ECM (page 2 of 4)

ENGINE MANAGEMENT SYSTEM - SIEMENS

18-4-10 DESCRIPTION AND OPERATION

Connector C0331 Pin Details

Connector C0332 Pin Details

Pin No.

Description

Input/Output

1 to 3

Not used

–

4

Engine cooling fan control

Output

5 and 6

Not used

–

7

APP sensor earth 2

–

8

APP sensor signal 2

Input

9

APP sensor supply 2

Output

10

Fuel pump relay coil

Output

11

Not used

–

12

APP sensor earth 1

–

13

APP sensor signal 1

Input

14

APP sensor supply 1

Output

15 to 19

Not used

–

20

DMTL pump motor

Output

21

Alternator load sensing

Input

22

Vehicle speed

Input

23

VIS balance valve position feedback

Input

24

Brake pedal sensor, Brake Lamp Switch (BLS) signal

Input

25

Not used

–

26

Ignition sense

Input

27

Cruise control MFL signal

Input

28

Brake pedal sensor, Brake Test Switch (BTS) signal

Input

29

A/C compressor clutch relay coil

Output

30

DMTL change-over valve

Output

31

Not used

–

32

Diagnostic ISO 9141 K line

Input/Output

33

Immobilisation ECU

Input

34

VIS power (butterfly) valves position feedback

Input

35

Not used

–

36

CAN bus high

Input/Output

37

CAN bus low

Input/Output

38

Thermostat monitoring sensor earth

–

39

Thermostat monitoring sensor signal

Input

40

Not used

–

Pin No.

Description

Input/Output

1

Ignition coil 5

Output

2

Ignition coil 3

Output

3

Ignition coil 1

Output

4

Not used

–

5

Ignition earth

–

6

Not used

–

7

Ignition coil 4

Output

8

Ignition coil 6

Output

9

Ignition coil 2

Output