Front Door Speaker

FRONT DOOR SPEAKER


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 front door speakers using the audio signal circuits.




FRONT DOOR SPEAKER


Diagnosis Procedure

Regarding Wiring Diagram information, Electrical Diagrams.
1.HARNESS CHECK





1. Disconnect BOSE speaker amp. connector M112 and suspect speaker connector.
2. Check continuity between BOSE speaker amp. harness connector M112 (A) and suspect speaker harness connector (B).





3. Check continuity between BOSE speaker amp. harness connector M112 (A) and ground.





Are continuity test results as specified?
YES - GO TO 2.
NO - � Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
2.FRONT SPEAKER SIGNAL CHECK





1. Connect BOSE speaker amp. connector M112 and suspect speaker connector.
2. Turn ignition switch to ACC.
3. Push "POWER" switch.
4. Check the signal between BOSE speaker amp. harness connector M112 terminals with CONSULT-III or oscilloscope.





Is audio signal voltage as specified?
YES - Replace suspect speaker. Front Door Speaker.
NO - GO TO 3.
3.HARNESS CHECK





1. Disconnect AV control unit connector M42 and BOSE speaker amp. connector M113.
2. Check continuity between AV control unit harness connector
M42 (A) and BOSE speaker amp. harness connector M113 (B).





3. Check continuity between AV control unit harness connector
M42 (A) and ground.





Are continuity test results as specified?
YES - GO TO 4.
NO - � Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
4.FRONT SPEAKER SIGNAL CHECK





1. Connect AV control unit connector and BOSE speaker amp. connector.
2. Turn ignition switch ACC.
3. Push "POWER" switch.
4. Check the signal between AV control unit harness connector
M42 terminals with CONSULT-III or oscilloscope.





Are the audio signal voltage readings as specified?
YES - Replace BOSE speaker amp. Service and Repair.
NO - Replace AV control unit. AV Control Unit.