DTC 27
DTC 27: Steering Angle Sensor1. Turn the ignition switch ON (II).
2. Measure the voltage between the steering angle sensor 5P connector terminal No. 5 and body ground.
Is there about 5 V?
YES-Go to step 3.
NO-Repair open in the wire between the VSA control unit and the steering angle sensor.
3. Turn the ignition switch OFF.
4. Check for continuity between the steering angle sensor 5P connector terminal No. 1 and body ground.
Is there continuity?
YES-Go to step 5.
NO-Repair open in the wire between the VSA control unit and the steering angle sensor.
5. Turn the ignition switch OFF.
6. Disconnect VSA control unit connector C (26P) and the steering angle sensor 5P connector.
7. Start the engine.
8. Measure the voltage between body ground and the steering angle sensor 5P connector terminals No. 2, No. 3 and No. 4 individually.
Is there 1 V or more?
YES-Repair short to power in the wire between the VSA control unit and the steering angle sensor.
NO-Go to step 9.
9. Turn the ignition switch OFF.
10. Check for continuity between body ground and the steering angle sensor 5P connector terminals No. 2, No. 3 and No. 4 individually.
Is there continuity?
YES-Repair short to body ground in the wire between the VSA control unit and the steering angle sensor.
NO-Go to step 11.
11. Connect VSA control unit connector C (26P).
12. Turn the ignition switch ON (II)..
13. Measure the voltage between body ground and VSA control unit connector C (26P) terminals No. 9 and No. 21 individually.
Is there about 5 V?
YES-Go to step 14.
NO-Check for loose VSA control unit connectors. If necessary, substitute a known-good VSA control unit, and recheck.
14. Measure the voltage between body ground and the steering angle sensor 5P connector terminals No. 2 and No. 4 individually.
Is there about 5 V?
YES-Go to step 15.
NO-Repair open in the wire between the VSA control unit and the steering angle sensor.
15. Turn the ignition switch OFF.
16. Connect the steering angle sensor 5P connector.
17. Turn the ignition switch ON (II).
18. Measure the voltage between the steering angle sensor 5P connector terminal No. 3 and body ground.
Is there about 0 V?
YES-Check for loose connectors, if necessary, replace the steering angle sensor.
NO-Go to step 19.
19. Measure the voltage between VSA control unit connector C (26P) terminal No. 17 and body ground.
Is there about 0 V ?
YES-Repair open in the wire between the VSA control unit and the steering angle sensor.
NO-Go to step 20.
20. Measure the voltage between body ground and the steering angle sensor 5P connector terminals No. 2 and No. 4 individually while turning the steering wheel slowly.
Is there 0 V to 5 V repeatedly?
YES-The system is OK at this time. If the problem recurs, check for loose VSA control unit connectors. If necessary, substitute a known-good VSA control unit, and recheck.
NO-Check for loose connectors, if necessary, replace the steering angle sensor.