the lan system in the fault diagnosis system and its control method

摘要

this invention is a vehicle lan system in the fault diagnosis system and its control method about the action, especially the module to control the majority of ECU (100) and a fault diagnosis request instruction data and the command data is output MUT (200) and MUT (200); the output of the fault diagnosis request instruction data and the command data from the group of the department of MUT through the input of the command, and the data of the ECU (100), the fault diagnosis request instruction data according to the lan communication format selected by the ECU (send 100) and the ECU (100) through the lan data transmission line fault diagnosis in response to output, a data input, aMUT signal into data format, from the group of the department of MUT through MUT (200) is used in the fault diagnosis ECU (300), including the characteristics of the area, such as a vehicle of the invention is to ECU lan network uc6cd link. from the MUT is part of. a ECU is responsible for, and the ECU lan network fault diagnosis is uc6cd from each other ECU's fault diagnosis information processing to be able to achieve in each, each ECU fault diagnosis related to the iso 9141 the ucf5cuc744 support device and program the flashlight also not less, distribution, vehicle design and manufacturing process can be simplified, but also the whole weight is light, it is effective.