A VCI (Vehicle Communication Interface) Diagnostic Unit is a device used in automotive diagnostics to connect a vehicle's onboard diagnostic system (OBD-II) with a computer or diagnostic tool. The VCI allows for communication between the vehicle's ECU (Engine Control Unit) and diagnostic software, enabling the reading and clearing of trouble codes, monitoring of various vehicle parameters, and sometimes performing reprogramming or configuration tasks.
To use the VCI diagnostic unit with your computer, you'll need to install a Windows driver. This driver ensures that your computer can communicate with the VCI unit and allows diagnostic software to interact with the vehicle.