VSA System
DTC 21, 22, 23, 24: Pulser1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), 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, or 24 indicated?
YES - Go to step 6.
NO - The system is OK at this time.
6. Check the appropriate pulser (see table).
Is the pulser OK?
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 pulser.