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

Removal
1.
Turn the ignition switch OFF and disconnect the negative (-) battery
cable.
2.
Remove the battery (A) and ECM (B).
...
Removal
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Pull the passenger seat towards the front till ...
Other information:
Replacement
1.
Remove the front door module.
(Refer to Front Door - "Front Door Module")
2.
Remove the front door outside handle base (A) by pushing in the lock
pins located in the back.
...
Inspection
1.
Check that the red light flickers when the door lock or unlock button
is pressed on the transmitter.
2.
Remove the battery (A) and check voltage if the red light doesn't flicker.
Sta ...