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Service Information Document Title:

Function Group:

Information Type: Service Information

Date: 10/08/2009

Profile: EXC, EC210B LC (Volvo) [GB]

V-ECU (MID187) Vehicle control unit, passive measuring conditions

Figure 1 Passive resistance measurement against cable harness, vehicle control unit (V-ECU) disconnected Conditions 1) Control unit disconnected 2) Multi-pin breaker box connected against cable harness

NOTE NOTE

For measuring resistance, the following applies:

For measuring voltage, the following applies: 3b) Turn start switch to the OFF position, turn master switch to the OFF position and

3a) Turn master switch to the ON position, measure the resistance with the multimeter.

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turn start switch to the ON position and measure the voltage with the multimeter.

NOTE

During all resistance measurements, the master switch must be turned OFF.

4)Engine off Abbreviation

Explanation Direct voltage in volts (V)

U Ubat

Battery voltage

Ulow

Voltage near to 0 volt or 0 volt

R

Resistance in ohm (Ω)

V-ECU Passive measuring Pin JA1 JA2 JA3 JA4 JA5 JA6 JA7 JA8 JA9 JA10 JA11 JA12 JA13 JA14 JA15 JA16 JA17 JA18 JA19 JA20 JA21 JA22 JA23 JA24 JA25 JA26 JA27 JA28 JA29 JA30 JA31

Signal / component Contronics key “V” Contronics clock Preheater indicator Not connected MA9102, power shift proportional valve ground Not connected FU25, fuse for auxiliary proportional valve

Measuring points

Correct value

Miscellaneous See active measuring. See active measuring. See active measuring.

JA5 - JA32

R ≈ 15–20 Ω

See active measuring.

Not connected

RE3701, EMS power cut off relay Rotary switch ground

JA13 - JB8

R ≈ 315 Ω ± 10 %

Not connected Float position pilot pressure JA17 - JB8 switch SW9103, travel speed selection switch SE9101, attach pilot pressure switch Safety lever switch Not connected SW2704, emergency RPM control and stop switch (EMS power check) SW9104, quickfit switch Contronics key “#” Contronics key “>” Contronics data Coolant level indicator Coolant temperature indicator Not connected MA9101, flow control JA30 - JA56 proportional valve ground Not connected

See active measuring. See active measuring. See active measuring. See active measuring.

See active measuring. See active measuring. See active measuring. See active measuring. See active measuring. See active measuring. See active measuring. R ≈ 15–20 Ω

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JA32 JA33 JA34

MA9102, power shift proportional valve signal FU25, fuse for proportional valve VECU status

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JA32 - JA5

R ≈ 15–20 Ω See active measuring.

JA34 - JB8

R ≈ 320–345 KΩ

FU27, fuse for conflux shut off MA9107, power boost solenoid valve MA9105 / MA9106, conflux shut off solenoid valve

JA36 - JB8

R ≈ 20–30 Ω

JA37 - JB8

R ≈ 10–15 Ω

JA38

RE9102, travel motor relay

JA38 - JB8

R ≈ 315 Ω ± 10 %

JA39

SW2701, engine speed control switch

JA39 - JA14

R ≈ 46.5–47.5 KΩ

JA40 JA41

Not connected

JA35 JA36 JA37

JA42 JA43

SW9105, quickfit switch (confirm) SE9103, travel pilot pressure switch

JA44

SW2702, Power max mode select switch

JA45 JA46

Not connected

JA47 JA48 JA49 JA50 JA51 JA52 JA53 JA54 JA55

JA57 JA58

Not connected

JA59

Float position solenoid valve

JA62 JA63 JA64 JA65 JA66 JA67 JA68 JA69 JA70

See active measuring. JA44 - JB8

R ≈ 0 Ω (power max mode select switch: ON only)

See active measuring.

R ≈ 2.89–2.91 KΩ See active measuring. See active measuring. See active measuring.

Not connected MA9101, flow control proportional valve signal

JA61

See active measuring.

SW2704, emergency RPM JA47 - JB8 control and stop switch (IVS) Contronics key "*” Contronics enable Not connected Air cleaner indicator Float position indicator

JA56

JA60

See active measuring.

JA56 - JA30

R ≈ 15–20 Ω

JA59 - JB8

R ≈ 20–30 Ω

FU27, fuse for power boost solenoid valve RE3101, battery relay cut off signal SW9101, flow control switch signal

See active measuring. See active measuring. See active measuring.

Not connected SE9102, hammer pilot pressure switch SW2703, auto idle select switch MA9117, hammer selection solenoid valve (hammer select check) (option) Float position switch SW9109 / SW9110, Rotator switch, left / right (option)

See active measuring. See active measuring.

See active measuring. See active measuring. -------------------------------------

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JB3 JB4 JB5

---------------------------------------- --------------SW9107, boost / hammer / shear selecting switch SW3301, engine start key (R2) Not connected J1587 B (white color) Shield ground (J1939)

JB6

CAN L (J1939 L, green color) JB6 - JB14

R ≈ 60 Ω

JB7 JB8

Battery ground Battery ground SW3301, engine start key (ACC) Not connected Rotary switch power (option) J1587 A (red color) Shield ground (J1587) CAN H (J1939 H, yellow JB14 - JB6 color) Battery +24 V Battery +24 V

JB1 JB2

JB9 JB10 JB11 JB12 JB13 JB14 JB15 JB16

-------See active measuring. See active measuring. See active measuring.

See active measuring. See active measuring. See active measuring. R ≈ 60 Ω See active measuring. See active measuring.

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