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Home >> Volvo >> 2000 >> S80 2.9 L6-2.9L VIN 94 B6294S >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Steering and Suspension >> Relays and Modules - Steering >> Steering Mounted Controls Communication Module >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Checking the Audio/Telephone Switch Unit >> Trouble-Shooting Information
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Trouble-Shooting Information






Trouble-shooting information

Condition
- No SWM diagnostic trouble codes are displayed in the CEM
- No diagnostic trouble codes are displayed in the PHM.

Possible source
- Open circuit, short-circuit to earth or short-circuit to voltage supply on the wire
- Defective RTI switch unit
- Defective audio/telephone switch unit
- Defective cruise-control switch unit.

Fault symptom[s]
- Audio/telephone switch unit does not work.

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