Diagnosis Procedure
- CHECK FUSE
Check that the following fuse is not blown:
Terminal No.
Signal name
Fuse No.
Capacity
1
Battery power supply
43
10A
Is the fuse blown?
YES
Replace the blown fuse after repairing the affected circuit.
NO
GO TO 2.
- CHECK POWER SUPPLY CIRCUIT
- Disconnect front auxiliary input jacks control unit connector.
- Check voltage between front auxiliary input jacks control unit connector and ground.
Front auxiliary input jacks control unit
Ground
Voltage
(Approx.)
Connector
Terminal
M121
1
--
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 front auxiliary input jacks control unit connector and ground.
Front auxiliary input jacks control unit
Ground
Continuity
Connector
Terminal
M121
4
Ground
Yes
Is the inspection result normal?
YES
Inspection End
NO
Repair or replace harness or connectors.