汽车专业英语ppt全套配套课件优化word教案参考译文Chapter 7-1.4&7.2.ppt

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1、Chapter7CommonSpecialServiceToolsandEquipments7.1FunctionsofDiagnosticEquipments7.2OperationofOTCEnhancedMonitorscantoolChapter7CommonSpecialServiceToolsandEquipments7.1FunctionsofDiagnosticEquipmentstechnician[tek'niʃən]n.技术人员，技师diagnosis[¸daiəg'nəu

2、sis]n.诊断，诊断结果，诊断书capture['kæpt∫ə]v.捕获，夺得，记录，拍摄coupling['kʌpliŋ]n.结合，耦合，联接器misadjusted[¸misə'dʒʌstid]a.失调的，误调的spike[spaik]n.长而尖的东西，尖端电压，峰值slope[sləup]n.倾斜，坡度，斜面，斜率upslope['ʌp¸sləup]n.上坡Chapter7CommonSpecialServiceToolsandEquipments7.1FunctionsofDiagno

3、sticEquipmentsdownslope['daunsləup]n.下坡；a.下坡的commutator['kɔmjuteitə]n.换向器，整流子premature[¸premə'tjuə]a.早期的，过早的quenching['kwentʃiŋ]n.猝熄，淬熄problematic[¸prɔbli'mætik]a.问题的，疑难的，不确定的scanner['skænə]n.扫描仪，诊断仪pinoutn.引线，接脚分布Chapter7CommonSpecialServiceToolsand

4、Equipments7.1FunctionsofDiagnosticEquipments4.ScanToolsAscantool(orscanner)isprobablythemostfamiliartooltoanyoneworkingwithtoday’scomputerizedsystems.Figures7–25showsatypicalscantool.However,itisimportanttorecognizethedistinctabilitiesofascantool.Pur

5、poseCodePulling.Ascanner’sabilitytopullcodesincludesbothpullingDTCsfromacomputer’smemoryandcausingthecomputertoperformaself-testofthesystemanddisplaytheresultingDTCs.Chapter7CommonSpecialServiceToolsandEquipments7.1FunctionsofDiagnosticEquipmentsFigu

6、re7–25AtypicalscantoolthatcanbeusedtoretrievedatastreaminformationfromthePCM.FunctionalTests.ScantoolscanalsobeusedtoperformfunctionaltestsSomescantoolmanufacturersrefertothesetestsasspecialtests.Theprimaryandbest-knownfunctionaltestistheactivecomman

7、dmode,inwhichthescantoolisabletocommandon-boardcontrolmodulestoperformcertainactions,suchasenergizingacoolingfanrelayoracanisterpurgeventsolenoid.Acommonuseofsuchatestistohelpthetechnicianquicklynarrowaproblemdowntotheinputsideortheoutputsideofthecom

8、puter.Forexample,iftheelectriccoolingfandoesnotcomeonduringnormalvehicleoperation,resultinginanover-heatingconditionoftheengine,ascantoolmaybeusedtocommandthePCMtoenergizethecoolingfanrelay.Chapter7CommonSpecialServiceToolsandEquipments7.1Functionsof