84-12

VSA DTC Troubleshooting: 84-12

DTC 84-12:

Steering Angle Sensor Neutral Position Memorization Incomplete

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information How To Troubleshoot The VSA System.

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

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0).

4. Test-drive the vehicle in a straight line at 37 mph(60 km/h) for 40 seconds or more.

NOTE: Drive the vehicle on the road, not on a lift.

5. Check for DTCs with the HDS.

Is DTC 84-12 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

6. Update the VSA modulator-control unit if it does not have the latest software Testing and Inspection.

7. Turn the ignition switch to LOCK (0).

8. Test-drive the vehicle in a straight line at 37 mph(60 km/h) for 40 seconds or more.

NOTE: Drive the vehicle on the road, not on a lift.

9. Check for DTCs with the HDS.

Is DTC 84-12 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 36P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit Service and Repair.

NO -

If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.