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POWER SUPPLY AND GROUND CIRCUIT

BOSE SPEAKER AMP : Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" With Navigation.

1. CHECK FUSE

Check that the following fuses are not blown.





Are the fuses blown?
YES- Replace the blown fuse after repairing the affected circuit.
NO- GO TO 2.

2. CHECK POWER SUPPLY CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect Bose speaker amp. connector B122.
3.Check voltage between Bose speaker amp. connector B122 and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness or connectors.

3. CHECK GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect Bose speaker amp. connector B122.
3.Check continuity between Bose speaker amp. connector B122 and ground.





Is the inspection result normal?
YES- Inspection End.
NO- Repair or replace harness or connectors.