18-1

VSA DTC Troubleshooting: 12-1, 14-1, 16-1, 18-1

DTC 12:

Right-Front Wheel Speed Sensor Signal Malfunction

DTC 14:

Left-Front Wheel Speed Sensor Signal Malfunction

DTC 16:

Right-Rear Wheel Speed Sensor Signal Malfunction

DTC 18:

Left-Rear Wheel Speed Sensor Signal Malfunction

NOTE:

- If the ABS and other indicators come on because of electrical noise, the indicators will go off when you test-drive the vehicle speed at 9 mph (15 km/h) or more and the noise is gone.
- An incorrectly installed wheel bearing can cause one of these DTCs.
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Reading and Clearing Diagnostic Trouble Codes.

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

2. Check the appropriate wheel speed sensor Service and Repair and inspect the magnetic encoder on the appropriate hub bearing for debris: Front, rear.





Are they installed correctly in good condition, and free of debris?

YES -

Go to step 3.

NO -

Reinstall or replace the appropriate wheel speed sensor Service and Repair, hub bearing unit; front, rear, and retest by test-driving.

3. Substitute an appropriate known-good wheel speed sensor Service and Repair.

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

5. Clear the DTC with the HDS.

6. Test-drive the vehicle at 9 mph (15 km/h) or more.

NOTE: Drive the vehicle on the road, not on a lift.

7. Check for DTCs with the HDS.

Is DTC 12, 14, 16, or 18 indicated?

YES -

Go to step 8.

NO -

Replace the original wheel speed sensor Service and Repair.

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

9. Substitute an appropriate known-good hub bearing unit: Front, rear.

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

11. Clear the DTC with the HDS.

12. Test-drive the vehicle at 9 mph (15 km/h) or more.

NOTE: Drive the vehicle on the road, not on a lift.

13. Check for DTCs with the HDS.

Is DTC 12, 14, 16, or 18 indicated?

YES -

Go to step 14.

NO -

Replace the original hub bearing unit:

- Front: Replace the original front hub bearing unit.
- Rear: Replace the original rear hub bearing unit.

14. Update the VSA modulator-control unit if it does not have the latest software Testing and Inspection.

15. Test-drive the vehicle at 9 mph (15 km/h) or more.

NOTE: Drive the vehicle on the road, not on a lift.

16. Check for DTCs with the HDS.

Is DTC 12, 14, 16, or 18 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 46P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit Service and Repair.

NO -

If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.