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Test readings, control module connections

Test readings, control module connections


Scope

The following pages contain readings and directions for measuring signals/levels on the Trionic control module.

Keep in mind:


• Note the measuring conditions, use common sense when considering the measurement results.

• The specified values are with the ignition in the ON position unless otherwise stated.

• First, check that the control module is supplied with power and that it is grounded.

• Then check all the inputs and signals from other systems.

• Finally, check the control module outputs. Remember that the test readings do not indicate whether the actuator is working.







• If any measured value is incorrect, use the wiring diagram to diagnose which leads, connections or components that should be checked further.

• Specified values refer to calibrated Fluke 88/97.

• The measured values %(+) and ms(+) indicate the pulse ratio and pulse length of the signal respectively. A test instrument with pulse ratio respective pulse width measuring capacity must be used. The sign indicates positive trigger pulse, TRIG+.



> = greater than ; < = less than ; ∼ = alternating current. Pins without further comments have no connections. (LP: LOGIC PROBE P=select pulse; p=visible pulses).

Pin

Colour

Component/Function

In/Out

Test conditions

Across + -

Value

1

PK/WH

+30

in

Idling speed

B+ to 1

<0.5 V

2

GN/BK

Boost pressure control valve

out

Idling speed

2 - 25

90 Hz 17.5 % (-) 1.9 ms (-) (LP HI LO)

3

GN/WH

Injector 1

out

Idling speed

3 - 25

7.5 Hz 2.5-4.5 ms (-) (LP HI LOp)

4

GN/WH

Injector 2

out

Idling speed

4 - 25

7.5 Hz 2.5-4.5 ms (-) (LP HI LOp)

5

VT/WH

Injector 3

out

Idling speed

5 - 25

7.5 Hz 2.5-4.5 ms (-) (LP HI LOp)

6

GY/WH

Injector 4

out

Idling speed

6 - 25

7.5 Hz 2.5-4.5 ms (-) (LP HI LOp)

9

OG/BK

Trigger 1

out

Idling speed

9 - 25

7.5 Hz 8.3% (-) 11 ms (-) (LP HI LOp)

10

GN/YE

Trigger 2

out

Idling speed

10 - 25

7.5 Hz 8.3% (-) 11 ms (-) (LP HI LOp)

11

BU/RD

Trigger 3

out

Idling speed

11 - 25

7.5 Hz 8.3% (-) 11 ms (-) (LP HI LOp)

12

GY/RD

Trigger 4

out

Idling speed

12 - 25

7.5 Hz 8.3% (-) 11 ms (-) (LP HI LOp)

13

OG/WH

Engine torque limitation

in



13 - 25

B+

Gear

13 - 25

0 V

14

BK/WH

DRIVE

in

P, N

14 - 25

0 V

R, D, 1, 2, 3

14 - 25

B+

15

VT

Brake light switch

in

brake pedal not depressed

15 - 25

0 V

brake pedal depressed

15 - 25

B+

17

YE/BN

Combustion cyl. 1+2

in

Idling speed

17 - 25

15-30 Hz (LP LO HIp)

18

BN/RD

Combustion cyl. 3+4

in

Idling speed

18 - 25

15-30 Hz (LP LO HIp)

20

PK

Manifold absolute pressure signal

out



20 - 67

1.0 V (A somewhat lower reading may be obtained at high altitude.)

22

BU/BN

Manifold absolute pressure sensor

in



22 - 67

100 kPa= 1.9 V see also tech. data

23

GN

Oxygen sensor 1

in

Idling, warm engine and >1 min. since start

23 - 47

0.1-0.9 V

24

BK

Main ground

in

Idling speed

24 - B-

<0.1 V

25

BK

Main ground

in

Idling speed

25 - B-

<0.1 V

26

BU

Boost pressure control valve

out

1000-1500 rpm

26-25

90 Hz 17.5 % (-) 1.9 ms (-) (LP P HI LO)

27

YE/GY

EVAP canister purge valve

out

Idling with warm engine

27 - 25

1.3 V 8 Hz 10 % (-) 12 ms (-) ( HI LOp)

28

GN

EVAP canister close valve

out



28 - 25

B+

Activate with Tech 2

28 - 25

0 V

31

BU/GY

Main relay

out



31 - 25

B+

start the engine

31 - 25

<0.5 V

32

YE/GN

CHECK ENGINE

out



32 - 25

<0.5 V

engine running and CHECK ENGINE lamp off

32 - 25

B+

33

GY/BK

Diagnosis

in/out

33 - 25

B+

36

BU/WH

Cruise Control

in



36 - 25

approx. 10 V

CC engaged

36 - 25

<0.5 V

39

PK/BK

Speed signal

in

lift front right wheel, rotate wheel 1/2 rps

39 - 25

15 Hz 50 % (LP HIp LOp)

41

YE

Crankshaft position sensor

in

Idling speed

41 - 67

5-10 V∼ approx. 870 Hz (LP HI LO)

42

WH/BK

Throttle position sensor

out



42 - 67

5 V

43

GY

Pressure sensor

out



43 - 67

5 V

44

OG

Knock signal

in

Idling speed

44 - 25

50-100 mV∼ (LP P LO)

45

GN/BN

Throttle position sensor

in



45 - 67

idle. approx 0.5 V see also tech. data

46

WH/BK

Intake air temperature sensor

in

40C (104F)

46 - 67

1.5 V see also tech. data

47

BN/WH

Oxygen sensor, reference ground

in

Idling speed

47 - 67

0-1 V

48

PK/WH

+30

in

Idling speed

B+ - 48

<0.5 V

49

BU/VT

Idle air control valve

out

A/C and all electric consumers off

49 - 25

500 Hz 25-50 % 0.5-1.0 ms (LP HI LO)

50

BK/WH

Oxygen sensor 1, pre-heating

out

Idling speed

50 - 25

approx. 0.5 V

remove fuse no. 38

50 - 25

0 V

52

YE/WH

Vacuum pump, brake system

out

P, N

52 - 25

B+

R, D, 1, 2, 3

52 - 25

<0.5 V

54

RD/WH

A/C out

out

Idling, A/C ON

54 - 25

<0.5 V

Idling, A/C OFF

54 - 25

B+

56

WH

Fuel pump relay

out



56 - 25

B+

Idling speed

56 - 25

<0.5 V

57

GN/OG

Throttle position signal

out

Idling speed

57 - 25

100 Hz 9 % (+) 0.9 ms (+) (LP LO HI)

58

GN/RD

Engine speed signal

out

Idling speed

58 - 25

30 Hz (LP LO HIp)

59

GN/GY

A/C in

in

Idling, A/C ON

59 - 25

B+

Idling, A/C OFF

59 - 25

0 V

60

YE/GY

+15

in



B+ - 60

<0.5 V

62

RD/BK

For production only









63

BN

For production only









65

YE

For production only









66

BK

Reference ground, engine coolant temperature sensor

in



66 - 25

<0.05 V

67

BK

Sensor ground

out



67 - 25

<0.05 V

68

YE/WH

Engine coolant temperature sensor

in

90°C (194°F)

68 - 66

0.41 V see also tech. data