27-1

VSA DTC Troubleshooting: 27

DTC 27:

Steering Angle Sensor Malfunction

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Reading and Clearing Diagnostic Trouble Codes.

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

2. Check for DTCs with the HDS.

Is DTC 86 indicated with DTC 27 at the same time?

YES -

Do the DTC 86 troubleshooting 86-1.�

NO -

Go to step 3.

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

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

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

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

7. Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

8. Check the DTC with the HDS.

Is DTC 27 indicated?

YES -

Go to step 9.

NO -

Replace the original steering angle sensor Service and Repair.�

9. 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.

10. Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

11. Check the DTC with the HDS.

Is DTC 27 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 46P 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.