Lateral Acceleration Sensor (Only DSTC)

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2009 Volvo S60, 2008 Volvo S60, 2007 Volvo S60, 2006 Volvo S60, and 2005 Volvo S60. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Side Acceleration Sensor Signal

Courtesy of VOLVO CARS OF NORTH AMERICA.

The lateral acceleration sensor is positioned on the same bracket as one of the yaw rate speed sensors in the center console under the storage compartment.

The information from the lateral acceleration sensor is used to calculate the stability functions in the ABS control module. Analog signals are used (0-5 V), where 2.5 V corresponds to no acceleration, voltage lower than 2.5 V corresponds to acceleration to the right and voltage greater than 2.5 V acceleration to the left. 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 sensor is of the capacitance type. There are diagnostics for the sensor.

When replacing the side acceleration sensor the ABS control module must be calibrated according to the information in appropriate diagnostics tool vehicle communication or manually via a test drive.