27-11

VSA DTC Troubleshooting: 27-11, 27-26

DTC 27-11: Steering Angle Sensor DIAG Signal Error (Initial)

DTC 27-26: Steering Angle Sensor DIAG Signal Error (Main)

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

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

4. Check for DTCs with the HDS.

Is DTC 27-11 or 27-26 indicated?
YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose terminals between the steering angle sensor 5P connector and the VSA modulator-control unit 36P connector. Refer to intermittent failures troubleshooting. How to Troubleshoot the VSA System


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

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

7. Disconnect the VSA modulator-control unit 36P connector. Service and Repair

8. Check for continuity between body ground and steering angle sensor 5P connector terminals No. 2, No. 3, No. 4, and No. 5 individually.

Is there continuity?
YES - Repair short to body ground in the wire between the steering angle sensor and the VSA modulator-control unit.

NO - Go to step 9.






9. Check for continuity between the VSA modulator-control unit 36P connector terminal and the steering angle sensor 5P connector terminal individually.





Is there continuity?
YES - Go to step 10.

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






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

11. Reconnect all connectors.

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

13. Clear the DTC with the HDS.

14. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

15. Check for DTCs with the HDS.

Is DTC 27-11 or 27-26 indicated?
YES - Go to step 16.

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


16. 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

17. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

18. Check for DTCs with the HDS.

Is DTC 27-11 or 27-26 indicated?
YES - Check for loose terminals in the VSA modulator-control unit 36P 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.