Steering Angel Sensor Check
- ENG "ON".
- Turn the steering wheel to the left or right.
- Measure waveform between signal terminal of the steering angle sensor harness connector and chassis ground with oscilloscope.
Specification:
Check the voltage range(HIGH: 2.9±0.1V ~ 4.4±0.1V LOW: 1.2±0.1V ~ 2.1±0.1V) of the sensor signal in case of turning left, turning right, center position
If normal waveforms such as Figure, Figure, and Figureare detected in each condition, It is normal
- Is the measured waveform within specifications?
YES
- Fault is intermittent caused by poor connection in steering sensor harness and/or HECU's connector. Go to Verification Of Vehicle Repair procedure below.
NO
- If STN signal is HIGH on center position, Check for improper installation of steering angle sensor. Repair as necessary and then go to Verification Of Vehicle Repair procedure below.
- If sensor mounting state is normal, Substitute with a known-good steering angle sensor and check for proper operation.
- If problem is corrected, replace steering angle sensor and then go to Verification Of Vehicle Repair procedure below.