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Electronically Controlled Suspension

TP78165-1

Volvo Bus Corporation Service Training

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5 3 22

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3 1

Electronically Controlled Suspension TP78165-2

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Volvo Bus Corporation Service Training

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1 13 6 6 4

12

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5 8 P

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11 6 9 3

10 6

2 1

Electronically Controlled Suspension TP78165-3

Volvo Bus Corporation Service Training

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9 6

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Electronically Controlled Suspension TP78165-4

Volvo Bus Corporation Service Training

ECU

+5.0 V 0.0 V

+1V 2.5 _

4 Analogue Inputs from Chassis Height Senders

Sender Voltage Supply

Voltage Supply

+24 V

Pressure Sensor Kneeling Kneeling Levelling 2nd ECU Auxiliary

C3(B7)

Up to 6 Digital Inputs from Switches

Speed Signal Input

Electronically Controlled Suspension TP78165-5

Microprocessor and Memories (RAM, EPROM, EEPROM)

ISO Diagnostics

Power Stages for Solenoid Valves and Lamps

Volvo Bus Corporation Service Training

Electronically Controlled Suspension TP78165-6

Volvo Bus Corporation Service Training

3.3 V

Max. + 80 mm

0 mm

2.5 V

Min. - 80 mm

1.7 V

Electronically Controlled Suspension TP78165-8

Volvo Bus Corporation Service Training

Electronically Controlled Suspension TP78165-9

Volvo Bus Corporation Service Training

P

A B

R 0

1 R

C

1

2

2 3

D

3

1 2 DNR

S BRAKE

P 1 0 80

OIL

3

4

5

6 7

1/2

100

60

120

40

2

turbo F

E

P

24

125 km / h 2

4

6

0

8

2 10

0

4

6 8

10

22

26

28

30 32

r / min x 100 km

2*1

0 0 0 0 0 0 0

P

O

C 1

Start

P

Electronically Controlled Suspension TP78165-10

Volvo Bus Corporation Service Training

A

R 0

1 R

1

2

2

B

3

3

C

Electronically Controlled Suspension TP78165-11

Volvo Bus Corporation Service Training

Sensor

+24V

Sensor

+24V

125 km / h

km

125 km / h

0 0 0 0 0 0 0

2*1

0 0 0 0 0 0 0

Tachograph

Speedometer

C3 (B7) Electronically Controlled Suspension TP78165-12

C3

Volvo Bus Corporation Service Training

Sensor

Sensor

_ +

_ + Speedometer

Tachograph

VECU

VECU

C3

Electronically Controlled Suspension TP78165-13

CECM

C3

CECM

Volvo Bus Corporation Service Training

1

3 22

21

1

2

3 1

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Volvo Bus Corporation Service Training

21

21 35 34 3 4 1 42a

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41 3

1 41 3

42 22

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21 22 35 4 3 34

43 22

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1 42a

42

41 3

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35 21 22 4 1

1 41 3

42 22

43

41 3

42 22

43

35 21 22 4

21 22 35 4 3 34

43 22

21

21 35 34 3 4

Electronically Controlled Suspension TP78165-15

Volvo Bus Corporation Service Training

21

21 35

35

34

21

3

22

4

4

1

43

42a

42

41

41

3

3

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43

22

34

4

3

35

21 22

22

1

21

21 35 34 3 4 1 43

42a

42

22

Electronically Controlled Suspension TP78165-16

35 21 22 4 1

41

41

3

3

42

43

22

Volvo Bus Corporation Service Training

21

21 35

35

34

21

3

22

4

4

1

43

42a

42

41

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3

3

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21 22 35 4 3 34

22

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21 35 34 3 4 1

43

42a

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35 21 22 4 1

41

41

3

3

42

43

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Volvo Bus Corporation Service Training

Electronically Controlled Suspension TP78165-18

Volvo Bus Corporation Service Training

1

2

3

Electronically Controlled Suspension TP78165-19

Volvo Bus Corporation Service Training

2 1

8

4

3

2

1

P

4

8

5 6

P

P

10

Electronically Controlled Suspension TP78165-20

Volvo Bus Corporation Service Training

Electronically Controlled Suspension TP78165-21

Volvo Bus Corporation Service Training

CUSTOMER PARAMETER PROGRAMMING

DATASET PROGRAMMING

Electronically Controlled Suspension TP78165-22

DIAGNOSIS AND TESTING

SELECT ECU ADRESS

LANGUAGE OPTION

Volvo Bus Corporation Service Training

DIAGNOSIS AND TESTING

Inputs/outputs and Controls

ERROR MEMORY PULSE

Electronically Controlled Suspension TP78165-23

Volvo Bus Corporation Service Training

+0.16 V

2.50 V

-0.16 V

Electronically Controlled Suspension TP78165-24

Volvo Bus Corporation Service Training

A = Sensor FL = 2.38 V

A = Sensor FL = 2.50 V

C D B

1

A

A

5

3 2

Electronically Controlled Suspension TP78165-25

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Volvo Bus Corporation Service Training