8009 PCM2 - MMI
8009 PCM2 - MMI
MOST fault, optical/electrical
Diagnostic conditions
- Ignition on
- PCM2 on
Possible cause of fault
- An optical (optical waveguide) or electrical (PCM2) open circuit in the ring
- MOST switch in production mode
- MOST switch incorrectly coded
- An optically/electrically faulty MOST control unit is connected to the MOST
NOTE:
- The MOST optical waveguide is connected to the following control units:
- PCM2 as of model year 2003
- CD changer
- Amplifier
- Telephone/telematics
Affected pins
Diagnosis/troubleshooting