PCM2/CDR23: 9603

9603 Telephone/telematics

Fault in external telephone handset (optional)

Diagnostic conditions
- Ignition on
- PCM2 on

NOTE:
- Fault code 8003 is recorded in the PCM2 MMI if the operating buttons are actuated for '≥ 1 minute'.
- Deactivate the 'automatic traffic announcement' before performing the diagnosis on the PCM2. If this is not done, the diagnosis will abort (applies only to version number [<] 03).

Possible cause of fault
- No entry in the configuration file
- Short circuit/open circuit in electrical lead

NOTE:
- The MOST optical waveguide is connected to the following control modules:
- PCM2
- External amplifier
- CD changer
- Telephone/telematics

Diagnosis/troubleshooting

Part 1:

Part 2:

Part 3: