DTC: 43 | Motor Driven Current is Excessive High |
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 43 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), the motor relay 4P connector and the motor 2P connector. |
8. | Reconnect the negative cable to the battery. |
9. | Turn the ignition switch ON (II). |
10. | 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 11. |
11. | 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 12. |
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. | Turn the ignition switch is OFF. |
14. | 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 GRN and RED wires in the motor circuit between the EPS control unit and motor.n NO - Go to 15. |
15. | Check for continuity between the EPS control unit connector A (4P) terminal No. 3 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 16. |
16. | Check for continuity between the EPS control unit connector A (4P) terminal No. 3 and the motor relay 4P connector terminal No. 1.
Is there continuity? 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 17. |
17. | Disconnect the negative cable from the battery. |
18. | Substitute a known-good EPS control unit, and connect the all disconnected connectors. |
19. | Reconnect the negative cable to the battery. |
20. | Start the engine. Does the EPS indicator come on? YES - Go to 21. NO - Check for loose EPS control unit connectors. If necessary, substitute a known-good EPS control unit and retest.n |
21. | Stop the engine, and verify the DTC. Is DTC 43 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 |