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POWER SUPPLY AND GROUND CIRCUIT

BOSE AMP. : Diagnosis Procedure


1. CHECK FUSE

Check for blown fuses.





Is the inspection result normal?
YES- GO TO 2.
NO- Be sure to eliminate cause of malfunction before installing new fuse.

2. CHECK POWER SUPPLY CIRCUIT

Check voltage between BOSE amp. harness connector and ground.





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