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 lateral G sensor senses vehicle’s lateral G. A small element inside the sensor is attached to a deflectable lever arm by lateral G.
Direction and magnitude of lateral G loaded to vehicle can be known with electrostatic capacity changing according to lateral G.
A failure is detected if the Yaw rate & lateral G sensor’s message was not received or HECU detects CAN Bus off state for more than the specified failure detection time.
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