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Test readings, control moduleconnections

Test readings, control module connections


The following pages contain data and instructions for measuring voltage levels on the ICE control module.

Remember:


• All readings should be obtained with the use of a Breakout Box (BOB) connected between the control module and the control module connector.

• Several voltage levels should be regarded as guiding values only. Use your common sense when judging whether a particular reading is correct or not.

• If a test reading is wrong, consult the wiring diagram to find out which cables, connectors or components should be checked further.

• Page references in the table indicate the page on which the principle of operation of the signal in question is described.

• All test readings are with the engine at normal operating temperature.

• Unless otherwise stated, the ignition should be switched on.

• Specified readings are for calibrated Fluke 88/97.


Pin

Component/Function

Test conditions

Input/Output

Test reading

Between

1

LH DIRECT. INDIC.

Direction indicators activated

Output

12/0 V

1-70

2

Not used









3

RH parking lights

Parking lights activated

Output

12 V

3-70

4

LH parking lights, power supply

Parking lights activated

Input

12 V

4-70

5

Coolant temperature sensor



Input

about 0-12 V

5-58

6

RH brake light

Brake pedal depressed

Output

12 V

6-70

7

Relay, rear wiper

Rear wiper activated

Output

12/0 V

47-7

8

Dipswitch relay

Main beam activated

Output

12 V

47-8

9

Relay, radiator fan, high speed

Radiator fan, high speed, activated

Output

12 V

47-9

10

Idling speed increase signal

Idling speed increase activated

Output

12 V

47-10

11

AC

AC activated

Output

12 V

11-70

12

Relay, radiator fan, low speed

Radiator fan, low speed, activated

Output

12 V

47-12

13

Relay, electrically heated rear seat

Electrically heated rear seat activated

Output

12 V

47-13

14

Coolant temperature signal (main instrument display panel 2)



Output/ PWM

about 122 Hz 8-92%% duty

14-70

15

Rear window washer switch

Rear washer button depressed

Input

12 V

15-70

16

Parking lights switch

Parking lights activated

Input

12 V

16-70

17

Extra fog lights switch

Switch, extra fog lights, activated

Input

12 V

17-70

18

LH direction indicator switch

LH direction indicator switch activated

Input

12 V

18-70

19

RH direction indicator switch

RH direction indicator switch activated

Input

12 V

19-70

20

Seat-belt warning switch

Seat belt not in

Input

12 V

47-20

21

Hazard flasher switch

Hazard flasher switch activated

Input

12 V

47-21

22

Pressure switch, AC fan

If pressure switch not closed, > 15 bar

Input

12 V

47-22

23

Interior lighting

Interior lighting on

Output

12 V

47-23

24

Power supply, direction indicators

Always

Input

12 V

24-70



Pin

Component/Function

Test conditions

Input/Output

Test reading

Between

25

Power supply, brake lights (brake light switch)

Brake pedal depressed

Input

12 V

25-70

26

High-level brake light

Brake pedal depressed

Output

12 V

26-70

27

LH parking lights

Parking lights activated

Output

12 V

27-70

28

Power supply, RH parking lights

Parking lights activated

Input

12 V

28-70

29

LH brake lights

Brake pedal depressed

Output

12 V

29-70

30

Dipswitch

Hold dipswitch in shift position

Input

12 V

30-70

31

"Door open" indicator lamp

Door open

Output

12 V

47-31

32

Relay, electrically heated seats

Door open or ignition on

Output

12 V

47-32

33

Relay, headlamps

Headlamps activated

Output

12 V

47-33

34

Power supply, +15

Ignition, drive position

Input

12 V

34-70

35

Relay, electrically heated rear window

Electrically heated rear window on

Output

12 V

47-35

36

Not used









37

SID module communication



Output

about 8 V

37-70

38

Windscreen/headlamp washer switch

Windscreen washer activated

Input

12 V

38-70

39

Switch, intermittent wipe, front

Intermittent wipe activated

Input

12 V

39-70

40

Lights switch, headlamps

Lights switch in position 2

Input

12 V

40-70

41

Power supply, +54

Ignition switch in drive position

Input

12 V

41-70

42

Not used









43

Switch, electrically heated rear seat

Keep switch depressed

Input

12 V

43-70

44

Driver's door

Driver's door closed Driver's door open

Input

0 V 12 V

47-44

45

Parking switch Wiper motor, front

Wipers in parked position

Input

12 V

47-45



Pin

Component/Function

Test conditions

Input/Output

Test reading

Between

46

Reading lamps

Always

Output

12 V

47-46

47

Power supply, +30

Always

Input

< 0.5 V

B+ -47

48

RH direction indicators

RH direction indicators activated

Output

12/0 V

48-70

49

Not used









50

Not used









51

Not used









52

Not used









53

Signal ground

Engine running

Input

< 0.1 V

53-batt

54

Not used









55

Relay, extra fog lights

Extra fog lights activated

Output

12 V

47-55

56

Seat belt warning lamp

Lamp on Lamp off

Output

12 V 0 V

47-56

57

Not used









58

Coolant temperature sensor, grounded side

Always

Input

12 V

47-58

59

Relay, windscreen wiper

Intermittent wipe activated

Output

12/0 V

47-59

60

Diagnosis

Scan tool not connected Scan tool connected + contact with ICE

Input/Output

0 V 12 V

60-70

61

Coolant temperature signal (main instrument display panel 1)



Output

500 Hz 8-92%% duty

61-70

62

Rear wiper, intermittent operation

Rear intermittent wipe activated

Input

12 V

62-70

63

Lights off

Dipswitch in position 0

Input

12 V

63-70

64

AC

AUTO on ACC or AC activation

Input

12 V

64-70

65

Power supply B

Key in position B

Input

12 V

65-70

66

REAR WINDOW HEATER

Electrically heated rear window switch activated *)

Input

12 V

66-70

67

Passenger doors

All passenger doors closed One open

Input

0 V 12 V

47-67

68

Not used









69

Pressure switch, AC

Pressure switch closed > 22 bar

Input

12 V

47-69

70

Power ground

Engine running

Input

< 0.1 V

70-batt



*) ACC: Sends only one 100 ms current pulse which can be measured with a maximum value indicating instrument.