Kia Carens: ESP(Electronic Stability Program) System / Yaw-rate and G Sensor Description and operation

Kia Carens RP (2013-2018) Service Manual / Brake System / ESP(Electronic Stability Program) System / Yaw-rate and 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 electroniclly 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.
The longitudinal G sensor is installed in the yaw-rate sensor.
This longitudinal G sensor detects vertical acceleration of the vehicle, while the lateral G sensor detects lateral acceleration of the vehicle. The HECU uses these signals for the Hill start Assist Control function.

Specifications
Description
Specification
Remarks
Operating voltage
10 ~ 16V

Output signal
CAN Interface

Current Consumption
Max.140mA

Operating temperature
-40 ~ 85°C (-40 ~ 185°F)

Yaw-rate sensor
Measurement range
-75 ~ 75°/sec

Frequency response
15 ~ 45Hz (±3dB)

G sensor
Measurement range
-14.715 ~ 14.715m/s²

Frequency response
50Hz ± 60% (±3dB)


External Diagram

ESP Control Module Repair procedures
Removal 1. Turn the ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the battery (A) and ECM (B). ...

Yaw-rate and 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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