Diagnosis Procedure
1.CHECK CONNECTOR
2.CHECK HARNESS FOR OPEN CIRCUIT
Check the resistance between the data link connector terminals.

BCM branch line circuit
M&A branch line circuitFront door speaker
Description
The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker
amp. amplifies the audio signals before sending them to the front door
speakers using the audio signal circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the audio unit, BOSE speaker amp. and speaker ...
Audio system
Symptom Table
AUDIO SYSTEM
Symptoms
Check items
Probable malfunction location
The disk cannot be removed.
Audio unit
Malfunction in audio unit.
No sound comes out or the level of the sound is low.
No sound from all speakers.
Speaker circuit short ...
AV control unit
Removal and Installation
AV control unit
AV control unit bracket (LH)
AV control unit bracket (RH)
A/C auto amp.
Cluster lid C (with A/C and AV switch
assembly attached)
Clip
AV CONTROL UNIT
Removal
CAUTION:
Before replacing AV control unit, perform "READ CONFIGURATI ...