOTA TACOMA (EM01D0U)

∗ 1 : Double Cab ∗ 2 : Access Cab

R

7 A (∗1) 9 B (∗2)

P 9(A), (B) Power Window Master SW

Up

Down

Auto Down

Front Passenger' s

IC

15 A (∗1) 10 B (∗2)

L–Y

B

9 A (∗1) 4 B (∗2)

B

L

3 IC1

L–Y

4 A 3 B

2 IC1

7 IK1

8 IK1

L–B

1 A 1 B

W–B

18 A 8 B

8 IC1

W–B

2

M

1

P10 Power Window Regulator Motor (Front LH)

W(∗1)

W(∗1)

W(∗1)

W(∗1) W

B

5

2

SU

SD

Up

Down

4 B

D

3

1

L–B

U

L

W–B

P14 Power Window SW (Front Passenger' s Side)

L–Y

W

2

5 W–B

J1 Junction Connector

4

M

1

P11 Power Window Regulator Motor (Front RH)

IA

197 TOYOTA TACOMA (EM01D0U)

Power Window ∗ 1 : Double Cab

P 9(A), (B) Power Window Master SW

Up

Up Normal

G

(∗1)

IL2

G

8 BB1

7 BA1

(∗1)

G 1

(∗1)

G–B

(∗1) (∗1)

G–B

IL2

G–B

G–R

8 BA1

6 IC1

(∗1)

G–R

(∗1)

5

10 IE1

(∗1)

G–W

20 IE1

5 IC1

(∗1)

G–R

1 IC1

(∗1)

G–W

7 IC1

16 A (∗1)

10 A

13 A

(∗1)

G–W

12 A

(∗1)

Lock

Window Lock SW

Down

Rear RH

Down

Rear LH

7 BB1

W(∗1)

G

2

4

SU

SD

U

D

5

1

5

2

M

1

L–B

D

1

L

Up

U

L–B

Up

Down

3 B

P16 Power Window SW (Rear RH)

4 SD

Down

2 SU

(∗1)

(∗1)

G–B

W(∗1)

G

(∗1)

(∗1)

G–B

3 B

L

P15 Power Window SW (Rear LH)

W(∗1)

W(∗1)

2

P12 Power Window Regulator Motor (Rear LH)

M

1

P13 Power Window Regulator Motor (Rear RH)

198 TOYOTA TACOMA (EM01D0U)

System Outline With the ignition SW turned on, current flows through the IG1 NO.2 fuse to TERMINAL 5 of the body ECU to TERMINAL 13 to TERMINAL 1 of the P/W relay to TERMINAL 2 to GROUND, activating the P/W relay, and the current flowing from TERMINAL 3 of the P/W relay flows to TERMINAL 5 to D FR P/W fuse to TERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the power window master SW, P FR P/W fuse to TERMINAL 4 of the power window SW (Front passenger’s side), D RR P/W fuse to TERMINAL 3 of the power window SW (Rear LH), P RR P/W fuse to TERMINAL 3 of the power window SW (Rear RH). 1. Manual Operation (Driver’s Window) With the ignition SW turned on and with the power window master SW (Manual SW) in UP position, the current flowing to TERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the power window master SW flows to TERMINAL (A) 4 (Double cab), (B) 3 (Access cab) to TERMINAL 2 of the power window regulator motor (Front LH) to TERMINAL 1 to TERMINAL (A) 9 (Double cab), (B) 4 (Access cab) of the master SW to TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) to GROUND and causes the power window regulator motor to rotate in the up direction. The window ascends only while the SW is being pushed. In down operation, the current flowing from TERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the power window master SW to TERMINAL (A) 9 (Double cab), (B) 4 (Access cab) flows to TERMINAL 1 of the motor LH to TERMINAL 2 to TERMINAL (A) 4 (Double cab), (B) 3 (Access cab) of the master SW to TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) to GROUND, flowing in the opposite direction to manual up operation, causing the motor to rotate in reverse and lowering the window. 2. Auto Down Operation (Driver’s Window) With the ignition SW on and with the auto SW of the power window master SW in DOWN position, the current flowing to TERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the master SW flows to TERMINAL (A) 9 (Double cab), (B) 4 (Access cab) of the master SW to TERMINAL 1 of the power window regulator motor (Front LH) to TERMINAL 2 to TERMINAL (A) 4 (Double cab), (B) 3 (Access cab) of the master SW to TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) to GROUND, causing the motor to rotate towards the down side. Then the solenoid in the master SW is activated and it locks the auto SW being pushed, causing the motor to continue to rotate in auto down operation. When the window has completely descended, the current flowing between TERMINAL (A) 4 (Double cab), (B) 3 (Access cab) of the master SW and TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) increases. As a result, the solenoid stops operating, the auto SW turns off and the flowing from TERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the master SW to TERMINAL (A) 9 (Double cab), (B) 4 (Access cab) is cut off, stopping the motor so that auto stop occurs. 3. Stopping of Auto Down at Driver’s Window When the manual SW (Driver’s) is pushed to the up side during auto down operation, a ground circuit opens in the master SW and current does not flow from TERMINAL (A) 4 (Double cab), (B) 3 (Access cab) of the master SW to TERMINAL (A) 1 (Double cab), (B) 1 (Access cab), so the motor stops, causing auto down operation to stop. If the manual SW is pushed continuously, the motor rotates in the up direction in manual up operation. 4. Manual Operation by Power Window Control SW (Front RH Window) With the power window SW (Front passenger’s side) is pushed to the up side, the current flowing from TERMINAL 4 of the power window SW (Front passenger’s side) flows to TERMINAL 3 to TERMINAL 2 of the power window regulator motor (Front RH) to TERMINAL 1 to TERMINAL 1 of the power window SW (Front passenger’s side) to TERMINAL 2 to TERMINAL (A) 15 (Double cab), (B) 10 (Access cab) of the master SW to TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) to GROUND. This causes the power window regulator motor (Front RH) to rotate in the up direction. Up operation is continuous only while the power window control SW RH is pushed to the up side. When the window descends, the current flowing to the motor flows in the opposite direction, from TERMINAL 1 to TERMINAL 2, and the motor rotates in revers. When the window lock SW is pushed to the lock side, the ground circuit to the front RH window becomes open. As a result, even if Open/Close operation of the front RH window is tried, the current from TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) of the power window master SW is not grounded and the motor does not rotate, so the front RH window can not be operated and window lock occurs.

199 TOYOTA TACOMA (EM01D0U)

Power Window 5. Manual Operation (Rear LH, RH Window) [Double Cab] With the power window SW (Rear LH, RH) pulled to the up side, the current flowing from TERMINAL 3 of the power window SW flows to TERMINAL 1 to TERMINAL 2 of the power window regulator motor to TERMINAL 1 to TERMINAL 5 of the power window SW to TERMINAL 4 to TERMINAL (A) 13 (LH) or (A) 16 (RH) of the master SW to TERMINAL (A) 1 to GROUND and causes the power window regulator motor (Rear LH, RH) to rotate in the up direction. The up operation continues only while the power window control SW is pulled to the up side. When the window descends, the current flowing to the motor flows in the opposite direction, from TERMINAL 2 to TERMINAL 1, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the ground circuit to the rear LH, RH window becomes open. As a result, even if Open/Close operation of the rear LH, RH window is tried, the current from TERMINAL (A) 1 of the power window master SW is not grounded and the motor does not rotate, so the rear LH, RH window can not be operated and window lock occurs. 6. Key Off Power Window Operation With the ignition SW turned from on to off, the body ECU operates for about 45 seconds and current flows from TERMINAL 1 of the P/W relay to TERMINAL 2 to GROUND. For this period, current also flows TERMINAL 1 to TERMINAL 2. This current flows to TERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the power window master SW and to TERMINAL 4 (Front RH), 3 (Rear) of the power window SW. As a result, for about approx. 43 seconds after the ignition SW is turned off, it is possible to raise and lower the power window by the functioning of the body ECU. Also, by opening the door (Door courtesy SW on) within about 45 seconds after turning the ignition SW to off, a signal is input to the body ECU. As a result, the body ECU turns off, and up and down movement of the window stops. : Parts Location Code

See Page 46 (*1)

D11

48 (*2) 48 (*2)

J1 P9

P11

45 A

47 (*1)

See Page B

P10

46 (*1)

D12

Code P9

P12

Code

48 (*2)

P13

47 (*1)

P14

48 (*2)

2

See Page 24

1A

47 (*1)

48 (*2)

P16

47 (*1)

47 (*1)

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

1C 1F 1H 1I

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IC1

54

Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)

IE1

54

Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)

IK1

55

Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BA1

56 (*1)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)

BB1

56 (*1)

Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)

BF1

57 (*2)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)

BG1

57 (*2)

Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)

IL1 IL2

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

48 (*2)

P15

: Junction Block and Wire Harness Connector Code

47 (*1)

47 (*1)

: Relay Blocks Code

See Page 47 (*1)

* 4 : Separate Seat

* 5 : Bench Seat

200 TOYOTA TACOMA (EM01D0U)

: Ground Points Code IA

See Page 54

Ground Points Location Left Kick Panel

201 TOYOTA TACOMA (EM01D0U)

Door Lock Control (IG)

(BAT)

(BAT)

10A IG1 NO. 2

20A DR LCK

7. 5A ECU–B

2

R

2

16 1C

4

ECUB

18 1I

14 1I

3 1I

KSW

1

9

20 A

10 1K

18 1H 10 1F

LSWD

UL3

ACTD

23 A

3 A

LSWP 11 A

(∗2)

7 1I

GND

W–B

UL1 10

L–B

L1 12

G–B

ALTB

(∗1)

IG

B 5(A) Body ECU

6

W–R

5

G–B

W–B

W–B

B–W (∗1)

(∗2)

W–B

(∗2)

W–B

L–B

1

W–B

J 4(A), J 5(B) Junction Connector

4

L–R

W–B

15 B

(∗2)

W–B

5 B

M

W–B

5 IC3

19 A

(∗2)

W–B 9 IK3

W–B

W–B 8 IC1

5 A

W–B

D19 Door Lock Assembly (Driver' s Side)

7

W–B

9

Key Lock

2

3

10

1

Detection SW

Unlock

U1 Unlock Warning SW

1 A (∗3) 1 B (∗4)

8

9 IC3

V

5

4 IC3

Key Unlock

GR

6

8 IC3

G–B

L–W

8 A (∗3) 5 B (∗4)

(∗1)

GR

5 A 2 B

10 IC3

W–R

7 IK3

D23 Door Lock Control SW Lock

8 IK3

Unlock

6 IC3

P 9(A), (B) Power Window Master SW Lock

7 IC3

L–W

V

GR

L–W

GR

L–W

V

L–R W–B

W–B

W–B

J1 Junction Connector

5

IA

202 TOYOTA TACOMA (EM01D0U)

IC

(∗2)

W–B

6

(∗2)

W–B

1

W–B

W–B

4

W–B

W–B

W–B

∗ ∗ ∗ ∗ ∗ ∗

1 2 3 4 5 6

: w/ Door Lock Control : w/o Door Lock Control : Double Cab : Access Cab : Separate Seat : Bench Seat

B 5(A) Body ECU

ACT–

ACT+

14

16

3

2

4 1I

19 1I

5 1H

23 1H

UL2

DBKL 21 A

B–O

L2

1 1F

2 1F

4 1H

22 1H

L–B

5 IK1

10 IK1

3 BA1

(∗3)

