Component Location
General Description
The Steering Angle Sensor(SAS) uses two sensors ( A-sensor and B-sensor ) to determine the direction of the rotation of the wheel. The main component of each sensor is LED, photo transistor and slit plate.
The slit plate, which has 45 holes, is installed between LED and photo transistor, and generates signals if the slit plate rotates according to the steering wheel rotation. The steering angle sensor's signals are generated by photo transistor which is driven whenever the light passes through the holes. The HECU receives the steering signals from steering angle sensor by CAN communication and detects the operating speed and the direction of the steering wheel.
DTC Description
The steering angle sensor in the ESP system is an absolute angle sensor type. For this reason, the steering angle sensor needs the zero setting(Calibration) by the scantool. If the calibration of this sensor is undone, this DTC is set.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | Signal monitoring
| Calibration not completed Faulty steering angle sensor Faulty HECU
|
Threshold valve | when the calibration of the steering angle sensor has not completed
|
Fail-Safe | The TCS/ESP functions are inhibited. The ESP warning lamp is activated.
|