The DLC is rectangular in design. It can accept up to 16 terminals. The DLC in the graphic to the right shows many common pin designations, but does not represent any specific vehicle.
OBD II DaimlerChrysler vehicle will have power at pin 16, and ground at pins 4 and 5. All other pins vary by year and model. All applications use the SCI circuits, but the pin assignments vary. All vehicles will utilize either the PCI bus, or the CCD bus circuits.
Both the DLC and Scan Tool have latching features that ensure that the Scan Tool will remain connected to the vehicle during operation.
Common uses of the Scan Tool while connected to the DLC include: