Circuit Description
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The controller area network (CAN) serial data circuit is a high speed serial data bus used to communicate information between the engine control module (ECM) and the electronic brake control module (EBCM). Traction control is simultaneously controlled by the ECM and the EBCM. The ECM sends engine torque data via serial data communications to the EBCM. The EBCM uses this message to determine traction control operation.
The CAN bus circuit is monitored continuously after the ignition switch is turned to the ON position.