DTC 61-04

DTC 61-04: Open/Short in the EPS Motor Harness (Steering Diagnosis)

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0).
4. Start the engine.
5. 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 6.

NO - Check for loose terminals or poor connections. If the connections are good, the system is OK at this time.

6. Check for DTCs with the HDS.

Is DTC 61-04 indicated?

YES - Go to step 7.

NO - Troubleshoot the indicated DTC. If there are no DTCs, the system is OK at this time.

7. Turn the ignition switch to LOCK (0).
8. Disconnect EPS control unit connector B (2P) and connector C (2P).
9. Check for continuity between the following terminals of EPS control unit connector B (2P) and connector C (2P).





Is there continuity?

YES - Go to step 10.

NO - Go to step 13.

10. Check for continuity between body ground and 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 11.

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.

11. Disconnect EPS motor connector B (1P) and EPS motor connector A (2P).
12. Check for continuity between body ground and 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 between the EPS control unit and the EPS motor.

NO - Short to the body ground in the EPS motor wire, or EPS motor internal circuit, replace the EPS motor.

13. Disconnect EPS motor connector B (1P) and EPS motor connector A (2P).
14. On the EPS motor side, check for continuity between the following terminals of EPS motor connector B (1P) and EPS motor connector A (2P).





Is there continuity?

YES - Repair open in the wire between the EPS control unit and the EPS motor.

NO - Open in the EPS motor wire, or EPS motor internal circuit, replace the EPS motor.