Hyundai Equus: Steering Angle Sensor Description and Operation - ESP(Electronic Stability Program) System - Brake System - Hyundai Equus VI 2009-2023 Service ManualHyundai Equus: Steering Angle Sensor Description and Operation

Steering Wheel Angle Sensor detects rotating direction of the vehicle. Rotating direction detected by the sensor is communicated with HECU as CAN signal involving information about the angle through CAN communication line.
HECU detects speed of the steering wheel handling and the angle with this CAN signal. HECU also uses this signal as the input signal to control anti-roll.

Operating voltage
8 ~ 16V
Operating temperature
-40 ~ 85°C
Current consumption
Measuring range
-900 ~ 900°
Angular velocity
0 ~ 1016°/sec

Circuit Diagram

Calibration (Setting up the zero angle)
Steering Wheel Angle Sensor of a absolute angle type (CAN type) measures the angle under the standard of the zero angle set
Calibration must be performed as following cases.
Replacement of the Steering Wheel Angle Sensor
Replacement or repair of the Steering column
Detection of DTC codes (C1260, C1261)
Replacement of the sensor cluster
Replacement of HECU
Calibration procedure
Perform wheel alignment and stand the steering wheel in a line within ±3°error.

Connect the GDS.(CAN line or OBD connector)
Turn ignition switch on.
Press calibration button of the Steering Wheel Angle Sensor.
HECU calibration procedure is performed.
(Calibration records, DTC codes erasure)
Turn ignition switch off after calibration procedure.
Confirm success or failure of calibration.
Warning lamp must not be lighted when driving test (Turning left and right).
The ESP system will light the ESP OFF warning lamp when system detects a sensor error.
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