Method, system and storage medium for realizing diagnostic apparatus of in-vehicle infotainment system

The invention relates to a method and a system for realizing a diagnostic instrument by a vehicle machine, and a storage medium. The method comprises the following steps: M1, starting a vehicle, issuing a vehicle diagnosis instruction based on a vehicle SOC system, packaging the issued vehicle diagnosis instruction, and outputting the packaged vehicle diagnosis instruction; m2, transmitting the packaged vehicle diagnosis instruction to a vehicle MCU (Microprogrammed Control Unit) for deblocking processing, assembling the deblocked vehicle diagnosis instruction, and outputting a CAN (Controller Area Network) message of vehicle diagnosis; and M3, transmitting the vehicle diagnosis CAN message to a vehicle body CAN bus, diagnosing each part of the vehicle, and outputting vehicle diagnosis result data information. According to the invention, the production cost of the whole vehicle is saved, the problem can be quickly positioned through the diagnostic apparatus of the vehicle machine during troubleshooting, and s