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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

90C (194F)

68 - 66

0.41 V see also tech. data