POWER SUPPLY AND GROUND CIRCUIT (SEDAN)
BOSE SPEAKER AMP : Diagnosis Procedure
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
- Turn ignition switch OFF.
- Disconnect BOSE speaker amp connector.
- 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
- Turn ignition switch OFF.
- Disconnect BOSE speaker amp connector.
- Check continuity between BOSE speaker amp harness connector and ground.
Does continuity exist?
YES >> Inspection END.
NO >> Repair harness or connector.
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