Description
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
|
1. |
PURPOSE OF calibration
| A. |
On vehicle control, an ESC analyzes the intention of the
driver.
|
| B. |
An ESC recognizes a steering angle which a driver rotates
through the steering angle sensor.
|
| C. |
A steering angle sensor used in ESC adjusts 0° setting
of steering wheel through K-line or CAN communication.
|
|
|
2. |
STEERING ANGLE SENSOR (SAS) CALIBRATION METHOD
|
(1) |
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.
|
|
(2) |
Connect Scan tool to the vehicle.
|
|
(4) |
Select Steering angle sensor(SAS) calibration.
|
|
(5) |
Perform the Steering angle sensor(SAS) calibration.
|
|
(6) |
Perform the procedure continuously.
|
|
(7) |
The procedure is finished. Push the "ESC" key.
|
|
(9) |
Remove the scanner from the vehicle.
|
|
(10) |
Confirm the Steering angle sensor(SAS) calibration as
driving the vehicle.(turn left once, turn right once)
|
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Hyundai Elantra HD: Steering Angle Sensor. Description and Operation