CAN

CGW BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 1)





Diagnosis Procedure
1.CHECK DTC
Check DTC of the CAN gateway with CONSULT-III.
Is U1010 or B2600 indicated?
YES - Perform a diagnosis of the indicated DTC.
NO - GO TO 2.
2.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).
- CAN gateway
- Harness connector M28 and PCB harness side connector
Is the inspection result normal?
YES - GO TO 3.
NO - Repair the terminal and connector.
3.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of CAN gateway.
2. Check the resistance between the CAN gateway harness connector terminals.





Is the measurement value within the specification?
YES - GO TO 4.
NO - GO TO 5.
4.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the CAN gateway. Power Supply And Ground Circuit.
Is the inspection result normal?
YES (Present error)-Replace the CAN gateway. Service and Repair.
YES (Past error)-Error was detected in the CAN gateway branch line (CAN communication circuit 1 side). Malfunction Area Chart.
NO - Repair the power supply and the ground circuit.
5.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the harness connector M28.
2. Check the continuity between the CAN gateway harness connector and the harness connector.





Is the inspection result normal?
YES - Replace the PCB harness.
NO - Repair the harness between the CAN gateway harness connector M125 and the harness connector M28.