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) and then back to ON (II).

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 Reading and Clearing Diagnostic Trouble Codes.�

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 a 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 (see table).









Is there continuity?

YES -

Go to step 10.

NO -

Repair an 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) and then back to ON (II).

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) and then back to ON (II).

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.