ECPS Indicator Comes On When Changing Integrated Dynamics System Mode SPORT to COMFORT After the Engine is Started

Electronically Controlled Power Steering System (ECPS) Symptom Troubleshooting - ECPS indicator comes on when changing integrated dynamics system mode SPORT to COMFORT after the engine is started

ECPS indicator comes on when changing integrated dynamics system mode SPORT to COMFORT after the engine is started

1. Operate the integrated dynamics system switch to COMFORT mode.

2. Start the engine, and wait 2 seconds.

3. Check the ECPS indicator for several seconds.

Does the indicator come on with the engine running?

YES -

-Go to step 4.

NO -

Intermittent failure, the system is OK at this time.

4. Measure the voltage between gauge control module connector B (20P) terminal No. 7 and body ground.





Is there battery voltage?

YES -

Go to step 5.

NO -

Repair an open in the wire between the integrated dynamics system switch and the gauge control module.

5. Measure the voltage between gauge control module connector B (20P) terminal No. 10 and body ground.





Is there battery voltage?

YES -

Go to step 6.

NO -

Go to step 11.

6. Press the engine start/stop button to select the OFF mode.

7. Disconnect the ECPS control unit 12P connector.

8. Press the engine start/stop button to select the ON mode.

9. Measure the voltage between ECPS control unit 12P connector terminal No. 3 and body ground.





Is there battery voltage?

YES -

Go to step 10.

NO -

Repair an open in the wire between the integrated dynamics system switch and the ECPS control unit.

10. Measure the voltage between ECPS control unit 12P connector terminal No. 10 and body ground.





Is there battery voltage?

YES -

Replace the ECPS control unit Service and Repair.

NO -

Repair an open in the wire between the ECPS control unit and the gauge control module.

11. Press the engine start/stop button to select the OFF mode.

12. Disconnect the ECPS control unit 12P connector.

13. Press the engine start/stop button to select the ON mode.

14. Measure the voltage between the gauge control module connector B (20P) terminal No. 10 and body ground.





Is there battery voltage?

YES -

Replace the ECPS control unit Service and Repair.

NO -

Go to step 15.

15. Press the engine start/stop button to select the OFF mode.

16. Disconnect the gauge control module connector B (20P).

17. Measure the resistance between the gauge control module connector B (20P) terminal No. 10 and body ground.





Is there 1 MOhms or more?

YES -

Replace the gauge control module Service and Repair.

NO -

Repair a short to body ground in the wire between the ECPS control unit and the gauge control module.