DTC 22-1
DTC 22-1: Front Wheel Sensors1. Clear the DTCs.
2. Test-drive the vehicle, and watch the VTM-4 indicator.
Does the VTM-4 indicator come on?
YES-Go to step 3.
NO-The system is OK at this time.
3. Watch the VSA/ABS indicator.
Does the VSA/ABS indicator come on?
YES-Check the VSA or ABS system for DTCs.
- ABS or VSA
NO-Go to step 4.
4. Raise the vehicle, and make sure it is securely supported.
5. Spin the rear wheels by hand, and check for rear brake drag.
Are the rear brakes dragging?
YES-Repair cause of rear brake drag, and retest.
NO-Go to step 6.
6. Turn the ignition switch ON (II).
7. Measure the voltage between the A7 or A9 terminal of the VTM-4 control unit and body ground while rotating the appropriate wheel (1 rotation/second).
Is there 2 V to 3 V?
YES-Go to step 13.
NO-Go to step 8.
8. Turn the ignition switch OFF.
9. Disconnect the VTM-4 control unit and the VSA or ABS control unit connectors.
10. Check the same terminal of VTM-4 control unit connector A (22P) for continuity to body ground.
Is there continuity?
YES-Repair short to ground in the wire between the A7 and/or A9 terminals of the VTM-4 control unit and the VSA or ABS control unit.
NO-Go to step 11.
11. Connect the same terminals of VTM-4 control unit connector A (22P) to body ground with the jumper wires.
12. Check for continuity between the VSA or ABS control unit connector terminals and body ground.
Is there continuity?
YES-Go to step 13.
NO-Repair open in the wire between the A7 and/or A9 terminals of the VTM-4 control unit and the VSA or ABS control unit.
13. Check for loose terminal fit in the VTM-4 control unit and the VSA or ABS control unit connectors. If it is normal, replace the VTM-4 control unit. Test-drive the vehicle, and watch the VTM-4 indicator.
Does the VTM-4 indicator come on?
YES-Replace the VSA or ABS modulator assembly.
NO-The system is OK at this time.