CAN

EPS BRANCH LINE CIRCUIT

Diagnosis Procedure


1. CHECK CONNECTOR

1.Turn the power switch OFF.
2.Disconnect the 12V battery cable from the negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
3.Check the terminals and connectors of the EPS 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 EPS control unit.
2.Check the resistance between the EPS control unit harness connector terminals.





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

3. CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the EPS control unit. Refer to "Diagnosis Procedure" C1601.
Is the inspection result normal?
YES (Present error)-Replace the steering column assembly. Refer to the following.
- With heated steering wheel: "Removal and Installation" With Heated Steering Wheel
- Without heated steering wheel: "Removal and Installation" Without Heated Steering Wheel
YES (Past error)-Error was detected in the EPS control unit branch line.
NO- Repair the power supply and the ground circuit.