DTC 12: Right-Front Wheel Speed Sensor Signal Malfunction; DTC 14: Left-Front Wheel Speed Sensor Signal Malfunction; DTC 16: Right-Rear Wheel Speed Sensor Signal Malfunction; DTC 18: Left-Rear Wheel Speed Sensor Signal Malfunction

NOTE:

If the ABS and other indicators come on because of electrical noise, the indicators will go off when you test-drive the vehicle speed at 9 mph (15 km/h) or more and the noise is gone.
An incorrectly installed wheel bearing can cause one of these DTCs.
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 LOCK (0), or press the engine start/stop button to select the OFF mode.

Check the appropriate wheel speed sensor (see WHEEL SPEED SENSOR REPLACEMENT ) and inspect the magnetic encoder on the appropriate hub bearing for debris: Front (see HUB BEARING UNIT REPLACEMENT ), rear (see HUB BEARING UNIT REPLACEMENT ).

DTC	Appropriate Wheel Speed Sensor and Magnetic Encoder
12	Right-front
4	Left-front
16	Right-rear
18	Left-rear

Are they installed correctly in good condition, and free of debris?

YES -Go to step 3.

NO -Reinstall or replace the appropriate wheel speed sensor (see WHEEL SPEED SENSOR REPLACEMENT ), hub bearing unit; front (see HUB BEARING UNIT REPLACEMENT ), rear (see HUB BEARING UNIT REPLACEMENT ), and retest by test-driving.

Substitute an appropriate known-good wheel speed sensor (see WHEEL SPEED SENSOR REPLACEMENT ).
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
Clear the DTC with the HDS.
Test-drive the vehicle at 9 mph (15 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 12, 14, 16, or 18 indicated?

YES -Go to step 8.

NO -Replace the original wheel speed sensor (see WHEEL SPEED SENSOR REPLACEMENT ).
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
Substitute an appropriate known-good hub bearing unit: Front (see HUB BEARING UNIT REPLACEMENT ), rear (see HUB BEARING UNIT REPLACEMENT ).
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
Clear the DTC with the HDS.
Test-drive the vehicle at 9 mph (15 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 12, 14, 16, or 18 indicated?

YES -Go to step 14.

NO -Replace the original hub bearing unit:
- Front: Replace the original front hub bearing unit (see HUB BEARING UNIT REPLACEMENT ).
- Rear: Replace the original rear hub bearing unit (see 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 9 mph (15 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 12, 14, 16, or 18 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 .