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 (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Turn the ignition switch to LOCK (0) and then back to ON (II).
Check for DTCs with the HDS.
Is DTC 11-12, 13-12, 15-12, or 17-12 indicated?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time. Refer to INTERMITTENT FAILURES TROUBLESHOOTING
Turn the ignition switch to LOCK (0).
Disconnect the VSA modulator-control unit 36P connector (see step 3 ).
Turn the ignition switch to ON (II).

Measure the voltage between body ground and the appropriate wheel speed sensor GND terminals of the VSA modulator-control unit 36P connector individually (see table).

DTC	VSA Modulator-Control Unit 36P Connector Terminal	Appropriate Wheel Speed Sensor 2P Connector Terminal
11-12	No. 10	Right-front
13-12	No. 6	Left-front
15-12	No. 4	Right-rear
17-12	No. 8	Left-rear

Fig 1: Measuring Voltage Between Body Ground And Wheel Speed Sensor Gnd Terminals Of VSA Modulator-Control Unit 36P Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 0.1 V or more?

YES -Go to step 9.

NO -Go to step 13.

Turn the ignition switch to LOCK (0).
Disconnect the appropriate wheel speed sensor 2P connector (see WHEEL SPEED SENSOR REPLACEMENT ).
Turn the ignition switch to ON (II).

Measure the voltage between body ground and the appropriate wheel speed sensor GND terminals of the VSA modulator-control unit 36P connector individually (see table).

DTC	VSA Modulator-Control Unit 36P Connector Terminal	Appropriate Wheel Speed Sensor 2P Connector Terminal
11-12	No. 10	Right-front
13-12	No. 6	Left-front
15-12	No. 4	Right-rear
17-12	No. 8	Left-rear

Fig 2: Measuring Voltage Between Body Ground And Wheel Speed Sensor Gnd Terminals Of VSA Modulator-Control Unit 36P Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

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 -Replace the appropriate wheel speed sensor (see WHEEL SPEED SENSOR REPLACEMENT ).

Turn the ignition switch to LOCK (0).

Check for continuity between the appropriate VSA modulator-control unit 36P connector wheel speed sensor +B terminals (see table).

DTC	VSA Modulator-Control Unit 36P Connector Terminal
DTC	Appropriate Terminal	Other Terminals
11-12	No. 23	No. 19	No. 18	No. 21
13-12	No. 19	No. 23	No. 18	No. 21
15-12	No. 18	No. 23	No. 19	No. 21
17-12	No. 21	No. 23	No. 19	No. 18

Fig 3: Checking Continuity Between VSA Modulator-Control Unit 36P Connector Wheel Speed Sensor +B Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

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

NO -Go to step 15.

Reconnect the VSA modulator-control unit 36P connector.
Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE ).
Turn the ignition switch to LOCK (0) and then back to ON (II).
Check for DTCs with the HDS.
Is DTC 11-12, 13-12, 15-12, or 17-12 indicated?

YES -Check for loose terminals in the VSA modulator-control unit 36P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).

NO -If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCS TROUBLESHOOTING .