GL 320 CDI (164.822) V6-3.0L DSL Turbo (642.940) (2008)
Yaw Rate Sensor: Description and Operation
GF42.45-P-5120GZ Yaw rate and lateral acceleration sensor, component description
Component Identification
The micro mechanical yaw rate sensor (micro mechanical yaw rate sensor AY pickup) is located in the vehicle interior. It records the rotational speed
of the vehicle about the vertical axis and the force of the lateral acceleration during cornering or skidding motions.
The pickup consists of one sensor to detect the rotational speed about the vertical axis and one sensor to detect the lateral acceleration. These sensors
are combined into one housing. This reduces installation space considerably.
Function
The micro mechanical sensor system converts the lateral acceleration and rotational speed about the vehicle's vertical axis into electrically usable
signals. The respective vehicle movements result in different displacements of the various types of masses.
Signal changes are recorded electronically and passed on to the ESP control unit via a CAN bus (Dynamics CAN) specially designed for the sensor to
the ESP control unit (N47-5).
Function of lateral acceleration
The measuring principle of the lateral acceleration sensor is based on a deflection/extension and mass system with capacitive detector. The voltage is