In recent years,with the development of technology,more and more engineering vehicles have applied CAN bus system.Compared with ordinary lines,CAN bus has the characteristics of relatively independent electrical systems,less correlation with each other,and relatively simple lines.As long as you can grasp the principle of CAN bus,the schematic diagram of each electrical system of the vehicle,the functions of each module of the CAN bus and its position on the vehicle,you can quickly and accurately eliminate the fault through the fault phenomenon.This paper aims at the application of message analysis of new energy construction machinery in fault diagnosis,and determines the cause of the fault through message acquisition and message analysis.
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