CAN

E-SUS 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 following terminals and connectors for damage, bend and loose connection (unit side and connector side).
-Air levelizer control module
-CAN gateway (With ICC system)
Is the inspection result normal?
YES (With ICC system)-GO TO 2.
YES (Without ICC system)-GO TO 3.
NO- Repair the terminal and connector.

2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.Disconnect the connector of CAN gateway.
2.Check the continuity between the CAN gateway harness connector terminals.





Is the inspection result normal?
YES- GO TO 3.
NO- Check the harness and repair the root cause (CAN communication circuit 2 side). Malfunction Area Chart.

3. CHECK HARNESS FOR OPEN CIRCUIT

1.Connect the connector of CAN gateway. (With ICC system)
2.Disconnect the connector of air levelizer control module.
3.Check the resistance between the air levelizer control module harness connector terminals.





Is the measurement value within the specification?
YES- GO TO 4.
NO- Repair the air levelizer control module branch line.

4. CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the air levelizer control module. Power Supply And Ground Circuit.
Is the inspection result normal?
YES (Present error)-Replace the air levelizer control module. Removal And Installation.
YES (Past error)-Error was detected in the air levelizer control module branch line.
NO- Repair the power supply and the ground circuit.