L–R

4 IK3

L–R

L–B

5 IK3

(∗3)

P

7

IL2

3

(∗3)

(∗3)

L–B

V

B–W

L–R

13 1J

V

V

17 1I

L–R

24 1H

IL2

9 1F

3 BB1

2 BB1

B–O

F21 Front Seat Inner Belt (Driver' s Side)

(∗6)

B–O 1

1

2

1

W–B

(∗6)

M

2

W–B

D20 Door Lock Assembly (Front Passenger' s Side)

4

F22 Front Seat Inner Belt (Driver' s Side)

M

1 8

(∗3)

L–R

(∗3)

L–B

(∗3)

L–R

4

D22 Door Lock Assembly (Rear RH)

M

D21 Door Lock Assembly (Rear LH)

L–R

4

(∗3)

L–B

1

L–B

P 5

Key Unlock

6

Key Lock

Detection SW

7

V

(∗1)

L–R

B–W

2 BI2

(∗5)

2 BA1

(∗6)

B–O

(∗3)

L–B

L–R

6 IK3

(∗3)

B–W

10 IC1

(∗1)

L–R

(∗1)

10 IK3

L–R

W–B

5 W–B

J14 Junction Connector

6

(∗5)

(∗6)

W–B

W–B

1 BI2

13 W–B

W–B

W–B

W–B

2

J13 Junction Connector IE

BA

203 TOYOTA TACOMA (EM01D0U)

Door Lock Control System Outline 1. Manual Unlock Operation When the door lock control SW of the driver’s or passenger’s side door is pushed to UNLOCK, the door lock will unlock. 2. Manual Lock Operation When the door lock control SW of the driver’s or passenger’s side door is pushed to LOCK, the door lock will lock. 3. Door Key Unlock Operation ∗ Unlock operation from driver’s side door When the driver’s side door is unlocked once using the ignition key, only the driver’s side door is unlocked. If this operation is repeated within 3 seconds, all the other doors are unlocked. ∗ Unlock operation from front passenger’s side door When the front passenger’s side door is unlocked using the ignition key, all the other doors are unlocked, too. : Parts Location Code B5

See Page A

Code

44

D23

46 (*1)

D19 D20

See Page

J13

48 (*2)

J14

48 (*2)

F21

50 (*4)

46 (*1)

F22

51 (*5)

48 (*2)

J1

Code

46 (*1)

P9

45

D21

46 (*1)

J4

A

45

D22

46 (*1)

J5

B

45

U1

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1C

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1F

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

1H 1I 1J 1K

: Connector Joining Wire Harness and Wire Harness Code IC1 IC3 IK1 IK3

See Page

Joining Wire Harness and Wire Harness (Connector Location)

54

Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)

55

Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

IL2

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BA1

56 (*1)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)

BB1

56 (*1)

Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)

BI2

61 (*5)

Floor No.2 Wire and Seat No.1 Wire (Under the Front Seat LH)

: Ground Points Code

See Page

Ground Points Location

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

BA

56 (*1) 57 (*2)

* 1 : Double Cab

Floor Seat Cross Member LH * 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

204 TOYOTA TACOMA (EM01D0U)

See Page 45 45 A

47 (*1)

B

48 (*2) 45

Memo

205 TOYOTA TACOMA (EM01D0U)

Wireless Door Lock Control (BAT)

(IG)

10A HORN

(BAT)

10A IG1 NO. 2

20A DR LCK

2

W–G

2

W–G

5

5

HORN

KSW

GND

15

9

1

10 1C

10 1K

18 1H

LSWD

UL3

ACTD

20 A

23 A

3 A

2

GR

G–R

2

ALTB

L–B

IG

2

B 5(A) Body ECU

4

G–B

3

HORN Relay

1

2

W–R

2

11 1E

V

W–B

W–B

G–B

G–R

V

G–B

V

L–B

9 IC3

8

10

9

1

Key Lock

4 IC3

W–R

8 IC3

Detection SW

1

W–B

W–B

7

D19 Door Lock Assembly (Driver' s Side)

M

4

L–R

2

Key Unlock

U1 Unlock Warning SW

10 IC3

W–B

5 IC3

L–R

W–B

W–B

W–B

W–B

W–B

W–B

1

4

6

J1 Junction Connector IC

IA

206 TOYOTA TACOMA (EM01D0U)

T11 Turn Signal Flasher

∗ 1 : Double Cab ∗ 2 : Access Cab

HAZ

W

10

8 1L

B 5(A) Body ECU

25

LSWP

ACT–

ACT+

DCTY

14

16

3

2

26

4 1I

19 1I

5 1H

23 1H

2 1F

1 1F

L–R

HAZ

UL2

L2

3 BA1

2 BA1

3 BB1

2 BB1

P

L–B

L–R

L–B

L–R

L–B

L–R

7

6

5

1

4

(∗2)

G–Y (∗1)

G–Y

(∗1)

L–R

IL2

(∗1)

(∗1) (∗1)

(∗1)

(∗1)

L–B

J14 Junction Connector 8

W–B

13

M

(∗2)

G–Y

1

4

D11 Door Courtesy SW (Driver' s Side)

M

D22 Door Lock Assembly (Rear RH)

D21 Door Lock Assembly (Rear LH)

Key Unlock

Key Lock

M

1

D20 Door Lock Assembly (Front Passenger' s Side)

W–B W–B

3

2 BF1

10 IK3

5

IL2

7 1F

(∗1)

L–R

L–B

10 IK1

8

1

W–B

W–B

W–B

W–B

(∗1)

L–R

5 IK1

V

L–B L–B

4 IK3

(∗1)

P

5 IK3

(∗1)

V B–W 6 IK3

Detection SW

10 IC1

7

4

L–R

22 1H

B–W

V

4 1H

L–R

17 1I

L–R

V

24 1H

L–R

B–W

11 A

2

J13 Junction Connector IE

207 TOYOTA TACOMA (EM01D0U)

2 1 2

L

Y

R

L

6

1

BE

208

TOYOTA TACOMA (EM01D0U) (∗2)

(∗2)

P–B

ECUB

1

D16 Door Courtesy SW (Rear RH Lower Side) P–B

(∗2)

7 BF1

P–B

P–B (∗1, ∗2)

16 1I

(∗2)

9

D17 Door Courtesy SW (Rear RH Upper Side) P–B

IL1

(∗1)

P–B

PCTY RCTY ILE

20 22 7

15 1J 9 1E

6 1F

R

D7 Door Control Receiver

2

(∗2)

D18 Door Courtesy SW (Rear RH)

(∗2)

P–B

W–B

R

7. 5A ECU–B

W–B

1

(∗2)

(∗2)

P–B

2

(∗2)

1

D13 Door Courtesy SW (Rear LH Lower Side) P–B

(∗2)

(∗1)

P–B

(∗2)

R–B

R–B

B 5(A) Body ECU 16 1C

W–B

2

(∗2)

1

D14 Door Courtesy SW (Rear LH Upper Side) P–B

(∗2)

R–B

2 BG1

W–B

1

D15 Door Courtesy SW (Rear LH)

5

(∗1)

R–B

8 1I

(∗2)

W–B

D12 Door Courtesy SW (Front Passenger' s Side)

Wireless Door Lock Control (BAT)

5 +B GND

1

RDA PRG

2 3

7 A RDA

6 A PRG

IL1

7 BG1

L

2

W–B

W–B

W–B

BF

∗ 1 : Double Cab ∗ 2 : Access Cab

(BAT)

7. 5A DOME

2

W

2

4 1C

W

2 1E

OFF ON 3

W–B

DOOR 2

L

R7 Room Lamp (Center)

1

L

W–B

209 TOYOTA TACOMA (EM01D0U)

Wireless Door Lock Control System Outline Door lock control (Lock and unlock) and panic control (Theft alarm and flash) is performed by remote control, without the ignition key inserted in the door key cylinder, using low–power electrical waves emitted by a transmitter. 1. Normal Operation ∗ Lock operation When the lock SW on the transmitter is pressed, all the doors are locked. ∗ Unlock operation When the unlock SW on the transmitter is pressed once, only the driver door is unlocked. When the unlock SW is pressed again within 3 seconds, all the doors are unlocked. 2. Auto Lock Function When the door is not actually opened within 30 seconds after the door has been unlocked by the unlock SW on the transmitter, all the doors are automatically locked. If any of the following conditions are detected, the wireless door lock does not function. ∗ Any door is opened. ∗ The ignition key is inserted into the ignition SW. ∗ When the lock detection SW of all the doors are locked. 3. Wireless Door Lock Stop Function If any of the following conditions are detected, the wireless door lock does not function. Lock operation ∗ When any door is open (Door courtesy SW on) ∗ The ignition key is inserted into the ignition SW (Unlock warning SW on) ∗ Ignition SW is on Unlock operation ∗ Ignition SW is on 4. Visual Confirmation of Lock or Unlock During lock operation, when the body ECU receives a lock signal from the door lock detection SW, the turn signal light is flashed once. During unlock operation, when the body ECU receives an unlock signal from the door lock detection SW, the turn signal light is flashed twice. 5. Remote Panic Operation Panic will function when doors are locked or unlocked, open or closed. When the panic button (Transmitter) is pushed once, interior lights light up, and theft alarm and horn sounds and turn signal light, headlights and taillight flash. Then, the panic or the unlock button (Transmitter) is pushed once more, interior lights are turned off, sounding and flashing will stop. Panic will not function when ignition key is in ignition key cylinder. 6. Repeat Function If the lock detection signal in response to the output signal is not received after the body ECU has output the lock signal, the lock signal is output again. 7. Illuminated Entry Function When the body ECU detects the unlock state after the unlock operation has been made, it turns on the lights, such as the interior light for approx. 15 sec. If all the doors are locked during this operation, lighting is cancelled and the lights immediately fade out. : Parts Location Code B5

See Page A

D7 D11 D12

Code

See Page

See Page

D16

48 (*2)

J1

45

44

D17

48 (*2)

J13

45

46 (*1)

D18

46 (*1)

J14

45

48 (*2) 46 (*1) 48 (*2)

D19 D20

46 (*1)

48 (*2)

T11

45

48 (*2)

U1

45

D14

48 (*2)

D21

46 (*1)

D15

46 (*1)

D22

46 (*1)

* 3 : Regular Cab

47 (*1)

46 (*1)

48 (*2)

* 2 : Access Cab

R7

48 (*2)

D13

* 1 : Double Cab

Code

44

* 4 : Separate Seat

* 5 : Bench Seat

210 TOYOTA TACOMA (EM01D0U)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1C

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1E

28

Roof Wire and Driver Side J/B (Lower Finish Panel)

1F

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

29

Relay Wire and Driver Side J/B (Lower Finish Panel)

1H 1I 1J 1K 1L

: Connector Joining Wire Harness and Wire Harness Code IC1

See Page

Joining Wire Harness and Wire Harness (Connector Location)

54

Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)

55

Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BA1

56 (*1)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)

BB1

56 (*1)

Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)

BF1

57 (*2)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)

BG1

57 (*2)

Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)

IC3 IK1 IK3 IL1 IL2

: Ground Points Code

See Page

Ground Points Location

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

BE

57 (*2)

Inside of the Access Door LH

BF

57 (*2)

Inside of the Access Door RH

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

211 TOYOTA TACOMA (EM01D0U)

Multi Mode 4WD and Rear Differential Lock (BAT)

