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

Affected pin







External BOSE amplifier, plug A, pin 23, pin 24, pin 26, pin 28

Diagnosis/Troubleshooting - BOSE

Work Instruction 1 - 5:

Work Instruction 6 - 10: