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POWER SUPPLY AND GROUND CIRCUIT (COUPE)


BOSE SPEAKER AMP : Diagnosis Procedure

Regarding Wiring Diagram information, refer to Without Navigation.
1.CHECK FUSE
Check for blown fuses.





Are the fuses OK?
YES - GO TO 2
NO - Be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT





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





Is battery voltage present?
YES - GO TO 3
NO - Check harness between BOSE speaker amp and fuse.
3.CHECK GROUND CIRCUIT





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





Does continuity exist?
YES - Inspection End.
NO - Repair harness or connector.