DTC 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, review the general troubleshooting information .

DTCs (VSA)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode, then to 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

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   VSA modulator-control unit 21P connector

   -3. Turn the vehicle to 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	Vehicle ON mode
   	VSA modulator-control unit 21P connector: disconnected

   DTC	VSA Modulator-Control Unit 21P Connector Terminal	Appropriate Wheel Speed Sensor 2P or 4P Connector Terminal
   11-12	No. 21	Right-front wheel speed Sensor 2P connector No. 2
   13-12	No. 19	Left-front wheel speed Sensor 2P connector No. 2
   15-12	No. 18	Right-rear wheel speed Sensor 2P connector No. 2 *1
   		Right-rear wheel speed Sensor 4P connector No. 4 *2
   17-12	No. 20	Left-rear wheel speed Sensor 2P connector No. 2 *1
   		Left-rear wheel speed Sensor 4P connector No. 4 *2

   *1: 2WD*2: AWD

   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

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connectors.

   Appropriate wheel speed sensor 2P connector (front), (rear) *1

   Appropriate wheel speed sensor 4P connector (rear) *2

   *1: 2WD*2: AWD

   -3. Turn the vehicle to 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	Vehicle ON mode
   	VSA modulator-control unit 21P connector: disconnected
   	Appropriate wheel speed sensor 2P connector (front), (rear) *1: disconnected
   	Appropriate wheel speed sensor 4P connector (rear) *2: disconnected

   DTC	VSA Modulator-Control Unit 21P Connector Terminal	Appropriate Wheel Speed Sensor 2P or 4P Connector Terminal
   11-12	No. 21	Right-front wheel speed Sensor 2P connector No. 2
   13-12	No. 19	Left-front wheel speed Sensor 2P connector No. 2
   15-12	No. 18	Right-rear wheel speed Sensor 2P connector No. 2 *1
   		Right-rear wheel speed Sensor 4P connector No. 4 *2
   17-12	No. 20	Left-rear wheel speed Sensor 2P connector No. 2 *1
   		Left-rear wheel speed Sensor 4P connector No. 4 *2

   *1: 2WD*2: AWD

   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)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Check for continuity between the appropriate VSA modulator-control unit 21P connector wheel speed sensor +B terminals (see table).

   Test condition	Vehicle OFF (LOCK) 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 wheel speed sensor wires between the appropriate wheel speed sensor and the VSA modulator-control unit.

   NO 

   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 .