protocolscan-busobd-ii

Does CAN bus pinout differ in cars?

I am doing research on CAN bus and the CAN protocol. Does each car model have a different pinout on the OBD-II port? Or is it the same on all cars?

P.S.: If it differs, is there a database for it?

Solution

  • Wikipedia to the rescue:

    OBD-II is an improvement over OBD-I in both capability and standardization. The OBD-II standard specifies the type of diagnostic connector and its pinout, the electrical signalling protocols available, and the messaging format.