7. 5A GAUGE

(IG)

(ST)

7. 5A STA

10A IG1

7. 5A ECU–B

2

2 3 1J

2

2

P

P

V

(M/T)

R

(A/T)

13 1H

9 1J

6 2A

7 PF

16 1C

(M/T)

(IG)

V

12 IH1

SE

V

N 9

SI

W

R–Y

L–B

(M/T)

(∗2)

(∗1)

(M/T)

W

2

8 PB

4 DD

6 PD

4 DB

8 IH1

(M/T)

R–Y

9 IH1

L–B

(M/T)

(A/T)

G–W O

B

BR

Y

Speed Sensor (Rear)

P

L

R

Speed Sensor (Front LH, RH)

G

R–Y

36 IA1

(A/T)

IJ1

1

3

(M/T)

3 A

(M/T)

R–Y

6 A

(A/T)

2 A

W–B

R 6

R

IJ1

BR–W

7

19 A

V–W

15 B

BR–W

16 B

L–Y

14 B

(M/T)

Y

(A/T)

2

L–W

2

D6 Diode (Clutch Start)

IG+

G–W

Speed Control

1

P1 Park/Neutral Position SW

P

V1 Vehicle Speed Sensor (Combination Meter)

1 A

(M/T)

R

C 9(A), C10(B) Combination Meter

4WD

4LO

Rear Diff. Lock

21 A

5 2A

4 PA

13 1K

L–B (M/T)

12 A 18 B SP1

18 A 10 B FL+

4 A 9 B FL–

3 A 40 B FR+

17 A 39 B FR–

20 A 15 B RL+

6 A 16 B RL–

5 A 44 B RR+

19 A (∗3) 45 B (∗4)

G–W

RR–

(A/T)

S 1(A), (B) Skid Control ECU with Actuator V–W R BR–W L–Y

W–B

212 TOYOTA TACOMA (EM01D0U)

(IG)

∗ ∗ ∗ ∗

(IG)

1 2 3 4

: 1GR–FE A/T : 2TR–FE A/T : w/ VSC : w/o VSC

10A IG1 NO. 2

20A 4WD

17 1H

LG

14 1C

13 DC

LG

5 DA

V

D5 Diff. Lock SW RR DIFF LOCK

3

R–B

4

5 A

16 A

IG

R

F12(A), F13(B) 4WD Control ECU MTN 23 A

SPD

N 22 A

9 A

IND1 19 A

IND3 11 A

M1

RLP 20 A

2 A

M2

RLY1

1 A

13 A

2 PD

LG–B LG–B 2 BD1

LG–B

P P 1 BD1

LG–Y

L L 5 BD1

LG–R

LG 3 BD1

3

2

W–B

M1

6 M2

Limit SW

5 RLY1

RLY2

M 6 BD1

W–B

V–W

8 ID1

2

1 13 DB

(A/T)

L–Y

G–W

10 ID1

LG

L–B (M/T)

7 ID1

LG

7 DD

T13 Transfer Indicator SW (Rear Diff. )

5 PD

9 ID1

L–Y

2 DB

4 BD1

L–Y

L–Y

BR–W

R

V–W

(A/T)

G–W

L–B

(M/T)

L–Y

4 IB1

RLY2 21 A

GND 4

V–W

W–B

6 1D

R BR–W

D10 Diff. Lock Shift Actuator Assembly

7 BD1 18 1H

7 1D

W–B

L–Y

4 W–B

W–B

W–B

J1 Junction Connector

2

IA

213 TOYOTA TACOMA (EM01D0U)

Multi Mode 4WD and Rear Differential Lock

W–B

∗ 5 : w/ ADD

T4 Transfer Shift Actuator Assembly

W–B

A3 ADD Actuator Assembly

4

(∗5)

4

GND

GND

H2

LG

(∗5)

(∗5)

P–L

(∗5)

TL2

6

LG–B

TL3 3

DL1

5

(∗5)

TL1 5

DL2

3

B–W

TM2 1

ADD

2

R

TM1 2

DM2

1

(∗5)

L4

DM1

(∗5)

M

W–B

Limit SW

H4 M

6 2 EC1

4 EC1

5 EC1

3 EC1

6 EC1

(∗5)

LG–B

1 EC1

W–B

(∗5)

W–B

(∗5)

LG

(∗5)

(∗5)

P–L

(∗5)

B–W

R

(∗5)

L–W

L–B

L–Y

L

G

17 PB

2 B TM1

1 B

25 B

TM2

TL1

23 B TL3

24 B

3 B

TL2

DM1

4 B

(∗5)

LG–B

13 PA

26 B

DM2

12 B

ADD

13 B

DL2

DL1

F12(A), F13(B) 4WD Control ECU 2–4

L

5

2

L4 17 B

4WD 22 B

22 PA

R–L

Y–B

15 A

GR

LO

8 A

W–B

GND 6 A

H2

L4

W–B 12

1

7 PA

6 PA

8 PA

J5 Junction Connector

J14 Junction Connector

2

2

4

4

1

T2 Transfer Indicator SW (4WD Position) W–B

H4

T3 Transfer Indicator SW (L4 Position) W–B

F15 4WD Control SW

Y–B

21 PA

15

13

IE

IC

EE

(2TR–FE)

W–B

(1GR–FE)

W–B

J13 Junction Connector

W–B

2

19 PA

W–B

W–B

18 PA

EH

214 TOYOTA TACOMA (EM01D0U)

System Outline Depending on the transfer shift actuator status and ADD actuator status, the 4WD control ECU drives the transfer shift actuator and ADD actuator to electrically change the gear position selected by the driver according to vehicle speed signal and neutral start switch signal. 1. Shift Select Control Shifting from H2 into H4 position When the 4WD control switch is turned from H2 into H4, this signal is input into 4WD control ECU (TERMINAL 2–4). Then, the 4WD control ECU moves the 2–4 select motor (TERMINAL 2, TERMINAL 1) in the transfer shift actuator assembly until the shift fork shaft shifts to the diff. free position, performing a shift into H4 position Shifting from H4 into L4 position When the 4WD control switch is turned from H4 into L4, this signal is input into 4WD control ECU (TERMINAL LO). Then, the 4WD control ECU drives the 2–4 select motor (TERMINAL 2, TERMINAL 1) in the transfer shift actuator assembly, shifting the shift fork shaft, performing a shift into L4 position. Switching diff. lock ON when in L4 position. When the diff. lock switch is turned ON with the 4WD control switch in L4 position, this signal is input into the 4WD control ECU (TERMINAL R). Then, the 4WD control ECU drives the diff. lock shift actuator (TERMINAL 2, TERMINAL 3) in the diff. lock shift actuator assembly until the shift fork shaft shifts to the diff. lock position, locking it in L4 position with the diff. lock. 2. Function of Limit Switch Rear diff. lock limit switch (TERMINAL 5 and TERMINAL 6 of diff. lock shift actuator assembly) The rear diff. lock limit switch in the diff. lock shift actuator assembly feeds back the current rear diff. lock status (Free or lock) information, which is based on the ON/OFF combination of the two switches, to the 4WD control ECU. 4WD limit switch (TERMINAL 3, TERMINAL 5 and TERMINAL 6 of transfer shift actuator assembly) The 4WD limit switch in the transfer shift actuator assembly feeds back the current shift position status (H2 or H4) and diff. lock or diff. free status information, which is based on the ON/OFF combination of the three switches, to the 4WD control ECU. ADD limit switch (TERMINAL 6 and TERMINAL 5 of ADD actuator assembly) The ADD limit switch in the ADD actuator assembly feeds back the current front diff. lock or free status information, which is based on the ON/OFF combination of the two switches, to the 4WD control ECU. 3. Shift Limit Control The 4WD control ECU interrupts the shift select control and give the driver a warning by means of buzzer (Integrated into the ECU) sound and blinking indicator light on the combination meter when the following shift change conditions exist. The warning, however, can be canceled –– when the 4WD control switch is canceled and the switch position is returned to where it was before the warning occurred. ∗ Shift change from H2 into H4 with vehicle traveling at a speed reaching or exceeding 100 km/h (Buzzer sound and blinking 4WD indicator lights) ∗ Shift change from H4 into L4 with vehicle traveling at a speed reaching or exceeding 5 km/h but within the A/T shift position N range (Buzzer sound and blinking 4LO indicator light) (A/T) ∗ Shift change from H4 into L4 with vehicle traveling at a speed reaching or exceeding 3 km/h but within the clutch start SW on position (Buzzer sound and blinking 4LO indicator light) (M/T) 4. ADD Actuator Control (1GR–FE) When switching between H2 (2WD) and H4 (4WD), the 4WD control ECU controls the way power is supplied to the ADD motor in the ADD actuator assembly, as shown below, to run the ADD motor in normal or reverse direction, thereby changing the status of the front diff. from free to lock, or vice versa. For locking front diff. For unlocking front diff.

TERMINAL DM1 TERMINAL DM2 TERMINAL DM1 TERMINAL DM2

+B GROUND GROUND +B

215 TOYOTA TACOMA (EM01D0U)

Multi Mode 4WD and Rear Differential Lock : Parts Location Code

See Page

A3

Code

See Page

40 (1GR–FE)

F15

44

42 (2TR–FE)

J1

45

C9

A

44

J5

45

C10

B

44

J13

45

D5

44

J14

45

D6

44 48 (*2)

D10 F12

A

44

F13

B

44

T3 T4

43 (2TR–FE) A

49 (*3)

T2

41 (1GR–FE)

P1

46 (*1)

Code

S1 B

2

See Page 24

41 (1GR–FE)

T13

43 (2TR–FE) V1

43 (2TR–FE)

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

See Page

Junction Block and Wire Harness (Connector Location)

1C

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1D

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

24

Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1H 1J 1K 2A DA DB DC DD PA PB PD PF

: Connector Joining Wire Harness and Wire Harness Code EC1

See Page 52 (1GR–FE) 53 (2TR–FE)

Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Differential Wire (Near the Front Differential)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IB1

54

Frame Wire and Engine Room Main Wire (Left Kick Panel)

ID1

54

Frame Wire and Instrument Panel Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

56 (*1) BD1

57 (*2)

Frame Wire and Differential Wire (Near the Rear Differential)

58 (*3) * 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

41 (1GR–FE) 43 (2TR–FE) 41 (1GR–FE) 43 (2TR–FE) 48 (*2) 49 (*3)

41 (1GR–FE)

: Junction Block and Wire Harness Connector Code

43 (2TR–FE)

47 (*1)

: Relay Blocks Code

See Page 41 (1GR–FE)

* 5 : Bench Seat

216 TOYOTA TACOMA (EM01D0U)

41 (1GR–FE) 43 (2TR–FE)

: Ground Points Code

See Page

Ground Points Location

EE

52 (1GR–FE)

Rear Side of Right Bank Cylinder Block

EH

53 (2TR–FE)

Rear Side of Cylinder Block

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

IE

54

Right Kick Panel

217 TOYOTA TACOMA (EM01D0U)

Rear Differential Lock for 2WD (IG)

