Data Link Connector: Description and Operation

The Data Link Connector (DLC) is a standardized 16 cavity connector. Connector design and location is dictated by an industry wide standard, and is required to provide the following:
^ Scan tool power battery positive voltage at terminal 16.
^ Scan tool power ground at terminal 4.
^ Class 2 serial data at terminal 2.
^ Common signal ground at terminal 5.