Yaw rate sensor (658): Notes

Fig 1: Identifying Yaw Rate Sensor (658)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Circuit Diagram - Yaw Rate Sensor (658)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The yaw rate sensor comprises a combined micromechanical yaw rate sensor and lateral acceleration sensor. It is located on a bracket on the exhaust pipe tunnel ahead of the gear lever. This location has been chosen as the sensor should be positioned as close as possible to the car's centre of gravity and centre line (X-axis).

Its housing is hermetically sealed and filled with nitrogen to protect the components from being affected by the environment. The sensor is used to measure the physical forces of the yaw rate and the lateral acceleration of the vehicle.