(IG) 10A IG1 NO. 2

20A 4WD

17 1H

LG

14 1C

13 DC

V

V–W

V–W

3

2 PD

L–Y

D5 Diff. Lock SW RR DIFF LOCK

LG

5 DA

5 PD

5

1

R

SPD

IG

7 DD

13 DB

L–Y

L–Y

4

L–Y

V–W

F14 4WD Control ECU

2 DB

10

R–B

4

RLP

GND

M1

M2

3

6

LG–B

RLY2

9

P

RLY1

L

2

LG 9 ID1

7 ID1

10 ID1

8 ID1

4 BD1

LG–B 2 BD1

LG–Y

LG–B

3

2

6

5

L–Y

2

1

W–B

P 1 BD1

T13 Transfer Indicator SW (Rear Diff. )

L 5 BD1

LG–R

6 BD1

13

M1

M2

Limit SW

RLY1

W–B

J14 Junction Connector

LG

4

3 BD1

LG

L–Y

W–B

7

L–Y

4 IB1

RLY2

M

6 1D

4 7 1D

W–B

W–B

GND

D10 Diff. Lock Shift Actuator Assembly

18 1H

7 BD1

2

J13 Junction Connector

W–B

IE

218 TOYOTA TACOMA (EM01D0U)

W–B

(IG)

(BAT)

(IG)

10A IG1

7. 5A ECU–B

7. 5A GAUGE

2

R

P

V

(M/T)

9 1J

2

3 1J

16 1C

7 PF

13 1K

4 PA

1 A

V1 Vehicle Speed Sensor (Combination Meter)

Speed Control

Rear Diff. Lock

IG+

SE

SI

2

3 A

W

(M/T)

R–Y

36 IA1

(M/T)

R–Y

(A/T)

W–B

W

6 A

R–Y

2 A

14 B

3

(M/T)

C 9(A), C10(B) Combination Meter

1

(M/T)

R

19 A

P

V–W

21 A

(M/T)

V

V–W

9 IH1

8 IH1

W–B

SP1

2 W–B

P

Y

BR

B

18 A 10 B

4 A 9 B

3 A 40 B

17 A 39 B

20 A 15 B

6 A 16 B

5 A 44 B

FL+

FL–

FR+

FR–

RL+

RL–

RR+

O

L

Speed Sensor (Rear)

R

12 A 18 B

Speed Sensor (Front LH, RH)

G

R–Y

(A/T)

L–Y

19 A (w/ VSC) 45 B (w/o VSC) RR–

S 1(A), (B) Skid Control ECU with Actuator J1 Junction Connector

4

IA

219 TOYOTA TACOMA (EM01D0U)

Rear Differential Lock for 2WD System Outline This system frees or locks the rear differential according to the position of the diff. lock SW. The differential will lock only when the transfer indicator SW (Rear diff.) is on and the vehicle speed is at 8 km/h (5 mph) or less. When the diff. lock SW is switched from OFF position to ON position, current flows to TERMINAL 4 of the 4WD control ECU. If the limit SW on the lock side inside the diff. lock shift actuator assembly is on at this time, until the limit SW is turned off, current flows from the 4WD fuse to TERMINAL 5 of the 4WD control ECU to TERMINAL 3 to TERMINAL 3 of the diff. lock shift actuator to TERMINAL 2 to TERMINAL 2 of the 4WD control ECU to TERMINAL 7 to GROUND. This drives the diff. lock shift actuator and locks the rear differential. When the rear differential locks, the transfer indicator SW (Rear diff.) turns on, lighting up the rear diff. lock indicator light in the combination meter. When the diff. lock SW is switched from ON position to OFF position, the current to TERMINAL 4 of the 4WD control ECU is cut off. If the limit SW on the free side inside the diff. lock shift actuator asesmbly is on, until the limit SW is turned off, current flows from the 4WD fuse to TERMINAL 5 of the 4WD control ECU to TERMINAL 2 to TERMINAL 2 of the diff. lock shift actuator assembly to TERMINAL 3 to TERMINAL 3 of the 4WD control ECU to TERMINAL 7 to GROUND. This drives the diff. lock shift actuator and frees the rear differential. When the rear differential is free, the transfer indicator SW (Rear diff.) and the rear diff. lock indicator light in the combination meter are turned off. The rear diff. lock indicator light flashes when: ∗ The diff. lock SW is switched to ON position during differential lock prohibition conditions (Vehicle speed above 8 km/h (5 mph) ). ∗ The transfer indicator SW (Rear diff.) is turned off during operation of the diff. lock shift actuator. : Parts Location Code C9 C10

See Page

Code

See Page

A

44

J1

45

B

44

J13

45

44

J14

45

D5

46 (*1)

A

48 (*2)

D10

S1

49 (*3) F14

B

44

Code T13

2

See Page 24

V1

43 (2TR–FE) 41 (1GR–FE) 43 (2TR–FE)

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1C

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1D

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1H 1J 1K DA DB DC DD PA PD PF

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

48 (*2) 49 (*3)

41 (1GR–FE)

: Relay Blocks Code

See Page 47 (*1)

* 5 : Bench Seat

220 TOYOTA TACOMA (EM01D0U)

41 (1GR–FE) 43 (2TR–FE)

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IB1

54

Frame Wire and Engine Room Main Wire (Left Kick Panel)

ID1

54

Frame Wire and Instrument Panel Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

56 (*1) BD1

57 (*2)

Frame Wire and Differential Wire (Near the Rear Differential)

58 (*3)

: Ground Points Code

See Page

Ground Points Location

IA

54

Left Kick Panel

IE

54

Right Kick Panel

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

221 TOYOTA TACOMA (EM01D0U)

Wiper and Washer with INT Time SW (IG)

(IG)

C12(A), C13(B) Combination SW

30A WIP

10A WSH

Wiper SW +B

+2

+S

INT1

B1

INT2 MIST

3 1B

OFF

Washer SW

INT

EW off

HI

on

Wiper Relay

LO

WF

P

15 1H

L

L

8 1B

+1

EW

WF 3 B

P

2 B

W1 Windshield Washer Motor

L–W

+S 1 A

L–R

+2 4 A

L–B

+1 3 A

L

+B 2 A

4

3

+2

+S

L–Y

L–Y

W–B

L–B

1 +1

9 IA4

5

W–B

W–B

E

2

W–B

B

L

M

W2 Windshield Wiper Motor

M 2

4 IA4

L–W

3 IA4

L–R

10 IA4

1

1

EB

222 TOYOTA TACOMA (EM01D0U)

IC

J1 Junction Connector IA

System Outline With the ignition SW turned on, the current flows to TERMINAL (A) 2 of the combination SW and TERMINAL 2 of the windshield wiper motor through the WIP fuse. The current flows to TERMINAL 1 of the windshield washer motor through the WSH fuse. 1. Low Speed Position With the wiper and washer SW turned to LO position, the current flows from TERMINAL (A) 2 of the combination SW to TERMINAL (A) 3 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshield wiper motor to run at low speed. 2. High Speed Position With the wiper and washer SW turned to HI position, the current flows from TERMINAL (A) 2 of the combination SW to TERMINAL (A) 4 to TERMINAL 4 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshield wiper motor to run at high speed. 3. INT Position With the wiper and washer SW turned to INT position, the wiper relay operates and current flows from TERMINAL (A) 2 of the combination SW to TERMINAL (B) 2 to GROUND. This activates the intermittent circuit and the current flows from TERMINAL (A) 2 of the combination SW to TERMINAL (A) 3 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND and the wiper operates. Intermittent operation is controlled by a condenser charge and discharge function in the relay. 4. Washer Continuous Operation With the wiper and washer SW pulled to on position (Washer SW ON position), the current flows from the WSH fuse to TERMINAL 1 of the windshield washer motor to TERMINAL 2 to TERMINAL (B) 3 of the combination SW to TERMINAL (B) 2 to GROUND and causes the windshield washer motor to run and the window washer to spray. Simultaneously, current flows from the WIP fuse to TERMINAL (A) 2 of the combination SW to TERMINAL (A) 3 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND, causing the wiper to function. : Parts Location Code

See Page

C12

A

44

C13

B

44

J1

Code W1

45

W2

See Page 41 (1GR–FE)

Code W2

See Page 43 (2TR–FE)

43 (2TR–FE) 41 (1GR–FE)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1B

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1H

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness Code IA4

See Page 54

Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

: Ground Points Code EB

See Page 52 (1GR–FE) 53 (2TR–FE)

Ground Points Location Front Left Fender

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

223 TOYOTA TACOMA (EM01D0U)

Wiper and Washer without INT Time SW (IG)

(IG)

15 1H

L

10A WSH

3 1B

P

8 1B

L

30A WIP

C12(A), C13(B) Combination SW Wiper SW +S MIST

Washer SW

OFF

EW off

HI

on

+1

+2

+S

3 A

4 A

1 A

EW 2 B

WF

WF 3 B

10 IA4

3 IA4

W1 Windshield Washer Motor

P

+B 2 A

L–W

LO

L–R

+2

L–B

+1

L

+B

4 IA4

1 M

1

4

3

+1

+2

+S

L–Y

L–Y

W–B

L–B

L–R

L–W

2

9 IA4

5

W–B

W–B

E

2

W–B

B

L

W2 Windshield Wiper Motor

M

1

EB

IC

224 TOYOTA TACOMA (EM01D0U)

J1 Junction Connector IA

System Outline With the ignition SW turned on, the current flows to TERMINAL (A) 2 of the combination SW and TERMINAL 2 of the windshield wiper motor through the WIP fuse. The current flows to TERMINAL 1 of the windshield washer motor through the WSH fuse. 1. Low Speed Position With the wiper and washer SW turned to LO position, the current flows from TERMINAL (A) 2 of the combination SW to TERMINAL (A) 3 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshield wiper motor to run at low speed. 2. High Speed Position With the wiper and washer SW turned to HI position, the current flows from TERMINAL (A) 2 of the combination SW to TERMINAL (A) 4 to TERMINAL 4 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshield wiper motor to run at high speed. 3. MIST Position With the wiper SW turned to MIST position, current flows from TERMINAL (A) 2 of the combination SW to TERMINAL (A) 3 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshield wiper motor to run at low speed. 4. Washer Continuous Operation With the wiper and washer SW pulled to washer position (Washer SW ON position), the current flows from the WSH fuse to TERMINAL 1 of the windshield washer motor to TERMINAL 2 to TERMINAL (B) 3 of the combination SW to TERMINAL (B) 2 to GROUND and causes the windshield washer motor to run and the window washer to spray. Simultaneously, current flows from the WIP fuse to TERMINAL (A) 2 of the combination SW to TERMINAL (A) 3 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND, causing the wiper to function. : Parts Location Code

See Page

C12

A

44

C13

B

44

J1

Code W1

45

W2

See Page 41 (1GR–FE)

Code W2

See Page 43 (2TR–FE)

43 (2TR–FE) 41 (1GR–FE)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1B

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1H

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness Code IA4

See Page 54

Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

: Ground Points Code EB

See Page 52 (1GR–FE) 53 (2TR–FE)

Ground Points Location Front Left Fender

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

225 TOYOTA TACOMA (EM01D0U)

Shift Lock (IG)

(ACC)

10A IG1

(BAT)

7. 5A ACC

(IG) 10A IG1 NO. 2

10A STOP

2 10 1J

14 1C

P

LG

2

(∗1)

9 1J

13 DC 7 PF

GR

∗ 1 : w/ VSC ∗ 2 : w/o VSC 12 DC

LG

(∗1)

P

(∗1)

