Operation Introduction The TOPDON ArtiDiag900 BT has 8 main modules: Diagnose, Services, OBDII, Update, History, Repair Info, Feedback, and Settings. EN 1. Diagnose This module has auto search (automatic scanning of car models' VIN), car model lists, a demo mode (demonstration of the diagnosis process), OBDII (10 emission-related module diagnosis). 1.1 Smart Diagnosis Plug the dongle into the vehicle’s DLC port, and tap “Diagnose” in the main interface. Tap "AUTOSEARCH” to start communicating with the dongle via Bluetooth. The system will automatically start scanning the vehicle’s VIN after establishing stable communication. 11