Checking the Head Unit/Audio Module

Checking the head unit / audio module

Fault-tracing information
Before continuing with fault-tracing, the following must be checked:
- All tests for the relevant symptom must have been carried out
- No component, connector or wiring faults etc. should have been detected.

Have all tests been carried out and no faults detected?

Yes - Replacing the component

No - No Fault Found

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Replacing the component
Try a new head unit / audio module.

Caution! New head unit / audio control modules are supplied without software. The head unit / audio control module must be programmed after it has been replaced.

Other information:
- For information about programming and accessing or replacing the main unit and/or audio control module, see Radio/telephone, changing Service and Repair.

Was a fault detected?

Yes - Fault Found

No - No Fault Found

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