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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.


Diagnosis Procedure

Regarding Wiring Diagram information, With Navigation.

1. CONNECTOR CHECK

Check the AV control unit, BOSE speaker amp. and speaker connectors for the following:
- Proper connection
- Damage
- Disconnected or loose terminals
Is the inspection result normal?
YES- GO TO 2.
NO- Repair the terminal and connector.

2. HARNESS CHECK






1.Disconnect BOSE speaker amp. connector B75 and suspect speaker connector.
2.Check continuity between BOSE speaker amp. harness connector B75 (A) and suspect speaker harness connector (B).





3.Check continuity between BOSE speaker amp. harness connector B75 (A) and ground.





Are continuity test results as specified?
YES- GO TO 3
NO- Repair harness or connector.

3. FRONT SPEAKER SIGNAL CHECK






1.Connect BOSE speaker amp. connector B75 and suspect speaker connector.
2.Turn ignition switch to ACC.
3.Push "POWER" switch.
4.Check the signal between BOSE speaker amp. harness connector B75 terminals with CONSULT or oscilloscope.










Is audio signal voltage as specified?
YES- Replace suspect speaker. With Navigation.
NO- GO TO 4

4. HARNESS CHECK






1.Disconnect AV control unit connector M39 and BOSE speaker amp. connector B75.
2.Check continuity between AV control unit harness connector
M39 (A) and BOSE speaker amp. harness connector B75 (B).





3.Check continuity between AV control unit harness connector
M39 (A) and ground.





Are continuity test results as specified?
YES- GO TO 5
NO- Repair harness or connector.

5. 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
M39 terminals with CONSULT or oscilloscope.





Are the audio signal voltage readings as specified?
YES- Replace BOSE speaker amp. With Navigation.
NO- Replace AV control unit. With Navigation.