12-12

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

DTC 12-12:

Right-front Wheel Speed Sensor Short to the Other Sensor Circuit

DTC 14-12:

Left-front Wheel Speed Sensor Short to the Other Sensor Circuit

DTC 16-12:

Right-rear Wheel Speed Sensor Short to the Other Sensor Circuit

DTC 18-12:

Left-rear Wheel Speed Sensor Short to the Other Sensor Circuit

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

2. Clear the DTC with the HDS.

3. Test-drive the vehicle at 13 mph(20 km/h) or more, and go a distance of 328 ft (100 m) or more.

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

4. Check for DTCs with the HDS.

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

YES -

Go to step 5 12-12.

NO -

Intermittent failure, the system is OK at this time. Check for loose terminals between the wheel speed sensor 2P connector and the VSA modulator-control unit 36P connector. Refer to intermittent failures troubleshooting Reading and Clearing Diagnostic Trouble Codes.�

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

6. Disconnect the VSA modulator-control unit 36P connector Service and Repair.

7. Check for continuity between the appropriate VSA modulator-control unit 36P connector wheel speed sensor GND terminals (see table).










Is there continuity?

YES -

Repair short in the wires between the appropriate wheel speed sensor and the VSA modulator-control unit.�

NO -

Go to step 8 12-12.

8. Reconnect the VSA modulator-control unit 36P connector.

9. 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.

10. Test-drive the vehicle at 13 mph(20 km/h) or more, and go a distance of 328 ft (100 m) or more.

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

11. Check for DTCs with the HDS.

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

YES -

Check for loose terminals in the VSA modulator-control unit 36P 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 12-12.

NO -

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. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.