CAN

AVM 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 ITS 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 ITS control unit.
2.Check the resistance between the ITS control unit harness connector terminals.





Is the measurement value within the specification?
YES- GO TO 3.
NO- Repair the ITS control unit branch line.

3. CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ITS control unit. Refer to "Diagnosis Procedure" ITS.
Is the inspection result normal?
YES (Present error)-Replace the ITS control unit. Refer to "Removal and Installation ITS Control Unit" Removal And Installation - ITS Control Unit.
YES (Past error)-Error was detected in the ITS control unit branch line.
NO- Repair the power supply and the ground circuit.