## EPS Components

#### DTC Troubleshooting (cont'd)

17-78

11. Substitute a know-good EPS control unit, and connect the all disconnected connectors.

12. Start the engine.

Does the EPS indicator come on?

YES - Go to step 13.

NO - Check for loose EPS control unit connectors. If necessary, replace the EPS control unit and retest.

13. Stop the engine, and verify the DTC.

Is DTC16 indicated?

YES - Check for loose torque sensor connectors. If necessary, substitute a known-good steering gearbox and recheck.

NO - Perform the appropriate troubleshooting for the code indicated

DTC 17: Torque Sensor Vcc1

DTC 18: Torque Sensor Vcc2

1. Clear the DTC.
2. Start the engine.
3. Wait at least 10 seconds.

Does the EPS indicator come on?

YES - Go to step 4.

NO - The system is OK at this time.

4. Stop the engine, and verify the DTC.

Is DTC17 or DTC18 indicated?

YES - Go to step 5.

NO - The system is OK at this time.

5. Make sure the ignition switch is OFF, then disconnect the EPS control unit connector C (20P) and torque sensor 6P connector.
6. Check for continuity between the EPS control unit connector C (20P) terminal No. 3 and body ground.

   EPS CONTROL UNIT CONNECTOR C (20)

Wire side of female terminals

Is there continuity?

YES - Repair short to body ground in the wire between the torque sensor and EPS control unit.

NO - Go to step 7.