Diagnosis Procedure
- CHECK FUSE
Check that the following fuse is not blown:
Terminal No.
Signal name
Fuse No.
Capacity
8
Battery power supply
46
20A
Is the fuse blown?
YES
Replace the blown fuse after repairing the affected circuit.
NO
GO TO 2.
- CHECK POWER SUPPLY CIRCUIT
- Disconnect Bose subwoofer amp., connector.
- Check voltage between Bose subwoofer amp., connector and ground.
Bose subwoofer amp.,
Ground
Voltage
(Approx.)
Connector
Terminal
M306
8
--
Battery voltage
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness or connectors.
- CHECK GROUND CIRCUIT
- Ignition switch OFF.
- Check continuity between Bose subwoofer amp., connector and ground.
Bose subwoofer amp.,
Ground
Continuity
Connector
Terminal
M306
16
Ground
Yes
Is the inspection result normal?
YES
Inspection End
NO
Repair or replace harness or connectors.