Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking component and contacts




- Ignition off.
- Remove switch 6/38 for LH and 6/39 for RH actuator.
Check connector for oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Also check connectors 54/4 and 54/3LG.
Do the necessary corrective action.













Is there a fault?

Yes - Verification

No - Checking the wiring

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Checking the wiring
Check wiring between central electronic module (CEM) #9A and beam setting control module #2 (6/38) for LH and (6/39) for RH actuator, for short circuit to ground, as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check wiring between central electronic module (CEM) #9A and beam setting control #2 (6/38) for LH and (6/39) for RH actuator for an open circuit, as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Do the necessary corrective action.

Additional information:
- For information on the central electronic module (CEM), see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing.













Is there a fault?

Yes - Verification

No - Trouble-shooting information

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Verification




Verification

Verification

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








- Ignition off.
- Connect connectors, install components etc.
- Ignition on.
Turn up and down and see if the light changes.

Does it work?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Trouble-shooting information

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Trouble-shooting 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 component and contacts

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