For 1990-2009 cars only
The data link connector (DLC) contains the following serial data links:
| • | Class 2 |
| • | Entertainment and Comfort (E&C) |
The DLC also provides a power source for the scan tool:
| • | Unswitched voltage (B+) at DLC terminal 16 (circuit 640) |
| • | Ground at terminal 4 (circuit 1450) and terminal 5 (circuit 1550) |
