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). The ECM provides the EBCM with engine RPM data via the serial data message. The EBCM uses this information for traction control system (TCS) operation.
The CAN bus circuit is monitored continuously after the ignition switch is turned to the ON position.