Class 2 Serial Data Link

The class 2 serial data link in this vehicle is configured in a star which means, there is no redundant path for the serial data to flow through, in the event that the conductor feeding a module develops an open condition that module will not be able to communicate. The following modules use the Data Link network to communicate with each other:
^ The Body Control Module (BCM)
^ The Electronic Brake Control Module (EBCM)
^ The Powertrain Control Module (PCM)
^ The Inflatable Restraint Sensing and Diagnostic Module (SDM)
^ The Integrated Radio Chassis (IRC)

The class 2 serial data link allows a scan tool to communicate with the above modules for diagnostic and testing purposes.