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POWER SUPPLY AND GROUND CIRCUIT


BOSE AMP. BOSE AMP. : Diagnosis Procedure

1.CHECK FUSE
Check that the following fuses of the BOSE amp. are not blown.





Is inspection result OK?
YES - GO TO 2.
NO - If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT
Check voltage between BOSE speaker amp harness connector and ground.





Is inspection result OK?
YES - GO TO 3.
NO - Check harness between BOSE amp. and fuse.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BOSE amp. connector.
3. Check continuity between BOSE amp. harness connector and ground.





Is inspection result OK?
YES - INSPECTION END
NO - Repair harness or connector.