VSA System

VSA DTC Troubleshooting: 12, 14, 16, 18

DTC 12, 14, 16, 18: Wheel Speed Sensor (Electrical Noise/Intermittent Interruption)

NOTE: If the ABS and the VSA indicator comes on because of electrical noise, the indicator will go off when you test-drive the vehicle at 19 mph (30 km/h) after the system returns to normal.

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

4. Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.

5. Check for DTCs with the HDS.

Is DTC 12, 14, 16 or 18 indicated?
YES - Go to step 6.

NO - The system is OK at this time. Refer to intermittent failures. Reading and Clearing Diagnostic Trouble Codes


6. Turn the ignition switch to LOCK (0).

7. Check the appropriate wheel speed sensor and magnetic encoder for debris or damage. Testing and Inspection





Is there debris or damage?
YES - Clean or replace the wheel speed sensor or magnetic encoder.

NO - Go to step 8.


8. Disconnect the VSA modulator-control unit 47P connector.

9. Check for continuity between the appropriate wheel speed sensor +B terminal and other wheel speed sensor +B terminals of the VSA modulator-control unit 47P connector (see table).





Is there continuity?
YES - Repair a short in the wire between the appropriate wheel speed sensor and the other wheel speed sensor.

NO - Go to step 10.






10. Substitute a known-good wheel speed sensor for the appropriate wheel speed sensor (see table).





11. Turn the ignition switch to ON (II).

12. Clear the DTC with the HDS.

13. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

14. Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.

15. Check for DTCs with the HDS.

Is DTC 12, 14, 16 or 18 indicated?
YES - Check for loose terminals or poor connections at the VSA modulator-control unit 47P connector. If connections are good, replace the VSA modulator-control unit, Service and Repair and recheck.

NO - Replace the original wheel speed sensor or encoder. Service and Repair