G–W

G–W

10 PE

Shift Lock Solenoid

2

2 1B

6 1C

L

W–B

K3 Key Interlock Solenoid

1

2

W–B

5 DD

14 DB

L

W–B

15 B

21 A

J 4(A), J 5(B) Junction Connector

22 A

IC

226 TOYOTA TACOMA (EM01D0U)

(∗1)

SLS–

2

G–B

SLS+

2

2

L

L L

STP 7

3

4

1

(∗2)

KLS+ 12

L–W

E 8

1

L

S7 Shift Lock Control ECU

5

(∗1)

2

ACC

IG

(∗1)

6

S10 Stop Lamp SW

1

2

STOP LP CTRL Relay

2

System Outline When the ignition SW is turned to ACC position the current from the ACC fuse flows to TERMINAL 6 of the shift lock control ECU. When the ignition SW is turned to ON position, the current from the IG1 fuse flows to TERMINAL 1 of the shift lock control ECU. 1. Shift Lock Mechanism If the brake pedal is depressed with the ignition SW set at ON (The stop lamp SW is on), the shift lock control ECU is activated, allowing the driver to change the shift lever to a position other than the P position. 2. Key Interlock Mechanism With the ignition SW at ON or ACC position, when the shift lever is put in P position, the current flowing from TERMINAL 12 of the shift lock control ECU to key interlock solenoid is cut off. This causes the key interlock solenoid to turn off (Lock lever disengages from LOCK position) and the ignition key can be turned from ACC to LOCK position. : Parts Location Code

See Page

Code

See Page

J4

A

45

K3

45

J5

B

45

S7

45

Code S10

See Page 45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1B

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1J

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

DB

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1C

DC DD PE PF

: Ground Points Code IC

See Page 54

Ground Points Location Instrument Panel Brace RH

227 TOYOTA TACOMA (EM01D0U)

Remote Control Mirror (ACC)

7. 5A ACC

GR

16 1J

O1 Outer Mirror SW

8

Operation SW

Right/ Down

Left/ Up

MRH

MRV

2

4

3

LG–R

P–B

LG–B

MLV

5

P–G

MLH

RH

M+

E

6

7

W–B

LH

Select SW

MV

RH

BR–W

MH LH

Down

Up

Left

Right

B

12 PF

BR–W

3 IK3

3 IC3

P–B

2

3

2

3

MH

MV

MH

MV

M

M

M

M

M+ 1

M+

O3 Outer Rear View Mirror (RH)

1 BR–W

W–B

BR–W

O2 Outer Rear View Mirror (LH)

BR–W

BR–W

2 IK3

BR–W

LG–B

1 IK3

LG–B

LG–R

2 IC3

LG–R

1 IC3

P–G

P–B

11 PF

P–G

5 PF

6

J1 Junction Connector IA

228 TOYOTA TACOMA (EM01D0U)

: Parts Location Code

See Page

J1

45

O1

45

Code O2

See Page

Code

46 (*1)

O3

48 (*2)

See Page 46 (*1) 48 (*2)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1J

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

PF

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IC3

54

Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)

IK3

55

Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

: Ground Points Code IA

See Page 54

* 1 : Double Cab

Ground Points Location Left Kick Panel

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

229 TOYOTA TACOMA (EM01D0U)

Automatic Glare–Resistant EC Mirror (IG)

10A IG1 NO. 2

LG

8 1E

7 IG

I8 Inner Rear View Mirror

E

W–B

6

13 1E

W–B

8 1D

W–B

18 1H

4

J1 Junction Connector IA

BD

230 TOYOTA TACOMA (EM01D0U)

: Parts Location Code

See Page

I8

Code

46 (*1)

I8

See Page

Code

48 (*2)

J1

See Page 45

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1D

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

1E

28

Roof Wire and Driver Side J/B (Lower Finish Panel)

1H

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

: Ground Points Code IA BD

See Page 54 56 (*1) 57 (*2)

* 1 : Double Cab

Ground Points Location Left Kick Panel Near the Rear Differential

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

231 TOYOTA TACOMA (EM01D0U)

Seat Belt Warning (IG)

∗ 1 : Separate Seat ∗ 2 : Bench Seat

(IG)

7. 5A GAUGE

10A IG1

3 1J

V

P

9 1J

7 PF

21

Driver' s Seat Belt

P

13 PF

3

PBEW

10

GR–B

8

B–O

W–B

2

Front Passenger Seat Belt Warning Light

H7 Hazard Warning Signal SW Assembly

Blink

Buzzer

C9 Combination Meter

IG+

2

IL1

GR

1 1J

9 1F IL1

PBEW FSP+ 12 C

FSP– 13 C G–B(∗2)

(∗2)

G–B

(∗2)

G–R

G–B

(∗1)

BGND

(∗2)

FSR–

BSW

B

13

1

G–B

(∗2)

12

FSR+

2

BGND 14

(∗2)

(∗1)

B

2

5

11

(∗2)

BSW

5 BJ2

P–G

4 FSR–

10 1F

G–R

(∗1)

G–B

(∗1)

G–R 8

FSR+

9

4 BJ2

O10 Occupant Classification ECU

(∗1)

6 BH1

(∗1)

W–B

5 BH1

P–G

W–B

(∗1)

1

O5 Occupant Classification ECU

(∗2)

1 BI2

(∗1)

G–R

G–R(∗2)

W–B

(∗2)

1

W–B

13 A

2

F21 Front Seat Inner Belt (Driver' s Side)

F22 Front Seat Inner Belt (Driver' s Side) W–B

2

A21(A), A23(C) Airbag Sensor Assembly Center

B–O

(∗2)

B–O

2 BI2

(∗1)

(∗2)

B–O

GR

1

1

W–B

2

4

W–B

W–B

18 1H

J1 Junction Connector IA

BA

F25 Front Seat Inner Belt (Front Passenger' s Side)

232 TOYOTA TACOMA (EM01D0U)

F24 Front Seat Inner Belt (Front Passenger' s Side)

System Outline When the driver has not fastened the seat belt while the ignition SW is ON, the driver seat belt warning light blinks, and a warning buzzer comes on. Also, in the front passenger seat, a sensor recognizes passenger, and when the passenger has not fastened the seat belt, the front passenger seat belt warning light blinks. : Parts Location Code

See Page

Code

See Page

Code

See Page

A21

A

44

F22

51 (*5)

J1

45

A23

C

44

F24

51 (*5)

O5

50 (*4)

C9

44

F25

50 (*4)

O10

51 (*5)

F21

50 (*4)

H7

45

: Junction Block and Wire Harness Connector Code 1F 1H 1J PF

See Page

Junction Block and Wire Harness (Connector Location)

28

Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IL1

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BH1

60 (*4)

Floor Wire and Seat No.1 Wire (Under the Front Passenger’s Seat)

BI2

61 (*5)

Floor No.2 Wire and Seat No.1 Wire (Under the Front Seat LH)

BJ2

61 (*5)

Floor Wire and Seat No.1 Wire (Under the Front Seat RH)

: Ground Points Code IA

See Page 54

Ground Points Location Left Kick Panel

56 (*1) BA

57 (*2)

Floor Seat Cross Member LH

58 (*3) * 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

233 TOYOTA TACOMA (EM01D0U)

Accessory Meter (BAT)

(IG)

(BAT)

(IG)

10A IG1 NO. 2

50A J/B

7. 5A ECU–B

7. 5A GAUGE

2

2

2

3 1J

L

2

R

6 1A

V–W

3

TAIL Relay

1

10A TAIL

13 PE

16 1C

2 PD

13 1K

5

V–W

R

V

5 1E

V–W

8 1E

LG

6 1E

G

4

1

3

19

1

21

ILL+

IG+

Speed Control

C9 Combination Meter

TEMP– 6

W

10 1E

(M/T)

GR

3 1E

3

R–Y

Y

13 1E

6

R–Y

W–B

2

(M/T)

5

(A/T)

TEMP+

E 2

S1

A28 Accessory Meter

2

14 1K

W(M/T)

36 IA1

Speed Sensor (Front LH, RH)

(A/T)

R–Y

W–B

Y

R–Y(M/T)

1 1C

GR

3 1C

W–B

W–B

8 1D 18 1H

SP1

L

18 A 10 B

4 A 9 B

3 A 40 B

FL+

FL–

FR+

P

R

12 A 18 B

G

A13 Ambient Temp. Sensor

2

17 A (w/ VSC) 39 B (w/o VSC) FR–

1

S 1(A), (B) Skid Control ECU with Actuator

2 W–B

BD

J1 Junction Connector

4

IA

234 TOYOTA TACOMA (EM01D0U)

(IG)

10A IG1

P

(M/T)

9 1J

7 PF

P

1 IG+

SE

SI

R–Y

W

3

(M/T)

2

9 IH1

(M/T)

V1 Vehicle Speed Sensor (Combination Meter)

(M/T)

4 PA

8 IH1

W(M/T) R–Y(M/T)

BR

B

20 A 15 B

6 A 16 B

5 A 44 B

RL+

RL–

O

Y

Speed Sensor (Rear)

19 A (w/ VSC) 45 B (w/o VSC)

RR+

RR–

S 1(A), (B) Skid Control ECU with Actuator

235 TOYOTA TACOMA (EM01D0U)

Accessory Meter : Parts Location Code

See Page

A13

Code C9

44

42 (2TR–FE)

J1

45

46 (*1)

A28

See Page

40 (1GR–FE)

S1

48 (*2)

A

Code S1

41 (1GR–FE)

See Page B

V1

43 (2TR–FE)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1A

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1D

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

1E

28

Roof Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1C

1H 1J 1K PA PD PE PF

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

: Ground Points Code IA BD

See Page 54 56 (*1) 57 (*2)

* 1 : Double Cab

Ground Points Location Left Kick Panel Near the Rear Differential

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

236 TOYOTA TACOMA (EM01D0U)

41 (1GR–FE) 43 (2TR–FE) 41 (1GR–FE) 43 (2TR–FE)

Memo

237 TOYOTA TACOMA (EM01D0U)

Horn (BAT) ∗ 1 : Double Horn Type

10A HORN

2

W–G

2

W–G

2

1

2

3 HORN Relay

2

5

2

GR

G–R

2

10 1C

G–R

22 1I

GR (∗1)

8

1

H6 Horn (Low)

Horn SW

S8 Spiral Cable

HO

238 TOYOTA TACOMA (EM01D0U)

1

H5 Horn (High)

: Parts Location Code

See Page 41 (1GR–FE)

H5

43 (2TR–FE)

Code H6

See Page 41 (1GR–FE)

Code S8

See Page 45

43 (2TR–FE)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1C

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1I

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

239 TOYOTA TACOMA (EM01D0U)

Power Outlet for 115V (IG)

(BAT) 10A IG1 NO. 2

(ST)

7. 5A STA

100A AC SKT

2

B

2

LG

(M/T)

V

1 2D

(A/T)

14 1C

LG

2

V–W

6 2A

C14 Cruise Control Clutch SW

1 3 2B

V

V–W V–W

V

B–W B–W

2 A

OUT

SPD

V 8(A), V 9(B) Voltage Inverter 400W

P/T

AC1

1 A

5 A

2 BC2

1 BC2

2 IM1

7 IM1

3 IM1

3

11 A

PGND 1 B

1 BC1

R

L

G–B

L

1 ED1

L

P8 Power Point Socket

L

2 IA4

1

3

ACC1

ACC2

GND

W–B

5

W–B

3 BC2

BC

240 TOYOTA TACOMA (EM01D0U)

W–B

W–B

L

L

AC2

3 A

LG

3

REDR 7 A

LG

+B

R–W

3

2 B

L

9 A

R–W

L

NSW

G–B

R

6 A

CCCL

R

2

6 IM1

L

6

V

8 A

IND–

3

(M/T)

