Kia Rio: Yaw-rate and G Sensor Description - ESC(Electronic Stability Control) System - Brake System - Kia Rio UB 2012-2019 Service ManualKia Rio: Yaw-rate and G Sensor 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 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.
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

G sensor
Measurement range
-14.715 ~ 14.715m/s²

Frequency response
50Hz ± 60% (±3dB)


External Diagram

Yaw-rate and G Sensor Removal


Rear Wheel Speed Sensor Inspection
1. Measure the output voltage between the terminal of the wheel speed sensor and the body ground.    ...

Yaw-rate and G Sensor Removal
1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the front seat (LH) assembly. (Refer to the Bo ...

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