CAN

EV/HEV BRANCH LINE CIRCUIT (HEV SYSTEM CAN CIRCUIT)

Diagnosis Procedure


1. CHECK CONNECTOR

1.Turn the ignition switch OFF.
2.Disconnect the 12V battery cable from the negative terminal.
3.Check the terminals and connectors of the HPCM 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 HPCM.
2.Check the resistance between the HPCM harness connector terminals.





Is the measurement value within the specification?
YES- GO TO 3.
NO- Replace the body harness.

3. CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the HPCM. HPCM Diagnosis Procedure.
Is the inspection result normal?
YES (Present error)-Replace the HPCM. Removal and Installation.
YES (Past error)-Error was detected in the HPCM branch line (HEV system CAN circuit side). Refer to
System Diagram.
NO- Repair the power supply and the ground circuit.