VSA System
DTC 21, 22, 23, 24: Pulser1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch OFF, then disconnect the HDS.
4. Test-drive the vehicle at 19 mph (30 km/h) or more.
5. Check for DTCs with the HDS.
Is DTC 21, 22, 23, and/or 24 indicated?
YES - Go to step 6.
NO - Intermittent failure, the system is OK at this time.
6. Turn the ignition switch OFF.
7. Check the appropriate pulser for debris or damage and proper air gap (see table).
Is the pulser OK?
YES - Go to step 8.
NO - Clean and reinstall or replace the pulser.
8. Substitute a known-good wheel sensor for the appropriate wheel sensor (see table).
9. Turn the ignition switch ON (II).
10. Clear the DTC with the HDS.
11. Turn the ignition switch OFF, then disconnect the HDS.
12. Test-drive the vehicle at 19 mph (30 km/h) or more.
13. Check for DTCs with the HDS.
Is DTC 21, 22, 23, and/or 24 indicated?
YES - Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit, and retest.
NO - Replace the original wheel sensor.