DTC 18

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

NOTE: If the ABS and VSA indicators come on because of electrical noise, the indicator goes off when you test-drive the vehicle at 19 mph (30 km/h).

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch OFF, then disconnect the HDS.
4. Test-drive the vehicle at 19 mph (30 km/h) or more.
5. Check for DTCs with the HDS.

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

YES - Go to step 6.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections.

6. Turn the ignition switch OFF.
7. Check the appropriate wheel sensor and pulser for debris or damage and proper air gap.





Are they OK?

YES - Go to step 8.

NO - Clean and reinstall or replace the appropriate wheel sensor or pulser.

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





Is there continuity?

YES - Repair short in the wire between the appropriate wheel sensor and the other wheel sensor.

NO - Go to step 10.

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





11. Reconnect VSA modulator-control unit 47P connector.
12. Turn the ignition switch ON (II).
13. Clear the DTC with the HDS.
14. Turn the ignition switch OFF, then disconnect the HDS.
15. Test-drive the vehicle at 19 mph (30 km/h) or more.
16. 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, and retest.

NO - Replace the original wheel sensor.