| DTC: 46 and 47 | Motor Relay Stuck ON or Stuck OFF |
| 1. | Clear the DTC. |
| 2. | Start the engine. Does the EPS indicator come on? YES - Go to 3. NO - The system is OK at this time.n |
| 3. | Stop the engine, and verify the DTC. Is DTC 46 or 47 indicated? YES - Go to 4. NO - Perform the appropriate troubleshooting for the code indicated.n |
| 4. | Make sure the ignition switch is OFF, then remove the motor relay and test it. Is the relay OK? YES - With the motor relay removed, and go to 5. NO - Replace the motor relay (Replace the motor relay and EPS control unit together as a set).n |
| 5. | Disconnect the negative cable from the battery. |
| 6. | Disconnect the EPS control unit connector A (4P). |
| 7. | Check for continuity between the EPS control unit connector A (4P) terminal No. 3 and the motor relay 4P connector terminal No. 3.
Is there continuity? YES - Go to 8. NO - Repair open in the GRN wire between the EPS control unit and motor relay.n |
| 8. | Disconnect the motor 2P connector. |
| 9. | Check for continuity between the motor relay 4P connector terminal No. 1 and motor 2P connector terminal No.1 (RHD: No. 2)
Is there continuity? YES - Go to 10. NO - Repair open in the WHT/RED wire between the motor and motor relay.n |
| 10. | Reconnect the negative cable to the battery. |
| 11. | Turn the ignition switch ON (II). |
| 12. | 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 13. |
| 13. | Measure the voltage between the motor relay 4P connector terminal No. 3 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 14. |
| 14. | Turn the ignition switch OFF. |
| 15. | Check for continuity between the motor relay 4P connector 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 relay.n NO - Go to 16. |
| 16. | 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 17. |
| 17. | Start the engine. |
| 18. | Measure the voltage between the motor relay 4P connector terminal No. 2 and body ground.
Is there battery voltage? YES - Go to 19. NO - Repair short or open in the PNK/BLU wire between the EPS control unit and motor relay.n |
| 19. | Stop the engine, and the ignition switch OFF. |
| 20. | Disconnect the negative cable from the battery. |
| 21. | Disconnect the EPS control unit connector B (14P). |
| 22. | Reconnect the negative cable to the battery. |
| 23. | Start the engine. |
| 24. | Measure the voltage between the motor relay 4P connector terminal No. 2 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 25. |
| 25. | Stop the engine and the ignition switch OFF. |
| 26. | Check for continuity between the motor relay 4P connector terminal No. 2 and body ground.
Is there continuity? YES - Repair short to body ground in the PNK/BLU wire between the EPS control unit and motor relay.n NO - Go to 27. |
| 27. | Check for continuity between the motor relay 4P connector terminal No. 4 and body ground.
Is there continuity? YES - Check for loose EPS motor control unit connectors, motor connector and motor relay connector. If necessary, substitute a known-good EPS control unit and recheck.n NO - Repair open in the BLK wire between the motor relay and body ground (G451).n |