L–B

5

5 IM1

(A/T)

L–B

B 3

L

AC SKT Relay

1

2

G–B

M2 Main SW (Power Outlet AC115V)

IND+

IND

(M/T)

LG–B

1

LG LG

4 B

9 IM1

10 IM1 3

ELS2 12 A (1GR–FE) 20 B (2TR–FE)

(A/T)

9 PF

1 PF 5 DB

E 7(A), (B) Engine Control Module

18 PB

15 PE

10 DD

11 DA

E

(A/T)

L–B L–B

LG

14 DC

LG

(M/T)

40 IA1

(M/T)

LG 13 DC

(M/T)

2

(IG)

(BAT)

7. 5A GAUGE

(IG)

7. 5A ECU–B

10A IG1

2 9 1J

R

P

5 PE

16 1C

7 PF

2 PD

13 1K

4 PA

V–W

R

V–W

19

1

P

SE

R–Y

(M/T)

W

SI 3

(M/T)

V1 Vehicle Speed Sensor (Combination Meter) 3

W

R–Y

36 IA1

(M/T)

R–Y

IG+

(A/T)

6

W–B

2

1

2

(M/T)

C9 Combination Meter

Speed Control

21

(M/T)

V

V–W

2

(M/T)

3 1J

9 IH1

8 IH1

L

FL+

RL–

FR+ RR+

20 A 15 B

6 A 16 B

5 A 44 B

B

RL+

FL–

P

R

3 A 40 B

17 A (w/ VSC) 39 B (w/o VSC) FR– RR– 19 A (w/ VSC) 45 B (w/o VSC)

O

G

4 A 9 B

BR

SP1

18 A 10 B

Y

R–Y

S 1(A), (B) Skid Control ECU with Actuator

12 A 18 B

Speed Sensor (Rear)

W–B 2

(A/T)

Speed Sensor (Front LH, RH)

J1 Junction Connector IA

241 TOYOTA TACOMA (EM01D0U)

Power Outlet for 115V : Parts Location Code

See Page

C9

44

C14

44

E7

A

44

B

44

J1

45

M2

45

Code

See Page

P8 S1 V1

Code

47 (*1) 48 (*2) A

41 (1GR–FE)

B

43 (2TR–FE)

See Page

V8

A

V9

B

41 (1GR–FE) 43 (2TR–FE)

: Relay Blocks Code

See Page

Relay Blocks (Relay Block Location)

2

24

Engine Room R/B (Engine Compartment Left)

3

23

Engine Room R/B No.2 (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1C

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

2B

24

Engine Wire and Engine Room J/B (Engine Compartment Left)

2D

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1J 1K

DA DB DC DD PA PB PD PE PF

: Connector Joining Wire Harness and Wire Harness Code ED1 IA1

See Page 52 (1GR–FE) 53 (2TR–FE)

Joining Wire Harness and Wire Harness (Connector Location) Frame No.2 Wire and Engine Room Main Wire (Front Fender Apron RH)

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

IM1

55

Floor No.3 Wire and Instrument Panel Wire (Under the Console Box)

IA4

BC1 BC2

56 (*1) 57 (*2)

Frame No.2 Wire and Floor No.3 Wire (Floor Seat Cross Member RH)

56 (*1) 57 (*2)

: Ground Points Code IA BC

See Page 54 56 (*1) 57 (*2)

* 1 : Double Cab

Ground Points Location Left Kick Panel Near the Voltage Inverter

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

242 TOYOTA TACOMA (EM01D0U)

47 (*1) 48 (*2) 47 (*1) 48 (*2)

Memo

243 TOYOTA TACOMA (EM01D0U)

Cigarette Lighter and Power Outlet for 12V (BAT)

(ACC) 15A PWR OUTLET

7. 5A ACC

3

1 ACC SKT Relay 2

B E 1

W–B

W–B

2

W–B

E 1

W–B

LG B

18 1H

W–B

2

C6 Cigarette Lighter

11 1K

P7 Power Point Socket

4 1K

LG

5

4

J1 Junction Connector

1

IA

244 TOYOTA TACOMA (EM01D0U)

: Parts Location Code

See Page

C6

Code

44

J1

See Page 45

Code P7

See Page 45

: Junction Block and Wire Harness Connector Code 1H 1K

See Page 29

Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

: Ground Points Code IA

See Page 54

Ground Points Location Left Kick Panel

245 TOYOTA TACOMA (EM01D0U)

Trailer Towing for Trailer Socket 7P Type (BAT)

(BAT)

(BAT) 30A TOWING TAIL

30A BATT CHG

2

50A J/B

2

2 2

2

L

2

L

G

5

1

3

2

3

1 2

1

3

2

5

2

G–B

2

GR

W–B

2

5

TAIL Relay

2

2

2

10A TAIL

2

TOWING TAIL Relay

BATT CHG Relay

2

19 1J

6 1A

L

L

B–Y

LG

19

7 1C

9 IB1

B 5(A) Body ECU

TRLY 18 IB1 V

TAIL

G–B

5 BE1

4 BE1

G

GR

13 A

1 TAIL

18 T

T12 Trailer Socket

33 2A

32 2A

IJ1

G

G

2 BATT

C11 Combination SW Light Control SW

27 2A

B

W–B

8

GND

STTR

STTL

B/UP

BRK

6

5

3

4

7

H

EL

OFF Tail Head

R

Y

L

2 BE1

7 BE1

8 BE1

W–B

L–R

L–O

R–W

W–B

BR 1 BE1

J 4(A), J 5(B) Junction Connector

W 3 BE1

W–B

W–B

12

6 A

5 B Y R–W L–O L–R W–B

EA

EB

W–B

8 1D

18 1H

BD

246 TOYOTA TACOMA (EM01D0U)

W–B

W–B

W–B

W–B

LG

IC

W–B

(BAT)

(IG) 30A TOWING BRK

(BAT)

10A IG1

(BAT)

30A TOWING

2

15A TRN–HAZ

2 2

2

B–Y

GR

P

2

L

B

G

1 1L

P

2 13 1H

L

T11 Turn Signal Flasher 1 IA4

LR 3

B 6

3 1L

2 1L

4 1L

5 DD

9 1C

18 1C

4 1B

13 DD

L

B–Y

LL 5

B–Y

P

1

L–Y

IG

2

L–B

P1 Park/Neutral Position SW B1 Back–Up Lamp SW Y

12 IH1

L–Y

1

9

3

8

+B

LTIN

RTIN

STIN

L

GR

L–B

6 IH1

R–W

13

J2 Junction Connector

R–W

1

4

2

R–W

B

5

L

G

1 ID2

4

RTOT

4

2

L–R

LTOT

6

W–B

8 ID2

GND

10 IB1

11 IB1

L–R

3

L–O

GND

L–O

BRK 1

T8 Towing Converter Relay

STOP

W–B

+B

Y

T7 Towing Brake Controller

TAIL

Y R–W L–O L–R W–B LG

LG

3 W–B

J1 Junction Connector

4

IA

247 TOYOTA TACOMA (EM01D0U)

Trailer Towing for Trailer Socket 7P Type ∗ 1 : w/ VSC ∗ 2 : w/o VSC (IG)

(BAT) 10A IG1 NO. 2

10A STOP

2 2

LG

14 1C

L 13 DC

4

3

STPO 16 A

L

STP2

(∗2)

45 A

L

(∗1)

L

(∗1)

L

2

(∗1)

L

2

(∗1)

G–B

L

(∗1)

L

1

S 1(A) Skid Control ECU with Actuator

2

2

S10 Stop Lamp SW

5

(∗1)

STOP LP CTRL Relay

1

2

(∗2)

G–W

2

2

2 1B

(∗1)

LG

6 1C 10 1I

G–W

12 DC

(∗1)

5 DC

LG

L

LG

248 TOYOTA TACOMA (EM01D0U)

: Parts Location Code

See Page

B1 B5

A

Code

See Page

Code

See Page

40 (1GR–FE)

J4

A

45

S10

45

42 (2TR–FE)

J5

B

45

T7

45

41 (1GR–FE)

T8

45

43 (2TR–FE)

T11

45

44

C11

44

J1

45

J2

45

P1 S1

A

41 (1GR–FE)

T12

43 (2TR–FE)

47 (*1) 48 (*2)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code

See Page

Junction Block and Wire Harness (Connector Location)

1A 1B

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

28

Frame Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

1L

29

Relay Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

1C 1D 1H 1I 1J

DC DD

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA4

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IB1

54

Frame Wire and Engine Room Main Wire (Left Kick Panel)

ID2

54

Frame Wire and Instrument Panel Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

BE1

56 (*1)

Frame No.3 Wire and Frame Wire (Behind the Trailer Socket)

57 (*2)

: Ground Points Code EA EB

See Page 52 (1GR–FE) 53 (2TR–FE) 52 (1GR–FE) 53 (2TR–FE)

Ground Points Location Front Right Fender Front Left Fender

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

BD

56 (*1) 57 (*2)

* 1 : Double Cab

Near the Rear Differential * 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

249 TOYOTA TACOMA (EM01D0U)

Clock (ACC)

(BAT)

7. 5A ACC

(BAT)

50A J/B

7. 5A DOME

2

2

2

2

L

20 1J

W

6 1A

1

5

2

TAIL Relay

GR

4 1C

3

3 1K

W

10A TAIL

14

13

ACC

B 12 A Clock

G

W–B

W–B

20 B

G

ILL+ 11

W–B

E 7

1

J13 Junction Connector IE

IL1

W–B

11

BB

250 TOYOTA TACOMA (EM01D0U)

J 4(A), J 5(B) Junction Connector

H7 Hazard Warning Signal SW Assembly

G

7 1J

: Parts Location Code

See Page

H7 J4

Code

45 A

J5

45

See Page B

J13

Code

See Page

45 45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1A 1C 1J 1K

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness Code IL1

See Page 55

Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and Floor Wire (Right Kick Panel)

: Ground Points Code IE

See Page 54

Ground Points Location Right Kick Panel

56 (*1) BB

57 (*2)

Floor Seat Cross Member RH

58 (*3) * 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

251 TOYOTA TACOMA (EM01D0U)

Tire Pressure Warning System (IG) 10A IG1 NO. 2

D4 Data Link Connector 3

14 1C

LG

V–W TC 13

SIL 7

P–B

W

13 DC

2 DA

10 DA

9 DA

18 DB

W

V–W

12

4

3

SIL

SPD

TC

G

12 IE1

13 IE1

14 IE1

23 IA1

G

1

4

+5V

RDA

GND

1

SET

5

T15 Tire Pressure Warning SW (Reset)

GR

11

GR

10

L–W

CLSW

16

L–W

GND2

7

R–W

RDA

8

R–W

RF5V

W–B

IG

GND

IND 6

L

T14 Tire Pressure Monitor ECU

2

P–B

LG

4 DA

4

L

7

J5 Junction Connector

5

2

W–B

W–B

T16 Tire Pressure Monitor Receiver

EB

IJ1

IC

252 TOYOTA TACOMA (EM01D0U)

(IG)

(BAT)

(IG)

7. 5A GAUGE

7. 5A ECU–B

10A IG1

2 2

9 1J

R

P

V–W

(M/T)

