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Test readings, control module connections

Test readings, control module connections





Scope

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

Remember:


• Note the test conditions and use your common sense when judging the test results.

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

• First check that the control module has a power supply and is grounded.

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

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







• If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components which ought to be checked more thoroughly.

• The test readings given apply to a calibrated Fluke 88/97.

• The test readings %(+) and ms(+) show the signal's pulse ratio and pulse duration. A test instrument capable of measuring pulse ratio and pulse duration must be used. The sign indicates a positive trigger pulse, TRIG+.





>= greater than; <= less than; » = approximately equal to; ∼= alternating current

Pins without comments have no pin connection. (LP: LOGIC PROBE P = select pulse; p = perceptible pulses)





Pin Cable colour Component/function In/Out Test conditions Across Test reading See
1

GN/BK

Main relay, 87

In



B+ to 1

<0.5 V



4

BU/WH

Relay, A/C compressor

Out

700 rpm

A/C ON

4-25

<0.5 V



5

OG

Cruise control B

In



Mode ON/OFF

5-25

0 V

B+



6

GN/RD

Combustion, Bank 2

In

700 rpm

6-25

15-90 Hz

(LP LO HIp)



7

BU/RD

Trigger 1

Out

700 rpm

7-25

6 Hz

14 ms (-)

(LP HI LOp)



8

BU/GN

Trigger 4

Out

700 rpm

8-25

6 Hz

14 ms (-)

(LP HI LOp)



9

GN/YE

Pedal position sensor 2

In

Pedal released

Pedal fully depressed

Use diagnostic tool

0.355-1.010 V

3.945-4.600 V



10

YE

Throttle position sensor 2

In

Throttle closed

Throttle fully open

10-70

3.910-4.935 V

0.025-1.070 V



11

BN/OG

Manifold absolute pressure sensor

In



11-22

2.1 V at 100 kPa



14

GN/RD

Pedal position (TC/ABS)

Out



14-25

8 Hz



15

WH/BK

Intake air temperature

In



15-22

Approx. 2.4 V at 20 °C



17

YE

Crankshaft position sensor

In

700 rpm





Starter motor cranking

17-18

5-15 V∼

» 680 Hz

LP HI LO

>2.0 V∼



18

BK

Crankshaft position sensor

In

700 rpm





Starter motor cranking

17-18

5-10 V∼

» 680 Hz

LP HI LO

>2.0 V∼



19

WH

P-bus -

In/Out



19-25

2-3 V

(LP PHI LO)



20

BK/RD

Injector 6

Out

700 rpm

20-25

6 Hz

(LP HI LOp)



21

PK/WH

Injector 5

Out

700 rpm

21-25

6 Hz

(LP HI LOp)



22

BK

Sensor ground

Out



22-25

< 0.1 V



23

RD

+30

In



B+ to 23

< 0.5



24

BU/RD

Throttle motor -

Out



48-24

600 Hz

LP HI LO



25

BK

Power ground

In



25- B-

<0.1 V



26

BU

Main relay

Out



10 s after ignition OFF

26-25

<0.5 V

B+



27

BN/RD

EVAP canister purge valve

Out

700 rpm, warm engine and valve active

27-25

16 Hz

(LP HI LOp)



28

BN

Engine speed (TC/ABS)

Out

700 rpm

28-25

25 Hz



29

GN/RD

Pedal switch, brake/clutch

In

Automatic, position D

Brake or clutch pedal depressed

29-25

B+

0 V



30

VT

Cruise control C

In



Mode ON/OFF

30-25

0 V

B+



31

RD/WH

Trigger 5

Out

700 rpm

31-25

6 Hz

14 ms (-)

(LP HI LOp)



32

BU/YE

Trigger 6

Out

700 rpm

32-25

6 Hz

14 ms (-)

(LP HI LOp)



33

GY/RD

Throttle position sensor 1

In

Throttle closed

Throttle fully open

33-70

0.065-1.090 V

3.930-4.775 V



34

RD

Oxygen sensor 1

In

700 rpm, warm engine, closed loop active

34-58

0-1 V



35

YE/RD

Charge air absolute pressure sensor

In



35-70

2.1 V (100 kPa)



36

WH

Relay, limp-home solenoid

Out



36-25

B+



38

OG/WH

Knock signal, Bank 1

In



38-25

2.5 V



39

WH/GN

Coolant temperature sensor

In



39-22

1.0 V (90 °C)



41

GY

Max. permitted engine torque (TC/ABS)

In

41-25

100 Hz



43

BU/RD

+15

In



Ignition OFF

43-25

B+

< 0.5 V



44

BK/WH

Injector 2

Out

700 rpm

44-25

6 Hz

(LP HI LOp)



45

BU/GN

Injector 1

Out

700 rpm

45-25

6 Hz

(LP HI LOp)



46

WH/BK

5 V

Out



46-70

5 V



47

BK

Power ground

In



47-B-

<0.1 V



48

GY/RD

Throttle motor +

Out



48-24

600 Hz

LP HI LO



49

VT/WH

Oxygen sensor, preheating

Out

700 rpm

49-25

» 0.3 V



50

GN

Fuel pump relay

Out



Starter motor cranking

50-25

B+

<0.5 V



52

WH

Cruise control A

In



Mode ON/OFF

52-25

0 V

B+



53

YE/BU

Combustion, Bank 1

In

700 rpm

53-25

15-90 Hz

(LP LO HIp)



54

YE/BK

Trigger 2

Out

700 rpm

54-25

6 Hz

14 ms (-)

(LP HI LOp)



55

RD/BU

Trigger 3

Out

700 rpm

55-25

6 Hz

14 ms (-)

(LP HI LOp)



56

WH/GN

Pedal position sensor 1

In

Pedal released

Pedal fully depressed

56-70

3.990-4.645 V

0.400-1.055 V



58

BK

Reference ground, oxygen sensor

In



58-25

<0.1 V



61

GY/RD

Engine torque (TC/ABS)

Out

61-25

100 Hz



62

GN/BK

Knock signal, Bank 2

In



62-25

2.5 V



63

GN/GY

Brake lights

In

Brake pedal depressed

63-25

0 V



B+



64

GY/RD

Vehicle speed

In

Rotate right front wheel 1/2 turn/s

64-25

15 Hz

50 %

(LP HIp LOp)



65

PK/WH

Mass air flow sensor

In

700 rpm

Engine warm

A/C OFF

electrical equipment turned off

65-25

Approx. 2.1 kHz



66

GN

P-bus +

In/Out



66-25

2-3 V

(LP PHI LO)



67

RD/YE

Injector 3

Out

700 rpm

67-25

6 Hz

(LP HI LOp)



68

GN/GY

Injector 4

Out

700 rpm

68-25

6 Hz

(LP HI LOp)



69

GY/RD

5 V

Out



69-22

5 V



70

GN/RD

Sensor ground

Out



70-25

<0.1 V