No Signal. Permanent Fault

No signal. Permanent fault

Checking for contact resistance and oxidation
Repair or replace the connectors of the sub-antenna and the audio module (AUM), checking for contact resistance and oxidation:
Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
If radio reception is now OK, the fault was poor contact in the connectors.

Other information:
- Radio/telephone, changing Removal and Replacement
- To access/replace the sub-antenna:
Radio equipment, replacing Radio Equipment, Replacing
- Connecting the breakout box, Audio control module Connecting the Breakout Box
- Signal specification, audio control module Signal Specification





Is the radio reception OK?

Yes - Fault Found

No - Checking the wiring and component

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Checking the wiring and component
Check the cables between the sub-antenna and control module connector terminal #C2 for open circuit:
Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Remedy as necessary.
If no fault is found, replace the sub-antenna amplifier.

Other information:
- Radio/telephone, changing Removal and Replacement.
- To access/replace the sub-antenna:
Radio equipment, replacing Radio Equipment, Replacing
- Connecting the breakout box, Audio control module Connecting the Breakout Box.
- Signal specification, audio control module Signal Specification





Select "Continue" when the fault has been remedied.

Continue - Verification

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Verification




Verification

Verification

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








- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
Check that radio reception functions.

Does radio reception function?

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 - FAULT-TRACING FAILED

Attempt New Test - Checking for contact resistance and oxidation

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