Not Connected or Communication Problems. Permanent Fault

Not connected or communication problems. Permanent fault

Checking contact resistance and oxidation
Remedy the amplifier and head unit/audio control module (AUM) connectors for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Other information:
- To access/replace the amplifier, see Windshield antenna / amplifier, CD player, replacing Windshield Antenna / Amplifier, CD Player, Replacing.
- To access/replace head unit/audio control module , see Radio cassette player, replacing Radio Cassette Player, Replacing.
- To connect the breakout box, see Connecting the breakout box, Audio control module Connecting the Breakout Box.
- For information about signals and connectors, see Signal specification, audio control module Signal Specification.
If the sound reproduction is now OK, the fault was due to a bad connection in the connectors.

Is sound reproduction OK?

Yes - FAULT FOUND

No - Checking wiring and components

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Checking wiring and components
Check cable between the amplifier #D6 and head unit #D6 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To access/replace the amplifier, see Windshield antenna / amplifier, CD player, replacing Windshield Antenna / Amplifier, CD Player, Replacing.
- To access/replace head unit/audio control module , see Radio cassette player, replacing Radio Cassette Player, Replacing.
- To connect the breakout box, see Connecting the breakout box, Audio control module Connecting the Breakout Box.
- For information about signals and connectors, see Signal specification, audio control module Signal Specification.





Select "Continue" when the fault has been remedied.

Continue - Verification

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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 sound reproduction is OK.

Is sound reproduction OK?

Yes - Verification completed

No - 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 - Exit Fault-Tracing

No - Attempt New Test

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Attempt New Test - Checking contact resistance and oxidation

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