Data Link Communications

DATA LINK CONNECTOR (DLC)
The Data Link Connector (DLC) terminal 2 contains the class 2 serial data link.

The DLC also provides a power source and Signal Ground for the scan tool as follows:
^ Battery voltage at the DLC terminal 16 (circuit 40)
^ Power Ground at terminal 4 (circuit 150)
^ Signal Ground at terminal 5 (circuit 451)

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 Radio.
^ 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.