Yaw rate sensor (Only DSTC)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Volvo V70, 2006 Volvo V70, 2005 Volvo V70, 2004 Volvo V70, and 2003 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Yaw Rate Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

The two yaw rate sensors are in the passenger compartment. One is positioned in the center console under the storage compartment and the other under the right-hand front seat. The gyro element sensors provide information about the yaw rate speed of the vehicle (lateral speed) and are used to calculate the stability functions in the ABS control module. The information is transmitted via analog signals (0-5 V), where approximately 2.5 V is the normal value when traveling straight ahead. An in-built filter filters the signal so that no interference from high frequencies occur and so that vibrations in the car body do not affect the different calculations in the control module.

The two sensors are installed in opposite directions. The only reason for two sensors is for safety. They measure the same angle and provide a combined average.

The sensors are piezoelectric. There are diagnostics for the sensors.