... . procotol: RS232 OP-COM-PC based Opel car diagnostic tool1. It covers almost all Opel cars, even ... new cars with CAN-BUS based diagnostic, such as Vectra-C, Astra-H, Zafira-B ... user many pin in the OBD connector, the diagnostic interface works as a multiplexer, and selects the ... mostly on the communication protocol. For example, order system, like Omega-BX25DT engine (ISO-9141-2) can ...