3 1J

10 PF

16 1C

7 PF

2 PD

13 1K

1

V1 Vehicle Speed Sensor (Combination Meter)

Speed Control

Tire Pressure

IG+

SE

2

6

3

3

W

8 IH1

(M/T)

R–Y

(M/T)

R–Y

(A/T)

9 IH1

L

R–Y

(M/T)

W 23

SI

2

Reverse

C9 Combination Meter

1

(M/T)

R

21

P

V

19

(M/T)

V–W

4 PA

SP1

L

P

Y

BR

B

18 A 10 B

4 A 9 B

3 A 40 B

17 A 39 B

20 A 15 B

6 A 16 B

5 A 44 B

FL+

FL–

FR+

FR–

RL+

RL–

RR+

O

R

12 A 18 B

Speed Sensor (Rear)

G

R–Y

Speed Sensor (Front LH, RH)

(A/T)

L

W–B

36 IA1

19 A (w/ VSC) 45 B (w/o VSC) RR–

S 1(A), (B) Skid Control ECU with Actuator

2

J1 Junction Connector IA

253 TOYOTA TACOMA (EM01D0U)

Tire Pressure Warning System System Outline The air pressure sensor installed in the tire wheel detects the tire air pressure and transmits signals to the vehicle side receiver. When the detected tire air pressure is below a specified level, the warning light in the combination meter comes on to inform the driver. Press the tire pressure warning SW (Reset) for 3 seconds with the ignition SW at ON position after the tire pressure is adjusted to the specified value. It will lead the tire pressure monitor ECU to control and warn the pressure according to the specified value. Warnings when the tire pressure is low ∗ When the tire air pressure is below a specified level, the warning light in the combination meter comes on. : Parts Location Code

See Page

C9

44

D4

44

J1

45

J5 S1

A

Code

See Page A

S1

B

Code

43 (2TR–FE) 41 (1GR–FE)

T16

43 (2TR–FE)

45

T14

45

41 (1GR–FE)

T15

45

2

See Page 24

V1

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1C

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

34

Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

DC

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

PA

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

1J 1K DA DB

PD PF

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IE1

54

Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

: Ground Points Code EB

See Page 52 (1GR–FE) 53 (2TR–FE)

Ground Points Location Front Left Fender

IA

54

Left Kick Panel

IC

54

Instrument Panel Brace RH

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

48 (*2) 49 (*3)

: Relay Blocks Code

See Page 47 (*1)

* 5 : Bench Seat

254 TOYOTA TACOMA (EM01D0U)

41 (1GR–FE) 43 (2TR–FE)

Memo

255 TOYOTA TACOMA (EM01D0U)

Audio System for Separate Type Amplifier R 1(A), R 3(D) Radio Receiver Assembly (BAT)

(ACC)

30A RADIO NO. 2

(BAT) 10A RADIO NO. 1

7. 5A ACC

B

ACC

1 A

MUTE

11 A

TX– 15 A

GR

L–Y

2

6 1J

2 A

1 A

R–W

O

V

L–Y

6 IA4

J 4(A), J 5(B) Junction Connector

11 B

GR

W–L

2

W–L

37 IA1 IL3

R–W

IL3

12 A

1 A

8 A

7 A

S15 Speaker (Front Door LH)

GND

14 B

15 B

W

5 BA1

10 BA1

5 BB1

10 BB1

Y

R

IL3

R

10

Y

IL3

11 IE1

1 IE1

–

1

2

S16 Speaker (Front Door RH)

R

1

L

P

2

2

–

+

1

LG

–

3 +

V

+ 2

S19 Speaker (Tweeter LH)

4 –

RR–

TX–

L

V

3 +

RR+ 5 B

W

6 IK1

11

B

1 IK1

LG

11 IC1

P

12 IC1

4

RL– 13 B

TX+

B

IL3

L

8

LG

IL3

V

9

RL+ 4 B

B

LG

P

V IL3

P

17

FR– 18 B

MUTE

Y

FR+ 7 B

S20 Speaker (Tweeter RH)

FL– 17 B

L

FL+

ACC

BR

S23(A), S24(B) Stereo Component Amplifier

+B2

1

16

O

W–L 10 B

IL3

IL3

1

2

S17 Speaker (Rear Door LH)

W

W–L 1 B

6 B

7

GR

13

+B

IL3

V

W–L

GR

IL3

GR

12

18

5 A

2

2

2

TX+

7 A

1

2

S18 Speaker (Rear Door RH)

BB

256 TOYOTA TACOMA (EM01D0U)

15

IL3

4

SWG

4

5

EAU

AU2

4 A

R+

R–

WFL–

WFR+ 3 B

6 A SGND

WFR– 12 B

E 16 B

Seek–

Volume+

MODE

S8 Spiral Cable

5 A

L–

11 B

Y–B

W–R

6 AU1

Steering Pad SW

2 A

L+

S23(A), S24(B) Stereo Component Amplifier

3 A

WFL+

8 D

IL3

Seek+

2 B

SW2

6 D

LH

IL3

SW1 7 D

V–W

B 6

GND 20 A

W

IL3

B

14

G

R

IL3

SGND 10 A

BR

R– 18 A

W

R+ 8 A

G

L– 19 A

BR

L–R

L–B

G–W

Volume–

1

2

4

1

3

WF+

WF–

WF+

WF–

IL3

BR

S21 Speaker (Woofer) BR

BR

5

(Shielded)

L+ 9 A

R

(Shielded)

R 1(A), R 3(D) Radio Receiver Assembly

ID

257 TOYOTA TACOMA (EM01D0U)

Audio System for Separate Type Amplifier : Parts Location Code

See Page

Code

See Page

J4

A

45

S15

47 (*1)

Code

See Page

S20

47 (*1)

J5

B

45

S16

47 (*1)

R1

A

45

S17

47 (*1)

S23

A

47 (*1)

R3

D

45

S18

47 (*1)

S24

B

47 (*1)

45

S19

47 (*1)

S8

S21

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1J

See Page 29

Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness Code IA1

See Page

Joining Wire Harness and Wire Harness (Connector Location)

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IC1

54

Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)

IE1

54

Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)

IK1

55

Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

IL3

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BA1

56 (*1)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)

BB1

56 (*1)

Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)

IA4

: Ground Points Code

See Page

Ground Points Location

ID

54

Instrument Panel Brace RH

BB

56 (*1)

Floor Seat Cross Member RH

* 1 : Double Cab

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

258 TOYOTA TACOMA (EM01D0U)

47 (*1)

Memo

259 TOYOTA TACOMA (EM01D0U)

Audio System for Built–in Type Amplifier (BAT) ∗ ∗ ∗ ∗ ∗

10A RADIO NO. 1

7. 5A ACC

6 1J

: w/ Door Lock Control : w/o Door Lock Control : Double Cab : Access Cab : w/ Audio SW in Steering Wheel

Volume–

Steering Pad SW

2

1 2 3 4 5

GR

L–Y

2

Volume+

LH

(ACC)

Seek–

Seek+

MODE

S8 Spiral Cable

37 IA1

EAU

AU2

6

4

5

FR+

LG 1 IK1 2 IK2

S15 Speaker (Front Door LH)

(∗5)

Y–B

(∗5)

W–R

RR–

1 C

3 C

GND 7 B

W

8

IL2

4

IL2

Y

R

5 BA1 4 BF1

10 BA1 5 BF1

5 BB1 4 BG1

W

B

BR

Y 1 IE1

R

B 11 IE1

L +

10 BB1 (∗3) 5 BG1 (∗4)

–

2

S16 Speaker (Front Door RH)

Y(∗4)

B(∗4) 1

2

S17 Speaker (Rear Door LH)

1

2

BR

1

W(∗3)

1

2

L(∗2)

V(∗1)

LG(∗2)

2

–

R(∗3)

– 1

RR+

6 C

3 +

LG

+ 2

S19 Speaker (Tweeter LH)

4 –

RL–

2 C

6 IK1 (∗1) 1 IK2 (∗2)

LG

L(∗2)

V(∗1)

P(∗1)

3 +

RL+

5 B

SW2

L

V 11 IC1 1 IC2

LG(∗2)

P 12 IC1 2 IC2

4

FR–

1 B

8 D

SWG

S20 Speaker (Tweeter RH)

FL– 6 B

6 D

SW1

L

FL+ 2 B

1

7 D

B

W

ACC

P(∗1)

R 1(B), R 2(C), R 3(D) Radio Receiver Assembly

4 B

R

3 B

(∗5)

V–W

L–Y

AU1

S18 Speaker (Rear Door RH)

ID

260 TOYOTA TACOMA (EM01D0U)

: Parts Location Code

See Page

Code

See Page

R1

B

45

R2

C

45

R3

D

45

49 (*3)

45

47 (*1)

S8

S16

S17

47 (*1) 48 (*2)

S15

Code

47 (*1)

S18

49 (*3)

See Page 47 (*1)

48 (*2)

S19

48 (*2) 49 (*3) 47 (*1)

48 (*2)

S20

47 (*1)

48 (*2) 49 (*3)

48 (*2)

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1J

See Page 29

Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness Code IA1 IC1 IC2 IE1 IK1 IK2

See Page

Joining Wire Harness and Wire Harness (Connector Location)

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

54

Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)

54

Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)

55

Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

IL2

55

Instrument Panel Wire and Floor Wire (Right Kick Panel)

BA1

56 (*1)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)

BB1

56 (*1)

Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)

BF1

57 (*2)

Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)

BG1

57 (*2)

Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)

: Ground Points Code ID

See Page 54

* 1 : Double Cab

Ground Points Location Instrument Panel Brace RH

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

261 TOYOTA TACOMA (EM01D0U)

8 IH1

262

TOYOTA TACOMA (EM01D0U) B–W

11 A 18 A 17 A

16 B

2 B

17 B

B–W

GR–B

2 B

7 PF

4 PA ODO/TRIP

9 A

1 B

Illumination

C 9(A), C10(B) Combination Meter

B–W

11 A

(∗2)

R–W

12 A

(∗2)

1 A

Tacho Control

Temp. Control

G–B

V–W

Back–Up Lamp SW

Unlock Warning SW

T14 Tire Pressure Monitor ECU

2

B–W

GR–B

6 A

GR–B

J 4(A), J 5(B) Junction Connector

R

Door Courtesy SW (Driver' s Side)

16 1C

(M/T)

G–Y

2

R

7. 5A ECU–B

Data Link Connector 3

9 IH1

R–Y

3 A

(A/T)

Speed Control

2

(M/T)

18 A

R–Y

7. 5A GAUGE

R–Y

2 21 A

W

3 1J

Skid Control ECU with Actuator

SE

(M/T)

Door

V

9 1J

G–W

P (M/T)

10A IG1

V

Battery SI

(IG)

A/C Amplifier

Engine Control Module

W

3

W

1 2C

(M/T)

5

P

3

(M/T)

W

R

R

(IG)

(M/T)

Body ECU

R–Y

2

(M/T)

V1 Vehicle Speed Sensor (Combination Meter)

B

HEAD Relay

Combination Meter R

R

(BAT)

3

SPD

2

10 PF

1 13 1K

1

IG+

7 A

9 B 10 B

Reverse

2

11 B

TOYOTA TACOMA (EM01D0U) 20 A 23 A

L

A27 Accessory Meter

2

3 10A TAIL

5

C 9(A), C10(B) Combination Meter 13 A

J 4(A) Junction Connector

3

Tire Pressure Monitor ECU

Tire Pressure

1

G

5 1E

BR–W

L

12 A

12 PC

Rheostat

33 A

LG

TAIL Relay

5 PE 6 1A

(∗1)

