DTC 61-04

DTC 61-04: Open/Short the Motor Harness (Steering diagnosis)
1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF.
3. Start the engine.
4. Turn the steering wheel to the right or left, and wait 10 seconds or more.
Does the EPS indicator come on?
YES - Go to step 5.
NO - Check for loose terminals or poor connections. If the connections are good, the system is OK at this time.

5. Verify the DTC.
Is DTC 61-04 indicated?
YES - Go to step 6.
NO - Troubleshoot the indicated DTC. If there are no DTCs, the system is OK at this time.

6. Turn the ignition switch OFF.
7. Disconnect EPS control unit connector B (2P) and connector C (2P).
8. Check for continuity between the following terminals of the EPS control unit connector B (2P) and connector C (2P).

Is there continuity?
YES - Go to step 9.
NO - Go to step 12.

9. Check for continuity between body ground and the EPS control unit connector B (2P) No. 1 terminal, connector C (2P) No. 1 terminal, and connector C (2P) No. 2 terminal individually.

Is there continuity?
YES - Go to step 10.
NO - Check for loose terminals in the EPS control unit connectors, and repair if necessary. If no poor connections are found, replace the EPS control unit.

10. Disconnect the motor 1P connector and motor 2P connector.
11. Check for continuity between body ground and the EPS control unit connector B (2P) No. 1 terminal, connector C (2P) No. 1 terminal, and connector C (2P) No. 2 terminal individually.

Is there continuity?
YES - Repair short to body ground in the wire harness between the EPS control unit and motor.
NO - Short to the body ground in the motor wire harness, or motor internal circuit, replace the motor.

12. Disconnect the motor 1P connector and motor 2P connector.
13. Check for continuity between the following terminals of the motor 1P and motor 2P connector.

Is there continuity?
YES - Repair open in the wire harness between the EPS control unit and motor.
NO - Open in the motor wire harness, or motor internal circuit, replace the motor.