基于FTA法的车辆电控系统故障检修

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中图分类号：U463.6 文献标识码：B 文章编号：1003-8639（2025）07-0190-03

FaultRepairofVehicleElectronic Control System Based on FTA

LinYiyi，LiYan

（QingyangVocational and Technical College，Qingyang 745ooo，China）

【Abstract】 This paper through a 2018 FAW-Volkswagen Magotan B8L2.0T carelectric control system Fault example，basedonFTA（Fault Tree Analysis）method，the detailedanalysisandreasonablereasoningofvehicle fault phenomena，scientific development of maintenance technology.Usedigital multimeter，osciloscopeand other special automotive diagnosticequipmenttoquicklyandacuratelylocate thevehicle fault，quicklyget thefault diagnosis result， analyzethecauseofthefault，andfinalldeterminethefaultpoint.Itrealizestheprecisionoffaultmaintenance judgmentof automobileelectroniccontrol system，thesimplicityof maintenance process，andthesaving of maintenance cost，whichcan beusedasareference for automobile maintenanceenterprises toimprove work eficiency，optimize processflow，and improveservice quality，andsolve the typicaldailytasksof mechanicaland electrical maintenance posts in automobile maintenance enterprises.

【Key Words】Magoton B8L2.OTcar；electronic control system failure；FTA law；digital multimeter；osciloscope; faultdiagnosisanalysis

1故障现象

一辆2018款一汽大众迈腾B8L2.0T轿车，发动机型号CUGA，车辆在学生实训课结束后由实训指导教师检查并复位教学用车时，发现起动机不转，发动机无法着车，对车辆进行初步检查。（剩余1705字）