Description
The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the subwoofers using the audio signal circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the AV control unit, BOSE speaker amp. and subwoofer connectors for the following:
2.HARNESS CHECK



3.REAR SUBWOOFER SIGNAL CHECK


4.HARNESS CHECK



5.REAR SUBWOOFER SIGNAL CHECK


Rear door speaker
AMP on signal circuitSystem malfunction
If the FEB system malfunctions, it will be turned
off automatically, a chime will sound, the FEB
warning light (orange) will illuminate and the
warning message [Malfunction] will appear in the
vehicle information display.
Action to take
If the warning light (orange) comes on, stop the
vehicle ...
Startup display
When the vehicle in placed in the ON or ACC
position the screens that display in the vehicle
information display include:
Home
Audio
Navigation
Drive Computer
Fuel economy
Driving Aids (if so equipped)
Tire Pressures
Chassis Control (if so equipped)
SPORT
Warning Review
Set ...
Power supply and ground circuit
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
1.CHECK FUSES
Check that the following fuses of the AV control unit are not blown.
2.POWER SUPPLY CIRCUIT CHECK
Disconnect AV control unit connectors M115 and M119.
Check voltage between the AV control unit connectors M115 and
...