Hyundai Santa Fe (TM): ESP(Electronic Stability Program) System / Yaw-rate and G Sensor. Description and operation
The yaw rate and G sensor is included inside the air bag control module (SRSCM).
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.

Description
Introduction of quick brake warning system (ESS)
In case of quick brake by driver, the brake lamp or turn signal is blinked to
warn against the vehicle at rear.
Specifications
Description
Specification
Operating voltage
8 - 16V
Output signal
CAN Interface
Operating temperature
-40 - 85°C (-40 - 185°F)
Yaw-rate sensor
Measurement range
-128 to +128°/sec
Frequency response
15 - 45Hz
G sensor
Measurement range
-1.
Other information:
Description
Rear Corner Radar is a system that measures the relative speed and distance
from the following vehicles by using two electromagnetic wave radar sensors
attached to the rear bumper, and detects any vehicle within the blind spot zone
and gives off alarm.