DTC 12-3

DTC 12-1, 12-2, 12-3: Lateral Acceleration Sensor Malfunction

NOTE: Before you troubleshoot, review the general troubleshooting information.

1. Turn the ignition switch to ON R.
2. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it doesn't, troubleshoot the DLC circuit.
3. Check for DTCs in the VSA system with the HDS.

Are any lateral acceleration sensor DTCs indicated?

YES - Go to the indicated DTC's troubleshooting.

NO - Go to step 4.

4. Test-drive the vehicle with an assistant in a left and right zig-zag pattern at about 13 mph (20 km/h) and check the LATERAL ACCELERATION SENSOR in the DATA LIST with the HDS.

Does the sensor value change when turning?

YES - Go to step 5.

NO - Update the SH-AWD control unit if it does not have the latest software, or substitute a known-good SH-AWD control unit and recheck. If the symptom/indication goes away with the updated SH-AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good SH-AWD control unit, replace the original SH-AWD control unit.

5. Park the vehicle on a level surface.
6. Check the LATERAL ACCELERATION SENSOR in the DATA LIST with the HDS.

Is there 0.1 G or less?

YES - Intermittent failure, the system is OK at this time. If the DTC returns, replace the SH-AWD control unit.

NO - Do the yaw rate-lateral acceleration neutral position memorization. Programming and Relearning If the DTC returns, replace the SH-AWD control unit. Yaw Rate-Lateral Acceleration Neutral Position Memorization