51-07
EPS DTC Troubleshooting: 51-02, 51-03, 51-06, 51-07
DTC 51-02:
Torque Sensor (VT3 Differential-Amplification Function)
DTC 51-03:
Torque Sensor (VT1, VT2 Rapid Change)
DTC 51-06:
Torque Sensor (VT1, VT2 Average)
DTC 51-07:
Torque Sensor (VT1, VT2 Check)
1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Start the engine.
5. Check for DTCs with the HDS.
Is DTC 51-02, 51-03, 51-06, or 51-07 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 to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Disconnect EPS control unit connector D (28P).
8. Measure the resistance between EPS control unit connector D (28P) terminals No. 9 and No. 10.
Is the resistance between 12-15 Ohms?
YES -
Go to step 9.
NO -
Go to step 13.
9. Measure the resistance between EPS control unit connector D (28P) terminals No. 8 and No. 9.
Is the resistance between 12-15 Ohms?
YES -
Go to step 10.
NO -
Go to step 15.
10. Check for continuity between EPS control unit connector D (28P) terminal No. 9 and body ground.
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 Service and Repair.�
11. Disconnect the torque sensor 3P connector from the steering gearbox.
12. Check for continuity between EPS control unit connector D (28P) terminal No. 9 and body ground.
Is there continuity?
YES -
Repair a short to body ground in the wire between the torque sensor and the EPS control unit.�
NO -
Replace the steering gearbox Steering Gearbox Removal/Installation.�
13. Disconnect the torque sensor 3P connector from the steering gearbox.
14. On the sensor side, measure the resistance between torque sensor 3P connector terminals No. 1 and No. 2.
Is the resistance between 12-15 Ohms?
YES -
Repair an open or a short between the PNK and the BLU wires in the torque sensor circuit between the torque sensor and the EPS control unit.�
NO -
Replace the steering gearbox Steering Gearbox Removal/Installation.�
15. Disconnect the torque sensor 3P connector from the steering gearbox.
16. On the sensor side, measure the resistance between torque sensor 3P connector terminals No. 2 and No. 3.
Is the resistance between 12-15 Ohms?
YES -
Repair an open or a short between the BLU and the PUR wires in the torque sensor circuit between the torque sensor and the EPS control unit.�
NO -
Replace the steering gearbox Steering Gearbox Removal/Installation.