DTC Diagnosis Procedure
1.
CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal?
.
Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
Disconnect the connector of AV control unit.
Check the resistance between the AV control unit harness connector terminals.
Without BOSE audio system
AV control unit harness connector
Resistance (Ω)
Connector No.
Terminal No.
M102
21
41
Approx. 54 – 66
With BOSE audio system
AV control unit harness connector
Resistance (Ω)
Connector No.
Terminal No.
M124
21
41
Approx. 54 – 66
Is the measurement value within the specification?
.
Repair the AV control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AV control unit. Refer to
Diagnosis Procedure
.
Is the inspection result normal?
(Present error)
Replace the AV control unit. Refer to
Removal and Installation
.
(Past error)
Error was detected in the AV control unit branch line.
Repair the power supply and the ground circuit.