Manufacturer Code Charts: 27

VSA DTC Troubleshooting: 27

DTC 27: Steering Angle Sensor

1. Check the size, air pressure, and the amount of wear of all four tires, and check the wheel alignment. Service and Repair

Is the tire condition and wheel alignment OK?
YES - Go to step 2.

NO - Make sure the suspension is not modified, and adjust the wheel alignment correctly, and recheck by test-driving.


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

3. Clear the DTC with the HDS.

4. Slowly drive the vehicle straight ahead without turning the steering wheel for 10 ft (3 m) or more, then park the vehicle while holding the steering wheel in the straight ahead position.

5. Check the STEERING ANGLE in the VSA DATA LIST with the HDS.

Is it 0° ±3 °?
YES - Go to step 7.

NO - Go to step 6.


6. Do the VSA sensor neutral position memorization. Programming and Relearning

7. Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.

8. Check for DTCs with the HDS.

Is DTC 27 indicated?
YES - Go to step 9.

NO - If DTC 86 is indicated, do the DTC 86 troubleshooting first. 86 If no DTCs are indicated, the system is OK at this time.


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

10. Substitute a known-good steering angle sensor. Service and Repair

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

12. Clear the DTC with the HDS.

13. Do the VSA sensor neutral position memorization. Programming and Relearning

14. Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.

15. Check for DTCs with the HDS.

Is DTC 27 indicated?
YES - Go to step 16.

NO - Replace the original steering angle sensor. Service and Repair


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

17. Substitute a known-good sensor cluster. Service and Repair

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

19. Clear the DTC with the HDS.

20. Do the VSA sensor neutral position memorization. Programming and Relearning

21. Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.

22. Check for DTCs with the HDS.

Is DTC 27 indicated?
YES - Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit, Service and Repair and retest.

NO - Replace the original sensor cluster. Service and Repair