Symptom Troubleshooting

VSA System Symptom Troubleshooting - ABS indicator, brake system indicator, and VSA indicator do not go off

ABS indicator, brake system indicator, and VSA indicator do not go off

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

2. Check the No. 6 (7.5 A) fuse in the driver's under-dash fuse/relay box.

Is the fuse blown?

YES -

Go to step 3.

NO -

Reinstall the checked fuse, then go to step 9.

3. Disconnect the VSA modulator-control unit 46P connector.

4. Disconnect the steering angle sensor 5P connector Service and Repair.

5. Disconnect the yaw rate-acceleration sensor 4P connector Service and Repair.

6. Check for continuity between VSA modulator-control unit 46P connector terminal No. 40 and body ground.





Is there continuity?

YES -

Repair a short to body ground in the wire between the No. 6 (7.5 A) fuse in the driver's under-dash fuse/relay box and the VSA modulator-control unit or the steering angle sensor or the yaw rate-acceleration sensor.�

NO -

Go to step 7.

7. Reconnect all connectors.

8. Check the ABS indicator, brake system indicator, and VSA indicator for several seconds when the ignition switch is turned to ON (II), or press the engine start/stop button to select the ON mode.

Do the indicators come on then go off?

YES -

The system is OK at this time.�

NO -

Go to step 14.

9. Disconnect the VSA modulator-control unit 46P connector.

10. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

11. Measure the voltage between VSA modulator-control unit 46P connector terminal No. 40 and body ground.





Is there battery voltage?

YES -

Go to step 12.

NO -

Repair an open in the wire between the No. 6 (7.5 A) fuse in the driver's under-dash fuse/relay box and the VSA modulator-control unit.�

12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

13. Check for continuity between VSA modulator-control unit 46P connector terminal No. 43 and body ground.





Is there continuity?

YES -

Go to step 15.

NO -

Repair an open in the wire between the VSA modulator-control unit and body ground (G302).�

14. Disconnect the VSA modulator-control unit 46P connector.

15. Disconnect gauge control module connector A (32P) Service and Repair.

16. Check for continuity between VSA modulator-control unit 46P connector terminals No. 38 and No. 39, and gauge control module connector A (32P) terminals No. 13 and No. 14 individually.





Is there continuity?

YES -

Go to step 17.

NO -

Repair an open in the wire between the gauge control module and the VSA modulator-control unit.�

17. Reconnect all connectors.

18. Update the VSA modulator-control unit if it does not have the latest software Testing and Inspection. If the unit already has the latest software, substitute a known-good VSA modulator-control unit Service and Repair.

19. Check the ABS indicator, brake system indicator, and VSA indicator for several seconds when the ignition switch is turned to ON (II), or press the engine start/stop button to select the ON mode.

Do the indicators come on then go off?

YES -

If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the original VSA modulator-control unit Service and Repair.�

NO -

Check for loose terminals in the VSA modulator-control unit 46P connector. If the VSA modulator-control unit was updated, substitute a known-good VSA modulator-control unit Service and Repair, then retest. If the VSA modulator-control unit was substituted, go to step 1.