Circuit/System Description
WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
The steering angle sensor shares a 12-volt ignition supply voltage with the electronic brake control module (EBCM) and the yaw-rate/lateral sensor. The EBCM applies a ground to the steering angle sensor low reference circuit, which is shared with the yaw-rate/lateral sensor. If equipped, this vehicle received the steering wheel position signal from the power steering control module (PSCM) over GMLAN.
The steering angle sensor provides a GMLAN signal output to the EBCM that represents the steering wheel degree of rotation. The EBCM utilizes this signal to calculate the driver intended driving direction.