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To use the CReader 3001, you typically need to follow these steps:Connect the CReader 3001: Plug the device into your vehicle's OBD-II port. This port is usually located under the dashboard near the driver's seat.Turn on the Ignition: In most cases, you'll need to turn on the vehicle's ignition without starting the engine. This provides power to the CReader 3001.Navigate the Menus: Use the device's screen and buttons to navigate through the menus and select the functions you want. You can usually read diagnostic trouble codes (DTCs), view live data, and access various diagnostic functions.Read and Interpret Data: After selecting the appropriate function, the CReader 3001 will scan your vehicle's computer systems and display any trouble codes or data. You can then interpret this information to diagnose issues with your vehicle.