【摘要】本文详细的叙述了发动机自动熄火故障有关内容。首先需要对发动机工作原理、主要结构、分类以及点火系统结构这些最基础的东西进行详细理解，才能使我们迈向更复杂的问题。再理解了发动机理论部分后，我们就可以继续下一步了。既然是对汽车发动机自动熄火的分析，那肯定是要在对故障现象进行充分了解之后分析出故障原因；然后在了解诊断相关要点的基础上开始故障诊断地一般步骤。然后通过对汽车进行分析，明了且完整的叙述整个案例分析的所有过程。最后通过对汽车发动机自动熄火故障维修案例的分析更进一步的加深了我们对汽车发动机此种故障的理解，使得我们今后在处理类似故障的时候就显得游刃有余了；同时通过对汽车发动机各方面的理解，也使得我们对汽车有了一个更加全面的理解。【关键字】汽车发动机故障案例熄火分析维修【abstract】Inthispaper,thecontentsofengineauto-flameoutfaultaredescribedindetail.Firstofall,weneedtohaveadetailedunderstandingofthebasicprinciplesofengine,mainstructure,classificationandignitionsystemstructure,sothatwecanmovetowardsmorecomplexproblems.Afterweunderstandtheenginetheorypart,wecanproceedtothenextstep.Sinceitisananalysisoftheauto-stalloftheautomobileengine,itisdefinitelynecessarytoanalyzethecauseofthefailureafterafullunderstandingofthefaultphenomenon;andthenstartthegeneralprocedureoffaultdiagnosisonthebasisofunderstandingtherelevantpointsofdiagnosis.Thenthroughtheanalysisofthecar,alltheprocessesofthewholecaseanalysisaredescribedandfullydescribed.Finally,throughtheanalysisoftheautoenginefailuremaintenancecase,wefurtherdeepenourunderstandingofthiskindoffailure.Sothatwecandealwithsimilarfailuresinthefutureappeartobeagoodjob;Atthesametime,throughtheunderstandingofvariousaspectsofautomobileengine,wealsohaveamorecomprehensiveunderstandingofthecar.【keyword】autoenginefaultcaseflameoutanalysisMaintenance目录1凯迪拉克XTS自动熄火故障诊断与维修........................51.1预约与准备工作..........................................51.1.1工作任务描述......................................51.1.2预约..............................................51.1.3准备工作..........................................61.2接车与制单..............................................61.2.1接车..............................................61.2.2制单..............................................71.3故障分析与诊断流程......................................102.3.1故障原因分析......................................102.3.2故障诊断过程......................................111.4交车与