Class 2 Serial Data Link

The class 2 serial data link allows the following modules to communicate with each other:

• The audio amplifier (AMP)
• The auxiliary gage center
• The body control module (BCM)
• The electronic brake control module (EBCM)
• The inflatable restraint sensing and diagnostic module (SDM)
• The instrument panel cluster (IPC)
• The memory seat module (MSM)
• The powertrain control module (PCM)
• The radio
• The remote control door lock receiver (RCDLR)
• The roof/door module (RDM)

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

The class 2 serial data link on this vehicle is a ring/star configuration. The class 2 serial data circuits are bussed together via the DLC connector and SP201. Refer to Data Link Communications Component Views  for the location of the DLC and SP201.