Manufacturer Code Charts: 18

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 indicators came on because of electrical noise, the indicator will go off when you test-drive the vehicle at 9 mph (15 km/h) after the system returns to normal.

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

2. Check that the appropriate wheel speed sensor is properly mounted. Service and Repair





Is the wheel speed sensor installation OK?
YES - Go to step 3.

NO - Reinstall the wheel speed sensor, and check the mounting position. Service and Repair


3. Inspect the appropriate magnetic encoder for damage, debris, and correct installation.





Is the magnetic encoder OK?
YES - Go to step 4.

NO - Remove the debris from the magnetic encoder, or replace the wheel bearing (front) or the wheel bearing unit (rear):

- Front: Replace the front wheel bearing. Front Knuckle/Hub/Wheel Bearing Replacement

- Rear: Replace the rear wheel bearing unit. Rear Knuckle/Hub/Wheel Bearing Unit Replacement



4. Disconnect the VSA modulator-control unit 47P connector. Service and Repair

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





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

NO - Go to step 6.






6. Substitute a known-good wheel speed sensor. Service and Repair

7. Reconnect VSA modulator-control unit 47P connector.

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

9. Clear the DTC with the HDS.

10. Test-drive the vehicle at 19 mph (30 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.

11. Check for DTCs with the HDS.

Is DTC 12, 14, 16, and/or 18 indicated?
YES - Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit, Service and Repair and retest.

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