Part 2
8004 External Bose Amplifier
8004 External Bose Amplifier
Fault in front right/rear left and right loudspeaker channel
Diagnostic conditions
- Ignition on
- PCM2/CDR23 ON.
NOTE:
- Fault code 8003 is recorded in the PCM2 MMI if the operating buttons are actuated for '>= 1 Min.'.
- Deactivate the 'automatic traffic announcement' before performing the diagnosis on the PCM2. If this is not done, the diagnosis will abort.
Possible cause of fault
- Open circuit, contact resistance, or short circuit to B+/ground in the wiring harness
- Loudspeaker faulty
- Amplifier faulty
External BOSE amplifier, plug A, pin 23, pin 24, pin 26, pin 28
Diagnosis/troubleshooting - BOSE