1.Enter the diagnostic system You can select the corresponding vehicle type by selecting the display area on the left side of the main interface, and then select the brand, system and system function in the right model selection area to enter the CAR FANS C800 . For example: After entering the main interface of the car diagnosis, you can: click on the “truck series” -> “SANY” -> “Yuchai engine”, and then select the diagnostic function you want to test diagnostic tests. 2.Start Diagnostic After entering the system, the functions that can be implemented include: 1. Identification 2. Read Fault code 3. Erase Fault code 4. Actual Values 5. Actuators 6. Advance Functions:Adjustment/Settings、Function Test、Special function, calibration etc. Specific functions will be different according to different models of the brand and the system, take Bosch engine in Foton engine system as an example: 3.Identification Identification is the vehicle and system