VSA DTC Troubleshooting: 11-12, 13-12, 15-12, 17-12
DTC 11-12: Right-Front Wheel Speed Sensor Power Source Malfunction
DTC 13-12: Left-Front Wheel Speed Sensor Power Source Malfunction
DTC 15-12: Right-Rear Wheel Speed Sensor Power Source Malfunction
DTC 17-12: Left-Rear Wheel Speed Sensor Power Source Malfunction
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

DTC Description
DTC
Freeze Frame
11-12 Right-Front Wheel Speed Sensor Power Source Malfunction
    
13-12 Left-Front Wheel Speed Sensor Power Source Malfunction
    
15-12 Right-Rear Wheel Speed Sensor Power Source Malfunction
    
17-12 Left-Rear Wheel Speed Sensor Power Source Malfunction
    

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), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
11-12 Right-Front Wheel Speed Sensor Power Source Malfunction
    
13-12 Left-Front Wheel Speed Sensor Power Source Malfunction
    
15-12 Right-Rear Wheel Speed Sensor Power Source Malfunction
    
17-12 Left-Rear Wheel Speed Sensor Power Source Malfunction
    

Is DTC 11-12, 13-12, 15-12, or 17-12 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 to power) 1:

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

?4.
Measure the voltage between body ground and the appropriate wheel speed sensor GND terminals of the VSA modulator-control unit 21P connector individually (see table).
Test condition
IG ON (II) or ON mode
 
VSA modulator-control unit 21P connector: disconnected

DTC
VSA Modulator-Control Unit 21P Connector Terminal
Appropriate Wheel Speed Sensor 2P Connector Terminal
11-12
No. 21
Right-front
13-12
No. 19
Left-front
15-12
No. 18
Right-rear
17-12
No. 20
Left-rear


Is there 0.1 V or more?

     
YES
     
     
     
Wheel speed sensor wires are shorted to power. Go to step 3.
     
NO
     
     
     
The wheel speed sensor wires are not shorted to power. Go to step 4.
3.
Shorted wire check (Wheel speed sensor lines to power) 2:

Shorted wire check (Wheel speed sensor lines to power) 2
?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.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?4.
Measure the voltage between body ground and the appropriate wheel speed sensor GND terminals of the VSA modulator-control unit 21P connector individually (see table).
Test condition
IG ON (II) or ON mode
 
VSA modulator-control unit 21P connector: disconnected
 
Appropriate wheel speed sensor 2P connector: disconnected

DTC
VSA Modulator-Control Unit 21P Connector Terminal
Appropriate Wheel Speed Sensor 2P Connector Terminal
11-12
No. 21
Right-front
13-12
No. 19
Left-front
15-12
No. 18
Right-rear
17-12
No. 20
Left-rear


Is there 0.1 V or more?

     
YES
     
     
     
Repair a short to power in the wire between the VSA modulator-control unit and the appropriate wheel speed sensor.?
     
NO
     
     
     
The wheel speed sensor wires are not shorted to power. Replace the appropriate wheel speed sensor.?
4.
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.
Check for continuity between the appropriate VSA modulator-control unit 21P connector wheel speed sensor ?B 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
11-12
No. 14
No. 12
No. 11
No. 13
13-12
No. 12
No. 14
No. 11
No. 13
15-12
No. 11
No. 14
No. 12
No. 13
17-12
No. 13
No. 14
No. 12
No. 11


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 5.
5.
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), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

Is DTC 11-12, 13-12, 15-12, or 17-12 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.?