Class 2 Serial Data Link

The class 2 serial data link allows the following modules to communicate with each other:
^ The Body Control Module (BCM)
^ The Electronic Brake Control Module (EBCM)
^ The Instrument Panel Cluster (IPC)
^ The Integrated Radio Chassis (IRC)
^ The Powertrain Control Module (PCM)
^ The Inflatable Restraint Sensing And Diagnostic Module (SDM)

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