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Test readings, control module connections

Test readings, control module connections

Scope

Test readings and instructions for measuring signals and levels on the Sensonic system are given in the following pages.

Some important points to remember:


• Readings must be taken with a Breakout Box (BOB) connected between the control module and the control module connector.

• Several voltage levels must be regarded as guiding values. Your common sense should tell you whether a reading is correct or not.

• If any test reading is obviously wrong, use the wiring diagram to trace the leads, connectors or components which you consider should be checked more thoroughly.

• Page references in the table refer to the page on which the principle of operation of the signal concerned is described, and also to the fault diagnosis schedule with a complete description of the diagnostic procedure to be followed.

• All test readings are for a warm engine.

• Unless otherwise stated, the ignition switch should be in the ON position.

• The specified test readings are in respect of calibrated FLUKE 88/97.


> = Greater than, < = Less than, » approximately equal to, ∼ = alternating current. (LP=Logic Probe, P = select pulse; p = visible pulses)


pin

Component/Function

Input/Output

Test conditions

Test reading

Across

1

Not connected









2

Not connected









3

CHECK ACS warning lamp

Output

Ignition ON

Activate with the Scan tool diagnostics instrument

ACS LAMP ON

ACS LAMP OFF

or

When ignition ON synchronous with lamp on





B+

0 V



B+ for 3 s

18 - 3

4

Not connected









5

+50 to starting relay

Output

Starter motor cranking

Otherwise

B+

0 V

5 - 19

6

Signal from control module to clutch actuator unit which activates the actuator motor driver stage

Output

Ignition ON

Activate with the Scan tool diagnostics instrument

Clutch actuator unit ON

Clutch actuator unit OFF





6 V

0 V

6 - 17

7

Not connected









8

Brake pedal switch

Input

Ignition ON

1st gear

Brake pedal depressed

or

Activate with the Scan tool diagnostics instrument

Cruise Control ON

Cruise Control OFF



B+

0 V





B+

0 V

8 - 19

9

Cruise Control, disengagement

Output

Ignition ON

1st gear

Neutral

or

Activate with the Scan tool diagnostics instrument

Cruise Control ON

Cruise Control OFF



B+

0 V





B+

0 V

9 - 19

10

Gear selector position sensor, Power supply

Output

Ignition ON

5.0 V

10 - 35

11

Not connected









12

Throttle position, position signal from Trionic

Input

Engine ON

Idling







2500 rpm

» 1 V

100 Hz

9%% (+)

0.9 ms (+)

LP HI LO

» 2 V

100 Hz

15%% (+)

1.5 ms (+)

LP HI LO

12 - 19

13

Engine rpm, signal from Trionic

Input

Engine ON

Idling







2500 rpm



0.4 V

30 Hz

1.5 ms (+)

LP HIp LO

1.2 V

85 Hz

1.5 ms (+)

LP HI LO

13 - 19

14

Gear selector movement sensor, power supply

Output

Ignition ON

B+

14 - 36

15

Engine load, signal from Trionic

Input

Engine ON

Front assembly RAISED

Idling



2500 rpm





30 Hz

LP P LO

85 Hz

LP P LO

15 - 19

16

Ground, NTC sensor for clutch housing temperature

Input

Ignition ON

<0.1 V

16 - 19

17

Ground, reference to clutch actuator unit

Output

Ignition ON

<0.1 V

17 - 19

18

Battery voltage +15

Input

Ignition ON

<0.5 V

B+ - 18

19

Power ground

Input

Ignition ON

<0.1 V

19 - B-

20

Not connected









21

Cruise Control ON/OFF

Input

Ignition ON

Put Cruise Control in diagnostics mode

Press SET/RES







0 V

21 - 19

22

Serial communication between Control Module and Clutch Actuator Unit

Input/Output

Ignition ON

» 1.9 V

LP HI LO

22 - 19

23

Serial communication between Control Module and Clutch Actuator Unit

Input/Output

Ignition ON

» 3.1 V

LP HI LO

23 - 19

24

Serial communication from control module to SID

Output

Ignition ON

Activate SID with the Scan tool diagnostics instrument

-no fault



-overheated clutch





9-10 V

LP HIp LOp

5-6 V LP

HIp LOp

24 - 19

25

Brake light switch

Input

Ignition ON

Brake activated

Brake not activated



B+

0 V

25 - 19

26

+50 in

Input

Starter motor cranking other positions

B+

0 V

26 - 19

27

Gear selector position sensor Sensor voltage on lengthwise movement

Input

Ignition ON

-1-

-2-

-3-

-4-

-5-

-R-



0.3-2.0 V

3.5-4.7 V

0.3-2.0 V

3.5-4.7 V

0.3-2.0 V

3.5-4.7 V

27 - 35

28

Gear selector position sensor Sensor voltage on crosswise movement

Input

Ignition ON

-1-

-2-

-3-

-4-

-5-

-R-



3.6-4.7 V

3.6-4.7 V

2.4-3.6 V

2.4-3.6 V

0.3-2.4 V

0.3-2.4 V

28 - 35

29

Gear selector movement sensor, Sensor voltage

Input

Ignition ON

2.2 V-2.8 V

29 - 36

30

NTC sensor for clutch housing temperature

Input

Ignition ON

20C

50C

80C

100C



3.4 V

2.1 V

1.2 V

0.7 V

30 - 16

31

Wheel speed Signal from ABS LH rear wheel

Input

Ignition ON

Raise the car

Rotate LH rear wheel 1/2 rev/sec

» 5 V

15 Hz

LP HIp LOp

31 - 19

32

Signal from control module which activates the clutch actuator unit

Output

Ignition ON

3-5 V

32 - 17

33

Not connected









34

Ground Inductive sensor for gearbox input rpm

Input

Ignition ON

<0.1 V

34 - 19

35

Ground Gear selector position sensor

Input

Ignition ON

<0.1 V

35 - 19

36

Ground Gear selector movement sensor

Input

Ignition ON

<0.1 V

36 - 19

37

Battery voltage +30

Input



<0.5 V

B+ - 37

38

Diagnostics lead K

Input/Output

Scan tool diagnostics instrument connected diagnostics instrument not connected

B+ 0 V

38 - 19

39

Not connected









40

Not connected









41

Not connected









42

Not connected









43

Not connected









44

Not connected









45

Not connected









46

Not connected









47

Not connected









48

Inductive sensor for gearbox input rpm

Input

Raise the car

Engage 1st gear

Rotate one of the front wheels 1/2 rev/sec





0.5 V AC

50 Hz

48 - 34

49

Not connected









50

Not connected









51

Not connected









52

Not connected









53

Not connected









54

Not connected









55

Not connected