Manufacturer Code Charts: 27

VSA DTC Troubleshooting: 27

DTC 27: Steering Angle Sensor (With SH-AWD)

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), or press the engine start/stop button to select the ON mode.

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

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

Is it 0° ±3°?
YES - Go to step 6.

NO - Go to step 5.


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

6. Clear the DTC with the HDS.

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 - The system is OK at this time.


9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

10. Disconnect the steering angle sensor 5P connector. Service and Repair

11. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

12. Measure the voltage between the steering angle sensor 5P connector terminal No. 5 and body ground.

Is there battery voltage?
YES - Go to step 13.

NO - Repair open in the wire between the No. 6 (7.5 A) fuse in the driver's under-dash fuse/relay box and the steering angle sensor.






13. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

14. Check for continuity between the steering angle sensor 5P connector terminal No. 1 and body ground.

Is there continuity?
YES - Go to step 15.

NO - Repair open in the wire between the steering angle sensor and body ground (G401).






15. Disconnect the VSA modulator-control unit 47P connector. Service and Repair

16. Check for continuity between VSA modulator-control unit 47P connector terminals No. 12, No 13 and steering angle sensor 5P connector terminals No. 4, No. 2 individually.

Is there continuity?
YES - Go to step 17.

NO - Repair open in the wire between the VSA modulator-control unit and the steering angle sensor.






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

18. Reconnect all connectors.

19. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

20. Clear the DTC with the HDS.

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 - Go to step 23.

NO - Check for loose terminals in the steering angle sensor 5P connector. If the connections are OK, replace the steering angle sensor. Service and Repair


23. Update the VSA modulator-control unit if it does not have the latest software. Testing and Inspection If the unit already has the latest software, substitute a known-good VSA modulator-control unit. Service and Repair

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

25. Check for DTCs with the HDS.

Is DTC 27 indicated?
YES - Check for loose terminals in the VSA modulator-control unit 47P connector. If the VSA modulator-control unit was updated, substitute a known-good VSA modulator-control unit, Service and Repair then retest. If the VSA modulator-control unit was substituted, go to step 1.

NO - If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the original VSA modulator-control unit. Service and Repair If any other DTCs are indicated, go to the indicated DTCs troubleshooting.