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汽车专业英语,Unit7DiagnosticScanToolandOscilloscope第七单元故障诊断仪和示波器,7-1DiagnosticScanTool(#1)故障诊断仪,KingtecDiagnosticSystem金德故障诊断仪，金德故障诊断系统,Tech2=Tech2ScanTool#1diagnostictesterTECH2故障诊断仪,TouchPanelTypeTester触摸屏式故障诊断仪，触摸屏式测试仪,VAS5051=Vehiclediagnostic,testingandinformationsystem5051（大众公司）5051型车辆诊断、测试和信息装置,WhatIsHand-heldTester?,TheDTCsthatarestoredintheECUcanbedisplayedonahandheldtesterbyestablishingcommunicationdirectlywiththeECU.Inaddition,thehand-heldtestercancleartheDTCsfromtheECUsmemory.Thehand-heldtesterprovidesotherfunctionssuchasdisplayingtheinformationdatabycommunicatingwiththeECUbyvarioussensors,orservingasavoltmeteroranoscilloscope.,7-2Tech2ScanToolTech2故障诊断仪(#1),softkey软键selectkey选择键actionkey作用键functionkey功能键,YES是，可以ENTER进入，键入EXIT退出NO不SHIFT转换PWR=power电源,WhatIsDiagnosis?,Theon-boarddiagnosticsystemisthevehiclesself-diagnosisfunctionthatisprovidedbytheECU(ElectronicControlUnit).Uponreceivingthesignalsfromthesensorsthatdetecttheconditionsofthevehicle,theECUtransmitssignalstotheactuatorsoptimallyforthecurrentconditions.TheECUreceivessignalsfromthesensorsintheformofvoltage.TheECUcandeterminetheconditionsofthesystembydetectingthechangesinthevoltageofthesignalsthatareoutputbythesensors.Thus,theECUconstantlymonitorstheinputsignals(voltage),comparesthemtothestandardvaluesthatarestoredintheECUsmemory,anddeterminesanyabnormalconditions.,Thegraphontheleftshowsthecharacteristicsofawatertemperaturesensor.Normally,thevoltageofthewatertemperaturesensorshouldvarybetween0.1Vand4.8V,ifavoltagewithinthisrangeisinput,theECUdeterminesthattheconditionisnormal.Ifitisashortcircuit(theinputvoltageislessthan0.1V)oranopencircuit(theinputvoltageismorethan4.8V),theECUdeterminesthatitisabnormal.IftheECUdeterminestheinputsignaltobeabnormal,theECUilluminatestheMIL(MalfunctionIndicatorLight)toalertthedriverandstoresaDTC(DiagnosticTroubleCode)initsmemory.,7-3TouchPanelTypeTesterOperation触摸屏式故障诊断仪操作,一.设定菜单,二.应用,三.诊断菜单,InterpretScanToolDatatoDetermineSystemCondition,AscantoolisatestcomputerthatcommunicateswiththePCMandotheronboardcomputersofavehicle.ThescantoolreadsanddisplaysdiagnosticinformationprovidedbythePCMsuchasDTCsandsystemoperatingdataorparameters.DatatransmittedtothescantoolfromthePCMincludebothdigitalandanalogvaluesDigitalparametersareoftencalledswitchparametersorsignalsandareeitheronoroffhighorlowyesornoAnanalogparameterprovidesasignalvaluewithaspecificminimum-to-maximumrangeThesekindsofdataincludeanalogvoltagereadingspeedsignal,temperaturereadingsandfrequencyranges.,EveryitemofdatatransmittedfromthePCMtoascantoolhasspecificvalueofsignalrangedescribedinthevehiclespecifications.Youmusthaveaccesstoorknowledgeofthesespecificationsandcomparethemtothescantoolreadingstoidentifyasystemfault.ScantoolreadingsthatidentifyanopenorashortcircuitareamongtheeasiesttorecognizeIfaresistivesensordisplaysascantoolreadingatornearthe5.0voltreferencevoltageonwhichmostsuchsensorsoperatethesensorcircuittothePCMisopenIfthescantoolvoltageforsuchasensorisatornear0voltthecircuitisprobablygrounded.,7-4DTCsDetectionItem故障码检测项目,ScantoolreadingofPCMinputandoutputsignalsreflectvaluesasprocessedbythePCM.InsomesystemsasensorfailurewillcausethePCMtoignorethesignalfromthefailedsensorandoperateonbackupvaluesstoredinitsownmemory.Inthiscase，thePCMmaytransmitthebackupvaluestothescantoolinplaceofthefailedsensorsignal.Ifanyparticularscantooldatareadingdoesnotmakesenseinrelationtoparticularproblemorsymptom,youshouldtestthesystemcomponentdirectlywithavoltmeter,ohmmeter,oscilloscope,frequencycounter,orothertestequipment.OBDdiagnosticstandardsrequireauniformlibraryofdiagnostictroublecodes(DTC)tobeusedbyallcarmakers.Additionally,allOBDsystemsmusttransmitabasiclistof16dataitemstoascantool.Carmakersarefree,howeverto“enhance”theonboarddiagnosticcapabilitiesoftheircontrolsystems.ManysystemsprovidemuchmorethantheminimumOBDdiagnosticdatarequirements.,7-5ScanToolDataTable（一）#1诊断仪数据（一）#1,DataStreamandIndication,7-6ScanToolDataTable（二）故障诊断仪数据表（二）,OutlineofOBD/MOBD,TheMOBD(MultiplesOn-BoardDiagnostic)systemenablesahand-heldtestertodirectlycommunicatewiththeECUwhenthetesterisconnectedtotheDLC3onthevehicle,inordertoreadDacesanddata.1.CharacteristicsofMOBD:Destinations:EuropeandGeneralCountries5digits(P#),(B#),and(C#)*Each“#”indicatesanumberoranalphabet.ForsomemodelswithdieselEFI,only2-digitDaceswillbedisplayedevenwhenthetesterdirectlycommunicated.HoweverisitpossibletoreadDTCindetailthroughusingthesub-code(1)or(2)thanMILblinkingpattern.2.PrincipalfunctionsofMOBD:AbletoreadDacesAbletoreadtheECUdataAbletoperformactivetests,7-7OtherAbbreviationsofScanTool故障诊断仪中其它缩略语,Accaccessory附件accacceleration加速度，加速A/CWOT=A/CClutchCutWide-open-throttle节气门全开时空调离合器断开ACV=alternatingcurrentvoltage交流电压A/Fairfuelratio空燃比ASR=anti-slipregulation牵引力控制，防滑调节A/T或ATautomatictransmission自动变速器AVR=average平均，平均的B=battery(positive)voltage蓄电池电压BAbrakeassist制动辅助装置CKPcrankshaftposition曲轴位置CMPcamshaftposition凸轮轴位置VSC=vehiclestabilitycontrol”,DCV=directcurrentvoltage直流电压DLC=datalinkconnector故障诊断插座ELDelectricalloaddetect电气负荷检测EPS=electronicpowersteering电子动力转向ESPelectronicstabilityprogram电子稳定程序（德系车用法，相当于“车辆稳定性控制装置FREQ=frequency频率FTfueltrim燃油修正IDidentification标识，标识符I/Minspectionandmaintenance检查/维护(常指排放控制方面的检查/维护)IPCinstrumentpanelcluster组合仪表ISC=idlespeedcontrol怠速控制，怠速空气控制ISSinputshaftspeed输入轴转速,max=maximum最大的min=minimum最小的OSSoutputshaftspeed输出轴转速PSP=powersteeringpressure动力转向油压PWM=pulsewidthmodulation脉冲宽度调制，脉宽调制PROMprogrammablereadonlymemory可编程只读存储器SIRsupplementalinflatablerestraint辅助充气约束装置SRSsupplementalrestraintsystem辅助约束装置SW=switch开关TFRtransmissionfluidpressure变速器油压TWCthreewaycatalyticconverter三效催化转化器VSC=vehiclestabilitycontrol车辆稳定性控制装置,OBD/EUROSTAGEOBDMONITORINFORMATION,欧洲阶段排放标淮OBD监测器信息,7-8VAG5051DisplayVAG5051显示屏,Vehicleself-diagnosis车辆自诊断Selectvehiclesystem选择车辆系统01-Engineelectronics01-发动机电子设备41-Dieselpumpelectronics41-柴油泵电子设备02-Gearboxelectronics02-变速器电子设备12-Clutchelectronics12-离合器电子设备22-All-wheeldriveelectronics22-全轮驱动电子设备03-Brakesystemelectronics03-制动系统设备14-Suspensionelectronics14-悬架系统设备24-Tractioncontrolsystem24-牵引力控制系统设备34-Self-levelingsuspension34-自调平悬架15-Airbag15-安全气囊25-Immobilizer25-防盗器，阻断器35-Centrallocking35-中控门锁45-Interiormonitoring45-舱内监控装置55-Headlightrangecontrol55-前照灯照明范围控制装置TestInstruments测试设备Goto转到，到，去Print打印Help帮助,VehicleSelf-diagnosis车辆自诊断Selectdiagnosticfunction选择诊断功能02-Interrogatefaultmemory02-查询故障存储03-Finalcontroldiagnosis03-最终控制诊断04-Basicsetting04-基本设定05-Erasefaultmemory05-擦除故障存储06-Endoutput06-结束输出07-Codecontrolunit07-控制模块编码08-Readdatablock08-读取数据块09-Readindividualmeasuredvalue09-读取单个测量值10-Adaptation10-匹配11-Loginprocedure11-进入编程Updateprogramming重新编程,7-9DSODisplay=DateStorageOscillographDisplay数字式存储示波器显示屏,Testinstruments测试设备DSO=DataStorageOscillograph数字式存储示波器Automode自动模式V/DIV.=volt/division伏/格Ms/DIV.=millisecond/division毫秒/格Freezeframe1保持帧，冻结帧1ChannelA通道AChannelB通道BTriggermode触发模式Measuringmode测量模式Millimeter毫米，mmDefaultmeasurement系统默认测量Coupling(电子学)耦合Goto转到，到，去Print打印Help帮助,InformationofMultiFunctionDisplay,1.TripInformationOUTSIDETEMPConsumptionAfterRefuelingMPGCruisingRangemilesCruiseAverageSpeedMPHDistancemilesMenuMapDVDSuspendGuidanceVolumeSelectUser,MyPlacesSetup,2.DiagnosisCheckMenuEMVOKNAVIOKAUDIOH/UOKG/WOKCAMERAOKDSP-AMPOKNextPageMemoryCLRRecheck,
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