DTC 41-11: Right-Front Wheel Lock; DTC 42-11: Left-Front Wheel Lock; DTC 43-11: Right-Rear Wheel Lock; DTC 44-11: Left-Rear Wheel Lock

The DTCs may be indicated under these conditions:

The vehicle goes into a spin.
The ABS or VSA continues to operate for a long time.
Snow, dirt, or debris build-up on the wheel speed sensor or magnetic encoder.
Misadjusted brake pedal position switch.
Contaminated brake fluid.

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Drive the vehicle until the brakes drag or until the pedal is high and hard. This can take 20 or more brake pedal applications during an extended test-drive.

With the engine running, raise and support the vehicle LIFT AND SUPPORT POINTS , then spin the appropriate wheel by hand.

DTC	Appropriate Wheel
41-11	Right-front
42-11	Left-front
43-11	Right-rear
44-11	Left-rear

Is there brake drag?

YES -Repair the brake drag BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT

NO -Go to step 3.

Check that the appropriate wheel speed sensor is properly mounted (see WHEEL SPEED SENSOR REPLACEMENT ).
Is the wheel speed sensor installation OK?

YES -Go to step 4.

NO -Reinstall the wheel speed sensor, and check the mounting position (see WHEEL SPEED SENSOR REPLACEMENT ).
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Turn the ignition switch to LOCK (0).
Test-drive the vehicle at 6 mph (10 km/h) for 20 seconds or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 41-11, 42-11, 43-11, or 44-11 indicated?

YES -Go to step 9.

NO -If any other DTCs are indicated, go to the indicated DTCS TROUBLESHOOTING . If DTCs are not indicated, intermittent failure, the system is OK at this time. Refer to INTERMITTENT FAILURES TROUBLESHOOTING
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).
Test-drive the vehicle at 6 mph (10 km/h) for 20 seconds or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 41-11, 42-11, 43-11, or 44-11 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 .