Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking cable

Hint: The fault could also have been caused by the windshield wipers sticking.

Check the cable between the central electronic module (CEM) and the windshield wiper motor (6/1). Check for a short-circuit to supply voltage. Check for an open-circuit.
Take readings between:
Central electronic module (CEM) terminal #16B and windshield wiper motor (6/1) terminal #3.
Check the cable between the central electronic module (CEM) and the rain sensor (7/149). Check for a short-circuit to supply voltage. Check for an open-circuit.
Take readings between:
Central electronic module (CEM) terminal #16B and rain sensor (7/149) terminal #4.
Also check the connectors.
If no other faults are found try a new windshield wiper motor (6/1).
Remedy as necessary.

Other information
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal specification Pinout Values and Diagnostic Parameters
- Motor windshield wiper, replacing Motor, Windshield Wiper, Replacing






Continue - Verification

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Verification




Verification

Verification

Hint: After the repair it is necessary to check that the fault has been rectified.








- Connect the connectors, install the components, etc.
- Ignition on.
Activate windscreen wipers, intermittent position.
Read the value.
The value should alternate between the two positions "rest position" and "operating position".





Does it work?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking cable

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