14 1K

LG

BRAKE

5 PD

V–W

E7 Engine Control Module

SI

(∗1)

Reverse

13 PE

B 2(B) Brake Fluid Level Warning SW

3

ABS

2 PD SPD

(∗1)

W–B

2 4 A

B–W

5 ID2

Reverse

8 A

O

Fuel Control

Reverse

6 IM1

V–W

8

Skid Control ECU with Actuator

10 A

SRS

V–W

V–W

V8 Voltage Inverter SPD

B–Y

Y–B

2 ID2

Y–B

Fuel

V–W

2

Airbag Sensor Assembly Center

O

19 A

O

Blink

Driver' s Seat Belt

V–W

SPD 9 A (4WD) 10 B (2WD)

F19 Fuel Suction Pump and Gage Assembly

Front Seat Inner Belt (Driver' s Side)

B–O

Buzzer

F12(A), F14(B) 4WD Control ECU R R

R R

(BAT)

50A J/B

2 G

7 1J

V–W 40 A

22 IA1

1 B

2 B

∗ 1 : w/o VSC ∗ 2 : 1GR–FE M/T

EB

263

E3 Engine Oil Pressure SW

1

3 IH1

Oil Pressure

4WD

4LO

Rear Diff. Lock

16 A 25 A 15 B 16 B 14 B 17 A

LG–B

R

BR–W

L–Y

BR

P

AUTO LSD

Slip

VSC TRAC

VSC OFF

DAC

39 A 24 A 35 A 36 A 38 A 37 A 13 B

264

TOYOTA TACOMA (EM01D0U) Skid Control ECU with Actuator

(∗7)

L–B

(w/ VSC)

L–W

(w/ VSC)

Y

(w/ VSC)

R–W

(∗8)

2

LG–R

2

CRUISE

DIM Relay

LG

2

(∗5)

Y–B

1

A/T OIL TEMP

Malfunction Indicator Lamp

Charge

GR

2

Engine Control Module

4WD Control ECU

4WD Control ECU

LG–B

Generator

MAINT REQD

(∗3)

W

R

R

Combination Meter R W(∗3)

R R–B

2

3 4

5

2 R–B

C 9(A), C10(B) Combination Meter

∗ ∗ ∗ ∗ ∗ ∗

W(∗3) R–B

2

1

L–W

R–W

G–B

Park/Neutral Position SW

Shift Lock Control ECU Y(∗6)

B(∗5)

Park/Neutral Position SW R–Y(∗6)

(∗5)

G–Y

W

32 A

8 B

7 B

6 B

5 B

4 B

3 B

2 B

1 B

(∗5)

P

R

N

D

4(∗5) 3(∗6)

3(∗5) 2(∗6)

2(∗5) L(∗6)

Head (∗3) Tail (∗4)

L

High Beam

Turn RH

(∗3)

2 A

C 9(A), C10(B) Combination Meter

W–B

Turn LH

(∗3)

(∗3)

(∗4)

(∗3)

12 B

(∗3)

R–B

35 IA1

R–B

P 20 IA1

Y(∗5)

19 2A

G–Y(∗6)

R–B

2 2A

(∗3)

P

22 2A

P

L–Y

1 2A

(∗3)

Turn Signal Flasher

2

2

V(∗5)

2

2

L–B

Shift Lock Control ECU

10A HEAD (LO RH)

10A HEAD (HI LH)

27 A

: USA : Canada : 1GR–FE A/T : 2TR–FE A/T : w/ Downhill Assist Control : w/ Auto LSD

2

1

28 A

3 4 5 6 7 8

2

J1 Junction Connector IA

265 TOYOTA TACOMA (EM01D0U)

Combination Meter : Parts Location Code

See Page

A27

Code

44

J4 J5

F12

A

44

42 (2TR–FE)

F14

B

44

B

C9

A

44

C10

B

44

Code

44

40 (1GR–FE)

B2

F19 J1

45

B

45

V1

48 (*2) 49 (*3)

42 (2TR–FE)

See Page A

T14

46 (*1)

40 (1GR–FE)

E3

See Page

E7

V8

45

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1A 1C 1E 1J 1K

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

28

Roof Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2A

24

Engine Room J/B (Engine Compartment Left)

2C

24

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

PA

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

PC PD PE PF

: Connector Joining Wire Harness and Wire Harness Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IA1

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

ID2

54

Frame Wire and Instrument Panel Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

IM1

55

Floor No.3 Wire and Instrument Panel Wire (Under the Console Box)

: Ground Points Code EB IA

See Page 52 (1GR–FE) 53 (2TR–FE) 54

* 1 : Double Cab

Ground Points Location Front Left Fender Left Kick Panel

* 2 : Access Cab

* 3 : Regular Cab

* 4 : Separate Seat

* 5 : Bench Seat

266 TOYOTA TACOMA (EM01D0U)

45 41 (1GR–FE) 43 (2TR–FE) 47 (*1) 48 (*2)

Memo

267 TOYOTA TACOMA (EM01D0U)

Air Conditioning LG (IG)

10A IG1

(BAT)

(IG) 10A IG1 NO. 2

50A HEATER

2 2

LG

LG

P

A15(A), A16(B) A/C Control Assembly

14 1C

R

9 1J

OFF 11 DC

LO

Blower SW

13 DC

M1 M2

2 DD

R

LG

HI

2

2 M2

3 A

4 A

L–B

4

HI

2 A

W–L

1

Y

LO

5

M1 7 A

3

2

2

2

G–Y

HEATER Relay

2

Y

Y

B–Y

B–Y

W–B

34 IA1

3

4

8 IA4

33 2A

B4 Blower Resistor

29 2A

B–Y

M2

HI 2

2

W–B

M

M1

LO 1

B3 Blower Motor

1

W–L

W–L

W–L

W–B

W–L B–Y

EA

W–B

W–B

P

EB

268 TOYOTA TACOMA (EM01D0U)

LG

LG L–W V

V

L–W

G–B

G–B

GR

4 B

2 B

12 B ACID

1 B MR/F

A/C

A/C SW

A15(A), A16(B) A/C Control Assembly

F/R SW

F/R

A/C

REC

IG+

MSET

10 B

5 B

LG–B

W–B

W–B

AMSW 6 B

P

GND 9 B

R–W

BGND 6 A

1

2

4

GND

A/M

IG

P

P

W–B

W–B

LG–B 1 PE

14 PF 8 PE

7 PF

9 PE

P

P

Amplifier

P

M

W–B

D2 Damper Servo Motor (Air Mix)

W–B

P W–B

W–B

W–B

W–B

W–B

B–Y

B–Y

P

3

4

1 2

J13 Junction Connector

W–B

W–B

IE

269 TOYOTA TACOMA (EM01D0U)

Air Conditioning LG

LG L–W V

E2 Engine Coolant Temp. Sensor

1

G–B GR

2

28 A

THW

E2

ACT

V–W

11

10

V

L–W

L

G–W

IJ1

G–B

3

GR

II1

P–B

G–W

24 D

18

17

15

16

7

9

ACID

FRS 1

AC1

25 D

5

MR/F

REC 2

L

E 4(A), E 7(D) Engine Control Module

21 A (∗1) 32 A (∗2)

A/C

D1 Damper Servo Motor (Air Inlet)

BR

Y–B

M

RDEF

ACT

AC1

REC

FRS

GND

VER1

PRS

23

1

14

5

12

3

(∗1)

W–B

32 IA1

W–B

33 IA1

G–Y

LG–B

O

BLRH

2

LG

IG+

G–Y

DEF

12

P

A14 A/C Amplifier

P

4

3

1 O

2 IG

MODE

DEF

GND 2 2

13

M 1

J14 Junction Connector

2 P

W–B

1

B–Y

W–B

P5 Pressure SW

2

10A A/C

D3 Damper Servo Motor (Air Vent Mode)

Amplifier

W–B

B–Y

W–B

EA

270 TOYOTA TACOMA (EM01D0U)

LG (BAT)

(IG)

LG

7. 5A ECU–B

LG

7. 5A GAUGE

2 2

5 MG CLT Relay

1

R

2

3 1J

2

2

R

∗ 1 : 1GR–FE ∗ 2 : 2TR–FE

9 1K

16 1C

3 2

2

G

V

V

V

3 EA1

R

24

31 IA1

G

R

13 1K

1

21

21 B

MGC

A14 A/C Amplifier Tacho Control

Temp. Control

C9 Combination Meter

6

R–W

LOCK

B

TE 4

W

SG 3

B–W

7

9

2

11 A

17 B

2 B

GR–B

1

A/C Lock Sensor

2

W–B

GR–B

18 A

J 4(A), J 5(B) Junction Connector

B–W V 1

B–W

R–W 2

A1 A/C Compressor

A17 A/C Thermistor No. 1

10 IH1

A/C Magnetic Clutch

IGN 22

GR–B

TW 19

W

W

3 PE

4 PE

10 PB

W–B

W

3

2

J1 Junction Connector IA

271 TOYOTA TACOMA (EM01D0U)

Air Conditioning System Outline The A/C amplifier receives various signals, I.E., the engine RPM from the engine control module and coolant temperature from the engine control module, etc. When the engine is started and the A/C SW (A/C control assembly) is on, a signal is input to the A/C amplifier. As a result, current flows from IG1 NO.2 fuse to TERMINAL 2 of the MG CLT relay to TERMINAL 1 to TERMINAL MGC of the A/C amplifier to GROUND, turning the MG CLT relay on, so that the magnetic clutch is on and the A/C compressor operates. If the integration control and panel detects the following conditions, it stops the air conditioning: ∗ Evaporator outlet air temperature is too low. ∗ There is a marked difference between the compressor speed and the engine speed. ∗ The refrigerant pressure is abnormally high or abnormally low. ∗ The engine speed is too low. ∗ Rapid acceleration occurs. : Parts Location Code

See Page

A1 A14

Code

See Page

Code

See Page

40 (1GR–FE)

C9

44

42 (2TR–FE)

D1

44

J4

A

45

44

D2

44

J5

B

45

D3

44

J13

45

40 (1GR–FE)

J14

45

A15

A

44

A16

B

44

E2

A17

44

B3

44

E4

A

44

B4

44

E7

D

44

J1

42 (2TR–FE)

45

P5

: Relay Blocks Code 2

See Page 24

Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector Code 1C 1J 1K 2A DC DD PB PE PF

See Page

Junction Block and Wire Harness (Connector Location)

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

24

Engine Room J/B (Engine Compartment Left)

34

Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

36

Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

36

Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

: Connector Joining Wire Harness and Wire Harness Code EA1 IA1

See Page 52 (1GR–FE) 53 (2TR–FE)

Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)

54

Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IH1

55

Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

II1

55

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

IJ1

55

Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

IA4

272 TOYOTA TACOMA (EM01D0U)

41 (1GR–FE) 43 (2TR–FE)

: Ground Points Code EA EB

See Page 52 (1GR–FE) 53 (2TR–FE) 52 (1GR–FE) 53 (2TR–FE)

Ground Points Location Front Right Fender Front Left Fender

IA

54

Left Kick Panel

IE

54

Right Kick Panel

273 TOYOTA TACOMA (EM01D0U)