Kia Optima: Yaw-rate and Lateral G Sensor. Description and OperationDescription
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 ESC 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.

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

Inspection
Yaw-rate and Lateral G Sensor. Repair proceduresTrunk Lid
To open the trunk, insert the key into the lock and turn it clockwise until
an audible “click” is heard.
To close the trunk, use both hands to push the trunk lid down until the
lock ...
Trunk room lamp
The trunk room lamp comes on when the trunk is opened.
CAUTION
The trunk room lamp comes on as long as the trunk lid opens. To prevent unnecessary
charging system drain, close the trunk lid sec ...
ESC Operation Mode
ESC Hydraulic System Diagram
1.
ESC Non-operation : Normal braking.
Solenoid valve
Continuity
Valve
...