OP-COM-PC based car diagnostic tool 1. Operating voltage: 12V 2. Baud rate: ... 3. 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.2 ... Opel user many pin in the OBD connector, the diagnostic interface works as a multiplexer, and selects the appropriate pin ...