VSA System

VSA DTC Troubleshooting: 21, 22, 23, 24

DTC 21, 22, 23, 24: Magnetic Encoder (Wheel Bearing)

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS. Initial Inspection and Diagnostic Overview

3. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

4. Test-drive the vehicle at 19 mph (30 km/h) or more.

Do the ABS and VSA indicators come on?
YES - Go to step 5.

NO - The system is OK at this time. Refer to intermittent failures. Initial Inspection and Diagnostic Overview


5. Check the appropriate magnetic encoder for debris or damage (see table). Testing and Inspection





Is the encoder OK?
YES - Go to step 6.

NO - Clean and reinstall or replace the magnetic encoder.


6. Turn the ignition switch to ON (II).

7. Clear the DTC with the HDS. Initial Inspection and Diagnostic Overview

8. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

9. Test-drive the vehicle at speeds above 19 mph (30 km/h).

Does the ABS indicator come on, and are DTCs 21, 22, 23, and/or 24 indicated?
YES - Check for loose terminals or poor connections at the VSA modulator-control unit 47P connector. If connections are good, replace the VSA modulator-control unit, Service and Repair and recheck.

NO - Replace the original magnetic encoder, Service and Repair or encoder/wheel bearing:

- Front hub/bearing unit Knuckle/Hub Bearing Unit Replacement

- Rear hub/bearing unit Service and Repair