Connector, Data Link: Operation: Operation
WARNING: This page is about a different car, the 2014 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
The Data Link Connector (DLC) is an industry-standard 16-way connector that permits the connection of a diagnostic scan tool to the Controller Area Network (CAN) data bus for interfacing with, configuring, and retrieving Diagnostic Trouble Code (DTC) data from the electronic modules that reside on the data bus network of the vehicle.