Manufacturer Code Charts: 27
VSA DTC Troubleshooting: 27
DTC 27:
Steering Angle Sensor Malfunction (Without 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, 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. Clear the DTC with the HDS.
4. Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.
5. Check for DTCs with the HDS.
Is DTC 27 indicated?
YES -
Go to step 6.
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 47P connector. Refer to intermittent failures troubleshooting.�
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Disconnect the steering angle sensor 5P connector Service and Repair.
8. Disconnect the VSA modulator-control unit 47P connector.
9. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
10. Measure the voltage between body ground and VSA modulator-control unit 47P connector terminals No. 5 and No. 40 individually.
Is there 0.1 V or more?
YES -
Repair a short to power in the wire between the VSA modulator-control unit and the steering angle sensor.�
NO -
Go to step 11.
11. Measure the voltage between body ground and VSA modulator-control unit 47P connector terminals No. 30, No. 38, and No. 41 individually.
Is there 0.1 V or more?
YES -
Repair a short to power in the wire between the VSA modulator-control unit and the steering angle sensor.�
NO -
Go to step 12.
12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
13. Check for continuity between body ground and VSA modulator-control unit 47P connector terminals No. 5 and No. 40 individually.
Is there continuity?
YES -
Repair a short to body ground in the wire between the VSA modulator-control unit and the steering angle sensor.�
NO -
Go to step 14.
14. Check for continuity between body ground and VSA modulator-control unit 47P connector terminals No. 30, No. 38, and No. 41 individually.
Is there continuity?
YES -
Repair a short to body ground in the wire between the VSA modulator-control unit and the steering angle sensor.�
NO -
Go to step 15.
15. Check for continuity between VSA modulator-control unit 47P connector terminals No. 5, No. 40 and steering angle sensor 5P connector terminals No. 5, No. 1 individually.
Is there continuity?
YES -
Go to step 16.
NO -
Repair an open in the wire between the VSA modulator-control unit and the steering angle sensor.�
16. Check for continuity between VSA modulator-control unit 47P connector terminals No. 30, No. 38, No. 41 and steering angle sensor 5P connector terminals No. 3, No. 4, and No. 2 individually.
Is there continuity?
YES -
Go to step 17.
NO -
Repair an 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 -
Replace the original 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.