71-03

EPS DTC Troubleshooting: 71-01, 71-02, 71-03

DTC 71-01:

Motor Angle Sensor (SIN/COS Signals)

DTC 71-02:

Motor Angle Sensor (Neutral Position Learning of SIN/COS)

DTC 71-03:

Motor Angle Sensor (SIN/COS Signals)

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. Turn the steering wheel to the right or left, and wait 10 seconds or more.

6. Check for DTCs with the HDS.

Is DTC 71-01, 71-02, or 71-03 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), or press the engine start/stop button to select the OFF mode.

8. Disconnect EPS control unit connector D (28P).

9. Measure the resistance between the following terminals of EPS control unit connector D (28P).









Is the resistance between R1-R2 5-50 Ohms, S1-S3 10-100 Ohms, and S2-S4 10-100 Ohms?

YES -

Go to step 10.

NO -

Go to step 13.

10. Check for continuity between body ground and EPS control unit connector D (28P) terminal No. 12, terminal No. 13, terminal No. 14, terminal No. 26, terminal No. 27, and terminal No. 28 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 Service and Repair.�

11. Disconnect the EPS motor angle sensor 6P connector.

12. On the sensor side, check for continuity between body ground and EPS motor angle sensor 6P connector terminal No. 1, terminal No. 2, terminal No. 3, terminal No. 4, terminal No. 5, and terminal No. 6 individually.





Is there continuity?

YES -

Replace the steering gearbox Steering Gearbox Removal/Installation.�

NO -

Repair a short to body ground in the wire between the EPS motor angle sensor 6P connector and the EPS control unit.�

13. Disconnect the EPS motor angle sensor 6P connector.

14. On the sensor side, measure the resistance between the following terminals of the EPS motor angle sensor 6P connector.









Is the resistance between R1-R2 5-50 Ohms, S1-S3 10-100 Ohms, and S2-S4 10-100 Ohms?

YES -

Repair an open or a short to body ground in the wire between the EPS motor angle sensor 6P connector and the EPS control unit.�

NO -

Replace the steering gearbox Steering Gearbox Removal/Installation.