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Test readings, control module connections

Test readings, control module connections




Scope

This section contains the readings and instructions for measuring voltage levels on the SID unit.

Remember


Note the test conditions, and use common sense when assessing the test results.

First check that the control module is supplied with current and 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 or not 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 show the signal's pulse ratio and pulse width. A test instrument with pulse ratio and pulse width measurement must be used. The sign indicates a positive trigger pulse, TRIG+.





Pin No.

Cable colour

Component/

function

In/Out

Test conditions

Across

Test reading

See

1



No connection











2



No connection











3



No connection











4



No connection











5

RD

Battery voltage (+30 circuit)

In

Ignition ON.

5-B+

<0.5 V



6

BU/WH

Washer fluid level sensor

In

Washer fluid present (closed contact).

6-13

0 V











No washer fluid present (open contact).

6-13

B+



7

OG

Outside temperature sensor, ground

-

Ignition ON.

7-B-

<0.1 V



8

RD/BU

Rheostat, ground

-

Ignition ON.

8-B-

<0.1 V



9

YE

Steering wheel controls, ground

-

Ignition ON.

9-B-

<0.1 V



10



No connection











11

BN/OG

Horn relay

Out

Ignition ON.

Horn NOT activated.

11-13

B+











Horn activated.

11-13

0 V



12

GN

Bus (+)

In/Out

Ignition ON.

12-13

2.5 V



13

BK

Ground

Out

Ignition ON.

13-B-

<0.5 V



14



No connection











15



No connection











16



No connection











17



No connection











18

GN/WH

Coolant level sensor

In

Coolant present (closed contact).

18-13

0 V











No coolant present (open contact).

18-13

B+



19



Parking heater / auxiliary heater

Out

Activated

19-13

0 V











Not activated

19-13

B+



20

GY

Outside temperature sensor

In

Ignition ON.

Temperature readings:















10°C/50°F

20-13

2.49 V











20°C/68°F

20-13

1.72 V











30°C/86°F

20-13

1.43 V



21

RD/WH

Rheostat

In

Ignition ON.

“Max” rheostat position.



21-13



0 V











“Min” rheostat position

21-13

3.5 V



22

BU

Steering wheel controls (switches)

In

Ignition ON.

Press the following buttons:



-











Horn

22-13

0 V











VOL -

22-13

0.7 V











VOL +

22-13

1.2 V











SRC

22-13

1.8 V











SEEK >>

22-13

2.4 V











<< SEEK

22-13

3.0 V











NXT

22-13

3.6 V











Normal position

22-13

4.2 V



23

VT/WH

Filament monitor, front lights

In

Ignition ON.

OFF



23-13



B+











ON

23-13

0 V



24

WH

Bus (-)

In/Out

Ignition ON.

24-13

2.5 V



25

RD/BU

Battery voltage (+15 circuit)

In

Ignition ON.

25-B+

<0.5 V