Circuit/System Description
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
The electronic brake control module (EBCM) sends wheel speed sensor information to the engine control module (ECM). The data is sent to the ECM through a serial data bus.