CAN

AV BRANCH LINE CIRCUIT


Diagnosis Procedure

1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the audio unit for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of audio unit.
2. Check the resistance between the audio unit harness connector terminals.





Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the audio unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the audio unit. Refer to Power Supply Circuit Inspection.
Is the inspection result normal?
YES (Present error)>>Replace the audio unit. Refer to Service and Repair.
YES (Past error)>>Error was detected in the audio unit branch line.
NO >> Repair the power supply and the ground circuit.