汽车专业英语ppt全套配套课件优化word教案参考译文Chapter 8.2-8.3.ppt

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1、复习提问（教师说出中文故障术语，同学回答对应英文术语）Chapter8ReadingRepairManuel8.1DiagnosingAutomaticTansaxle（A541E）8.2HowtoReadandUseWiringDiagrams8.3HowtoreadtechnicalservicebulletinChapter8ReadingRepairManuel8.2HowtoReadandUseWiringDiagrams8.1DiagnosingAutomaticTansaxle（A541E）8.2H

2、owtoReadandUseWiringDiagrams8.2.1ElectricalSymbols8.2.2WiringColorCodes8.2.3SamplesofReadingandusingWiringDiagramHowtoReadAWiringDiagramHowtouseWiringDiagram8.3Howtoreadtechnicalservicebulletintool8.2HowtoReadandUseWiringDiagramsHowtoReadaVolkswagenWiringDiag

3、ram,SeeFigure8-9&10Figure8-98.2HowtoReadandUseWiringDiagramsHowtoReadaWiringDiagram（Volkswagen）Figure8-10Chapter8ReadingRepairManuel8.2HowtoReadandUseWiringDiagramsVolkswagenPassatairconditioningblowercircuitisshowninthefollowingwiringdiagram.Studycarefullyth

4、ecircuit(Figure8-11)andthendescribetheblower’soperation.Figure8-11·HowtoDiagnoseaFaultbyUsingtheWiringDiagramWiringdiagramsareusedformalfunctiondiagnosisinthevehicleelectricalsystemoronelectricalcomponents.Thefollowingexampleshowsthemalfunctiondiagnosisproces

5、sontheelectricalgearboxcontrolusingawiringdiagram.Themanufacturer'sinstructionsmustbeobservedduringmalfunctiondiagnosis.(B1-drivingspeedsensor,B2-gearboxinput-speedsensor,X92-diagnosisconnection,X34-ECUplug,gearboxcontrol,S3-multifuctionswitch,A35-solenoidval

6、ves)DiagnosticProcedureFaultcode010C:Pressure-regulatorsolenoidvalve,shortcircuittoearth/opencircuit.1.ReadoutfaultmemoryThefaultcodeindicatesafaultonthecomponentoronthecablesbetweenthecomponentandtheECU.2.DisconnectECUplugfromECUCheckingofcomponentsandcables

7、betweenthecomponentandtheECUisoftenperformedintheformofaresistancemeasurement.TheplugmustbedetachedfromtheECUforthispurpose.Warning:Turnoffignitionbeforehand!InthecircuitdiagramthedetachedplugisindicatedbytheinterruptedcablestotheECU.3.DeterminetestpointsThet

8、estpointsfortheresistancemeasurementintheECUplugmustthenbedeterminedusingthecircuitdiagram.Here:Measurementoftheconductorandcoilresistancebetweencontactnumbers22and58withanohmmeter(seeFig