Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking the signal cable








- Ignition off
- Disconnect the connector from the central electronic module (CEM).

Hint: The signal line goes from the Central electronic module (CEM) to ground via glass breakage circuit left, glass breakage circuit right and glass breakage circuit tailgate.

Check the signal cable. Check for a short-circuit to supply voltage.
Begin by measuring at the grounding point and then go backward along the circuit to find the defect.
Remedy as necessary.

Other information:
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal specification Pinout Values and Diagnostic Parameters
- Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- For further information, see the wiring diagram.
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault









Är signalledningen korrekt?

Yes - Fault-tracing information

No - Verification

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Verification




Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.




- Ignition off.
- Reinstall the connectors, components etc.
- Shut all the doors. Activate the alarm.
- Deactivate alarm.
Check that the diagnostic trouble code (DTC) status displays Intermittent.





Does the diagnostic trouble code (DTC) status display Intermittent?

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 the signal cable

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