Circuit Description
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
The Vehicle Stability Enhancement System (VSES) uses inputs from the steering wheel position sensor (SWPS) and the yaw/lateral acceleration sensor to determine if the vehicles steering is centered. The steering centered self calibration occurs when the vehicle travels in a straight path for greater than 10 seconds.
Variation of the SWPS alignment in the steering column is calibrated out by recording a bias value. The bias value is calculated by using inputs from the SWPS and the Yaw/Lateral acceleration sensor.