Hyundai Elantra: Steering Angle Sensor. Description and Operation
The Steering Angle Sensor (SAS) is installed in EPS (Electric Power Steering) and it sends messages to HECU through CAN communication line.
The SAS is used to determine turning direction and speed of the steering wheel.
The HECU uses the signals from the SAS when performing ESC-related calculations.
Components (Steering Angle Sensor, Torque Sensor, Failsafe relay, etc.) of the EPS system are located inside the steering column & EPS unit assembly and the steering column & EPS unit assembly must not be disassemble to inspect or replace them. (Refer to “ST (Steering system) Gr.”)
Steering Angle Sensor (SAS) Calibration
PURPOSE OF calibration
On vehicle control, an ESC analyzes the intention of the driver.
An ESC recognizes a steering angle which a driver rotates through the steering angle sensor.
A steering angle sensor used in ESC adjusts 0° setting of steering wheel through K-line or CAN communication.
STEERING ANGLE SENSOR (SAS) CALIBRATION METHOD
Align the wheel to the straight line. (steering wheel < ± 5° )
ex) Perform the wheel alignment first.
Align the wheel to the straight line.
A driver moves the vehicle to the front and back about 5 meters twice or three times.
Connect Scan tool to the vehicle.
Select Brake system.
Select Steering angle sensor(SAS) calibration.
Perform the Steering angle sensor(SAS) calibration.