Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking components and wiring




- Ignition off.
Check that fuse 28 in the integrated relay / fusebox in the engine compartment is intact.
Check the cable between control module connector F terminal #6 (#B6) and fuse 28. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between control module connector F terminal #5 (#B5) and the left high beam bulb. Check the cable between control module connector F terminal #14 (#B14) and the right high beam bulb. Check the cable between control module connector terminal P#9 and the relay for auxiliary lamps terminal #5. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information
- To connect the breakout box, see Connecting the breakout box Connecting The Breakout Box. Central Electronic Module (CEM)
- For information about signals, see Signal specification Signal Description. Central Electronic Module (CEM)
- To access or replace the relay or fuse, see the inside of the cover on the engine compartment relay/fusebox.









Continue - Verification

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Verification




Verification

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




- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
Activate the high beam. The high beam must both light and go out.





Does the high beam both light and go out?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking components and wiring

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