SAAB WIS ONLINE

Test readings, control module connections

Test readings, control module connections

Scope

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



Remember


• Note the test readings, use common sense when assessing the results of the tests.

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

• First, make sure the control module is supplied with power and grounded.

• Then, check all the 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 working.



• If any of the test readings is incorrect, use the wiring diagram to determine which lead, connector or component should be checked further.

• The specified test values apply for a Fluke 88/97.

• The test readings % (+) and ms (+) signify the pulse ratio and pulse length of the signal respectively. A test instrument capable of measuring pulse ratio and pulse width must be used. The sign indicates a positive trigger pulse, TRIG+.





> = greater than; < = less than; ~= alternating current

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





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

RD/WH

Main relay, 87

In



B+ to 1

<0.5 V



2

Not connected

3

Not connected

4

RD/WH

Relay. A/C compressor

Out

Idling

A/C on

4-25

<0.5 V



5

GY/GN

Cruise control B

In



Position ON/OFF

5-25

0 V

B+



6

BN/RD

Combustion cyl. 3+4

In

Idling

6-25

15-90 Hz

(LP LO HIp)



7

OG/BK

Trigger 1

Out

Idling

7-25

7 Hz

14 ms (-)

(LP HI LOp)



8

GY/RD

Trigger 4

Out

Idling

8-25

7 Hz

14 ms (-)

(LP HI LOp)



9

YE/BU

Pedal position sensor 2

In

Pedal released



Pedal fully depressed

Use diagnostic tool

0.355 - 1.010 V

3.945-4.600 V



10

BU/BN

Throttle position sensor 2

In

Throttle closed



Throttle fully open

10-70

3.910- 4.935 V

0.025-1.070 V



11

BY/YE

Manifold absolute pressure sensor

In



11-22

2.1 V at 100 kPa



12

Not connected

13

BU

Charge air control valve

Out



13-25

32 Hz

2 % (-)

0.5 ms (-)

(LP HI LOp)



14

Not connected

15

WH/BK

Intake air temperature

In



15-22

Approx. 2.4 V at 20 C



16

Not connected

17

YE

Crankshaft position sensor

In

Idling





Starter motor cranking

17-18

5-15 V~

approx. 800 Hz

LP HI LO

>2.0 V~



18

BK

Crankshaft position sensor

In

Idling





Starter motor cranking

17-18

5-10 V~

approx. 800 Hz

LP HI LO

>2.0 V~



19

WH

P bus -

In/Out



19-25

2-3 V

(LP PHI LO)



20

Not connected

21

Not connected

22

BK

Sensor ground

Out



22-25

< 0.1 V



23

PK/WH

+30

In



B+ to 23

< 0.5



24

OG/GN

Throttle motor -

Out



48-24

600 Hz

LP HI LO



25

BK

Power ground

In



25- B-

<0.1 V



26

BU/GY

Main relay

Out



10 s after ignition off

26-25

<0.5 V

B+



27

YE/GY

EVAP canister purge valve

Out

Idling, warm engine and valve active

27-25

8 Hz

(LP HI LOp)



28

Not connected

29

YE/GN

Pedal switch, brake/clutch

In

Automatic position D

Brake or clutch pedal depressed

29-25

B+

0 V



30

GY

Cruise control C

In



Position ON/OFF

30-25

0 V

B+



31

Not connected

32

Not connected

33

GN/WH

Throttle position sensor 1

In

Throttle closed

Throttle fully open

33-70

0.065-1.090 V

3.930-4.775 V



34

GN

Oxygen sensor 1

In

Idling, warm engine, closed loop active

34-58

0-1 V



35

BU/WH

Charge air absolute pressure sensor

In



35-70

2.1 V (100 kPa)



36

BU/GN

Relay, limp-home solenoid

Out



36-25

B+



37

Not connected

38

OG

Knock signal

In



38-25

2.5 V



39

YE/WH

Temperature sensor, engine coolant

In



39-22

1.0 V (90C)



40

Not connected

41

Not connected

42

Not connected

43

YE/GY

+15

In



Ignition OFF

43-25

B+

<0.5 V



44

GN/WH

Injector 2

Out

Idling

44-25

7 Hz

2.5-4.5 ms (-)

(LP HI LOp)



45

GN/BK

Injector 1

Out

Idling

45-25

7 Hz

2.5-4.5 ms (-)

(LP HI LOp)



46

GY

5 V

Out



46-70

5 V



47

BK

Power ground

In



47-B-

<0.1 V



48

RD/BU

Throttle motor +

Out



48-24

600 Hz

LP HI LO



49

BK/WH

Oxygen sensor 1, pre-heating

Out

Idling

49-25

approx. 0.3 V



50

WH

Fuel pump relay

Out



Starter motor cranking

50-25

B+

<0.5 V



51

GN/BU

Control valve, bypass

Out

Rev up engine and release accelerator pedal

Acceleration under load

51-25

B+





<0.5 V



52

GN

Cruise control A

In



Position ON/OFF

52-25

0 V

B+



53

YE/BN

Combustion cyl. 1+2

In

Idling

53-25

15-90 Hz

(LP LO HIp)



54

GN/YE

Trigger 2

Out

Idling

54-25

7 Hz

14 ms (-)

(LP HI LOp)



55

BU/RD

Trigger 3

Out

Idling

55-25

7 Hz

14 ms (-)

(LP HI LOp)



56

YE/GN

Pedal position sensor 1

In

Pedal released



Pedal fully depressed

56-70

3.990- 4.645 V

0.400-1.055 V



57

Not connected

58

GY

Reference ground, oxygen sensor

In



58-25

<0.1 V



59

Not connected

60

Not connected

61

Not connected

62

BK

Power ground

62-B-

<0.1 V



63

VT

Brake lights

In



Brake pedal depressed

63-25

0 V

B+



64

PK/BK

Vehicle speed

In

Rotate front left wheel 1/2 rps

64-25

15 Hz

50 %

(LP HIp LOp)



65

GY/BU

Mass air flow sensor

In

Idling,

Engine warm,

A/C off,

electric consumers turned off

65-25

Approx. 2.1 kHz



66

WH

P-bus +

In/Out



66-25

2-3 V

(LP PHI LO)



67

VT/WH

Injector 3

Out

Idling

67-25

7 Hz

2.5-4.5 ms (-)

(LP HI LOp)



68

GY/WH

Injector 4

Out

Idling

68-25

7 Hz

2.5-4.5 ms (-)

(LP HI LOp)



69

WH/BK

5 V

Out



69-22

5 V



70

BK

Sensor ground

Out



70-25

<0.1 V