PCM2/CDR23 - External BOSE Amplifier

8001 External BOSE Amplifier

Supply voltage

Diagnostic conditions
- Ignition on.
- PCM2/CDR23 ON

NOTE:
- The fault memory status (present / not present) is always updated when the motor is running.
- 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 (applies only to software version number < 03).

Possible cause of fault
- Battery positive voltage too low 'less then 9 V for greater then 20 sec.'
- Battery positive voltage too high 'greater then 16 V for greater then 5 sec'
- Fuse faulty.
- Check battery.
- Generator regulator faulty.
- Generator faulty.

Affected pin
PCM2 plug A, pin 1, pin 2

Diagnosis/ troubleshooting - battery voltage too low







Diagnosis/ troubleshooting - battery voltage too high