AV Branch Line Circuit

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 AV control 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 AV control unit.
2.Check the resistance between the AV control unit harness connector terminals.
-Models with base audio





-Models with BOSE audio system with navigation





-Models with BOSE audio system without navigation





Is the measurement value within the specification?
YES- GO TO 3.
NO- 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 the following.
- Models with base audio: Base Audio
- Models with BOSE audio system with navigation: With Navigation
- Models with BOSE audio system without navigation: Without Navigation
Is the inspection result normal?
YES (Present error)-Replace the AV control unit. Refer to the following.
- Models with base audio: Base Audio
- Models with BOSE audio system with navigation: With Navigation
- Models with BOSE audio system without navigation: Without Navigation
YES (Past error)-Error was detected in the AV control unit branch line.
NO- Repair the power supply and the ground circuit.