2. Locate the vehicle’s DLC socket (OBDII Port). EN 3. Plug the TOPDON ArtiDiag900 BT Diagnostic VCI dongle into the vehicle’s DLC socket. 4. Turn the ignition on. The engine can be off or running. 5. Hold the Power button for 3 seconds to turn the TOPDON ArtiDiag900 BT on. The tablet will start initializing and enter the following interface. 7