14 CAN Low CAN ISO 15765-4 and SAE J2284ĬAN protocol uses 2 wires to communicate, this is CAN low (CANL) wire. 4,5 Ground Chassis ground and Signal ground 6 CAN High CAN ISO 15765-4 and SAE J2284ĬAN protocol uses 2 wires to communicate, this is CAN high (CANH) wire. This is the positive pin of the protocol.

10 SAE J1850 Bus- Commonly found on GM vehicles.

General OBD2 pinout Pin Pin Name Description 1,3,8,9,11,12,13 Blank Manufacturer discretion - different among cars 2 SAE J1850 Bus+ Commonly found on GM vehicles. Pin 1, 3, 8, 9, 11, 12, 13 are manufacturer discretion, which means they are used for different purposes in different cars.