VSA 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
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
These DTCs may be caused by electrical interference. Check for aftermarket devices installed in the vehicle when these DTCs are indicated.

DTC Description
DTC
Freeze Frame
12-12 Right-Front Wheel Speed Sensor Short to the Other Sensor Circuit
    
14-12 Left-Front Wheel Speed Sensor Short to the Other Sensor Circuit
    
16-12 Right-Rear Wheel Speed Sensor Short to the Other Sensor Circuit
    
18-12 Left-Rear Wheel Speed Sensor Short to the Other Sensor Circuit
    

1.
Problem verification:

Problem verification
?1.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?4.
Test-drive the vehicle at 12 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.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
12-12 Right-Front Wheel Speed Sensor Short to the Other Sensor Circuit
    
14-12 Left-Front Wheel Speed Sensor Short to the Other Sensor Circuit
    
16-12 Right-Rear Wheel Speed Sensor Short to the Other Sensor Circuit
    
18-12 Left-Rear Wheel Speed Sensor Short to the Other Sensor Circuit
    

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

     
YES
     
     
     
The failure is duplicated. Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.?
2.
Shorted wire check (Wheel speed sensor lines wire to wire):

Shorted wire check (Wheel speed sensor lines wire to wire)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Disconnect the following connector.

?3.
Check for continuity between the appropriate VSA modulator-control unit 21P connector wheel speed sensor GND terminals (see table).
Test condition
IG LOCK (0) or OFF mode
 
VSA modulator-control unit 21P connector: disconnected

DTC
VSA Modulator-Control Unit 21P Connector Terminal
 
Appropriate Terminal
Other Terminals
12-12
No. 21
No. 19
No. 18
No. 20
14-12
No. 19
No. 21
No. 18
No. 20
16-12
No. 18
No. 21
No. 19
No. 20
18-12
No. 20
No. 21
No. 19
No. 18


Is there continuity?

     
YES
     
     
     
Repair a short in the wires between the appropriate wheel speed sensor and the VSA modulator-control unit.?
     
NO
     
     
     
The wheel speed sensor wires are OK. Go to step 3.
3.
VSA modulator-control unit check (update):

VSA modulator-control unit check (update)
?1.
Reconnect the following connector.

?2.
Update the VSA modulator-control unit if it does not have the latest software.

?3.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?4.
Test-drive the vehicle at 12 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.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

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

     
YES
     
     
     
Check for loose terminals in the VSA modulator-control unit 21P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit.?
     
NO
     
     
     
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?