Data Link Connector (DLC)
The data link connector (DLC) is a standardized 16-cavity connector. The DLC low speed serial data circuit is connected directly to the instrument panel (I/P) splice then to all other splices or modules. Connector design and terminal location is dictated by an industry wide standard, and is required to provide the following:
- Terminal 1 low speed GMLAN communications terminal
- Terminal 4 scan tool power ground terminal
- Terminal 5 common signal ground terminal
- Terminal 6 high speed GMLAN serial data bus (+) terminal
- Terminal 14 high speed GMLAN serial data bus (-) terminal
- Terminal 16 scan tool power, battery positive voltage terminal
With RPO HP2 the DLC also connects the high speed hybrid GMLAN bus to the scan tool for programming purposes. The terminal and circuits are as follows:
- Terminal 3 high speed hybrid GMLAN serial data bus (+) terminal
- Terminal 11 high speed hybrid GMLAN serial data bus (-) terminal