DTC 21, 22, 23, 24: Magnetic Encoder Malfunction

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

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Test-drive the vehicle at 31 mph (50 km/h) or more.
Check for DTCs with the HDS.
Is DTC 21, 22, 23, or 24 indicated?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting (see INTERMITTENT FAILURES ).

Inspect the appropriate magnetic encoder for debris or cracks.

DTC	Appropriate Magnetic Encoder	Note
21	Right-front	Remove the driveshaft outboard joint from the appropriate wheel hub bearing unit (see KNUCKLE/HUB BEARING UNIT REPLACEMENT ).
22	Left-front
23	Right-rear	Remove the hub bearing unit (see KNUCKLE/HUB BEARING UNIT REPLACEMENT ).
24	Left-rear

Is the magnetic encoder surface OK?

YES -Go to step 6.

NO -Remove the debris from the magnetic encoder, or replace the front hub bearing unit or the rear hub bearing unit (magnetic encoder):

Front: Replace the front hub bearing unit (see KNUCKLE/HUB BEARING UNIT REPLACEMENT ).
Rear: Replace the rear hub bearing unit (see KNUCKLE/HUB BEARING UNIT REPLACEMENT ).

Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE ).
Test-drive the vehicle at 31 mph (50 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 21, 22, 23, or 24 indicated?

YES -Check for loose terminals in the VSA modulator-control unit 46P 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 .