External Harman Amplifier: 8004
8004 External Harman amplifierRear loudspeaker channel faulty
Diagnostic conditions
- Ignition on
- PCM2/CDR23 on
NOTE: Fault code 8003 is recorded in the PCM2 MMI it the operating buttons are actuated for one or more minutes
Possible cause of fault
- Short circuit to B+/ground in the wiring harness
- Short circuit - loudspeaker faulty
- Short circuit - amplifier faulty
Affected pin
External Harman amplifier, plug A, pin 24, pin 29, pin 25, pin 38
Diagnosis/troubleshooting