Kia Cadenza: ESC(Electronic Stability Control) System / Steering Angle Sensor Description and Operation

Kia Cadenza YG 2016-2024 Service Manual / Brake System / ESC(Electronic Stability Control) System / Steering Angle Sensor Description and Operation

Description

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.

Specification

Description		Specification
Operating voltage		8 ~ 16V
Operating temperature		-40 ~ 85°C
Current consumption		Max.150mA
Measuring range	Angle	-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 Speed 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 ±5°error.

1.	Connect the GDS.(CAN line or OBD connector)

2.	Turn ignition switch on.

3.	Press calibration button of the Steering Wheel Angle Sensor.

4.	HECU calibration procedure is performed. (Calibration records, DTC codes erasure)

5.	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).

–	ESC lights ESC OFF warning lamp when making an error in comparison with values of other sensors.

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