## DTC Troubleshooting: 41

DTC: 41 | Voltage For Motor

1. | Clear the DTC.

2. | Start the engine.

3. | Turn the steering wheel from lock to lock several times, and wait 10 seconds or more. Does the EPS indicator come on? YES - Go to 4. NO - The system is OK at this time.n

4. | Stop the engine, and verify the DTC. Is DTC 41 indicated? YES - Go to 5. NO - Perform the appropriate troubleshooting for the code indicated.n

5. | Make sure the ignition switch is OFF.

6. | Disconnect the negative cable from the battery.

7. | Disconnect the EPS control unit connector A (4P), motor relay 4P connector and motor 2P connector.

8. | Check for continuity between the EPS control unit connector A (4P) terminal No. 1 and body ground. Is there continuity? YES - Repair short to body ground in the RED wire between the EPS control unit and motor relay.n NO - Go to 9.

9. | Check for continuity between the motor relay 4P connector terminal No.1 and body ground. Is there continuity? YES - Repair short to body ground in the WHT/RED wire between the motor and motor relay.n NO - Go to 10.

10. | Check for continuity between the EPS control unit connector A (4P) terminal No. 3 and body ground. Is there continuity? YES - Repair short to body ground in the GRN wire between the EPS control unit and motor.n NO - Go to 11.

11. | Check for continuity between the EPS control unit connector A (4P) terminal No. 1 and No. 3 Is there continuity? YES - Repair short between the RED and GRN wires in the motor circuit between the EPS control unit and motor.n NO - Go to 12.

12. | Check for continuity between the EPS control unit connector A (4P) terminal No. 1 and the motor relay 4P connector terminal No. 1. Is there continuity? YES - Repair short between the RED and WHT/RED wires in the motor circuit between the EPS control unit and motor.n NO - Go to 13.

13. | Check for continuity between the EPS control unit connector A (4P) terminal No. 3 and the power relay 4P connector terminal No. 1. Is there continuty? YES - Repair short between the GRN and WHT/RED wires in the motor circuit between the EPS control unit and motor.n NO - Go to 14.

14. | Reconnect the negative cable to the battery.

15. | Turn the ignition switch ON (II) and measure the voltage between the EPS control unit connector A (4P) terminal No. 1 and body ground. Is there battery voltage? YES - Repair short to power in the + circuit wire between the EPS control unit and motor relay.n NO - Go to 16.

16. | Measure the voltage between the EPS control unit connector A (4P) terminal No. 3 and body ground. Is there battery voltage? YES - Repair short to power in the + circuit wire between the EPS control unit and motor.n NO - Go to 17.

17. | Measure the voltage between the motor relay 4P connector terminal No. 1 and body ground. Is there battery voltage? YES - Repair short to power in the + circuit wire between the motor relay and motor.n NO - Go to 18.

18. | Turn the ignition switch is OFF.

19. | Disconnect the negative cable from the battery.

20. | Substitute a known-good EPS control unit, and connect the all disconnected connectors.

21. | Reconnect the negative cable to the battery.

22. | Start the engine. Does the EPS indicator come on? YES - Go to 23. NO - Check for loose EPS control unit connectors. If necessary, a known-good EPS control unit and retest.n

23. | Stop the engien, and verify the DTC. Is DTC 41 indicated? YES - Check for loose EPS control unit connectors, motor connector and power relay connector. If necessary, substitute a known-good motor and recheck.n NO - Perform the appropriate troubleshooting for the code indicated.n