关键词: 控制器局域网络总线；故障诊断；案例分析；吉利 EV450

Abstract: Controller area network bus technology has great advantages in the automotive network communication, which can well realize the information exchange between the electronic control units. It can solve the problems existing in the traditional point-to-point information interaction, such as large number of wiring, high cost, high maintenance difficulty, complex work and nonexpandability. This paper takes the controller area network bus of Geely EV450 as an example, studies and analyses the fault diagnosis and elimination methods of controller area network bus, and the corresponding fault diagnosis cases are provided, which will provide some reference for automotive technicians and can be applied to the actual maintenance and diagnosis process.

Key words: Controller area network bus; Fault diagnosis; Case analysis; Geely EV450