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

DTC 12-12:  Right-front Wheel Sensor Short to the Other Sensor Circuit
  
  
DTC 16-12:  Right-rear Wheel Sensor Short to the Other Sensor Circuit
  
  

1.Turn the ignition switch ON (II).

2.Clear the DTC with the HDS.

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

NOTE: Drive the vehicle on the road, not on the hoist.

4.Check for DTCs with the HDS.

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


YES - Go to 5.


NO - Intermittent failure, the system is OK at this time. Check for loose terminals between the wheel sensor 2P connector and the VSA modulator-control unit 37P connector. Refer to intermittent failures troubleshooting.n

5.Turn the ignition switch OFF.

6.Disconnect VSA modulator-control unit 37P connector.

7.Check for continuity between the appropriate VSA modulator-control unit 37P connector wheel sensor +B terminals (see table).

DTC VSA Modulator-control Unit 37P Connector Terminal No. 
Appropriate Terminal Other Terminals 
12-12 No. 19 No. 22 No. 9 No. 20 
14-12 No. 22 No. 19 No. 9 No. 20 
16-12 No. 9 No. 19 No. 22 No. 20 
18-12 No. 20 No. 19 No. 22 No. 9 

 

Is there continuity?


YES - Repair short in the wire between the appropriate wheel sensor and the VSA modulator-control unit.n


NO - Check for loose terminals in the VSA modulator-control unit 37P connector. If necessary, substitute a known-good VSA modulator-control unit and retest.n