Kia Cee'd: ESP(Electronic Stability Program) System / Yaw-rate and Lateral G Sensor Description and operation

Kia Cee'd JD Service Manual / Brake System / ESP(Electronic Stability Program) System / Yaw-rate and Lateral G Sensor Description and operation

Description

When the vehicle is turning with respect to a vertical axis the yaw rate sensor detects the yaw rate electronically by the vibration change of plate fork inside the yaw rate sensor.

If yaw velocity reaches the specific velocity after it detects the vehicle'yawing, the ESP control is reactivated.

The later G sensor senses vehicle's lateral G. A small element inside the sensor is attached to a deflectable leverarm by later G.

Direction and magnitude of lateral G loaded to vehicle can be known with electrostatic capacity changing according to lateral G.

Specifications

Description		Specification	Remarks
Operating voltage		10 ~ 16V
Output signal		CAN Interface
Operating temperature		-40 ~ 85°C (-40 ~ 185°F)
Yaw-rate sensor	Measurement range	-75 ~ 75°/sec
Yaw-rate sensor	Frequency response	15 ~ 45Hz
Lateral G sensor	Measurement range	-14.715 ~ +14.715g
Lateral G sensor	Frequency response	50Hz ± 60%

External Diagram

ESP Control Module Repair procedures

Removal [LHD] 1. Turn the ignition switch OFF. 2. Pull up the lock of the HECU connector (A) , then disconnect the connector. ...

Yaw-rate and Lateral G Sensor Repair procedures

Removal 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Pull the passenger seat towards the front till ...

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