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 ABS modulator-control unit 25P connector. Refer to intermittent failures troubleshooting.n


5.Turn the ignition switch OFF.

6.Disconnect the ABS modulator-control unit 25P connector.

7.Check for continuity between the appropriate ABS modulator-control unit 25P connector wheel sensor +B terminals (see table).

DTC ABS Modulator-control Unit 25P
Connector Terminal No. 
Appropriate
Terminal 
Other Terminals 
12-12 No. 2 No. 12 No. 6 No. 14 
14-12 No. 12 No. 2 No. 6 No. 14 
16-12 No. 6 No. 2 No. 12 No. 14 
18-12 No. 14 No. 2 No. 12 No. 6 

 

Is there continuity?


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


NO - Check for loose terminals in the ABS modulator-control unit 25P connector. If necessary, substitute a known-good ABS modulator-control unit and retest: Except K20Z2 engine model, K20Z2 engine model.n