Kia Soul EV: ESP(Electronic Stability Program) System / Yaw-rate and Lateral G Sensor Description and Operation

Kia Soul EV (PS EV) 2015-2020 Service Manual / Brake System / ESP(Electronic Stability Program) System / Yaw-rate and Lateral G Sensor Description and Operation

Description

The yaw rate and G sensor is included inside the air bag control module (SRSCM).

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''s yawing, the ESC control is reactivated.

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

Direction and magnitude of lateral G loaded to vehicle can be known by the change in electrostatic capacity according to lateral G.

Specifications

Description		Specification	Remarks
Operating voltage		8 ~ 16V
Output signal		CAN Interface
Operating temperature		-40 ~ 85°C (-40 ~ 185°F)
Yaw-rate sensor	Measurement range	± 100°/sec
G sensor	Measurement range	± 1.8 g

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Yaw-rate and Lateral G Sensor Repair procedures

Removal 1. Remove the ignition key from the vehicle. 2. Disconnect the battery negative cable and wait for at least three minutes before beginning to work. 3. Disconnect the DAB, PAB, SAB, ...

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