OBD故障诊断资料

OBD(ON-BOARDDIAGNOSTIC)System2006.11.目录•OBD法规概要•OBD法规比较•OBD主要法规内容•OBD诊断方法概要진단장비DTCFaultCodeDescriptionP0100MASSORVOLUMEAIRFLOWCIRCUITMALFUNCTIONP0101MASSORVOLUMEAIRFLOWCIRCUITRANGE/PERFORMANCEPROBLEMP0110INTAKEAIRTEMPERATURECIRCUITMALFUNCTIONP0115ENGINECOOLANTTEMPERATURECIRCUITMALFUNCTIONP1134O2SENSORCIRCUIT-TRANSITIONSWITCHTIMEMULFUNCTION/SLOP(BANK1SENSOR1)P1154O2SENSORCIRCUIT-TRANSITIONSWITCHTIMEMULFUNCTION/SLOP(BANK2SENSOR1)P1166O2SENSOR-CONTROLLERADAPTIONDIAGNOSISMALFUNCTION(BANK1)P1167O2SENSOR-CONTROLLERADAPTIONDIAGNOSISMALFUNCTION(BANK2)P0130O2SENSORCIRCUITMALFUNCTION(BANK1SENSOR1)P0150O2SENSORCIRCUITMALFUNCTION(BANK2SENSOR1)P0133O2SENSORCIRCUITSLOWRESPONSE(BANK1SENSOR1)P0153O2SENSORCIRCUITSLOWRESPONSE(BANK2SENSOR1)P0134O2SENSORCIRCUITNOACTIVITYDETECTED(BANK1SENSOR1)P0154O2SENSORCIRCUITNOACTIVITYDETECTED(BANK2SENSOR1)P0135O2SENSORHEATERCIRCUITMALFUNCTION(BANK1SENSOR1)P0155O2SENSORHEATERCIRCUITMALFUNCTION(BANK2SENSOR1)※故障相关信息目的②:为准确并迅速修理故障相关信息标准化目的①:废气相关部品的故障或者热化时给驾驶员提示的系统→修理向导OBD(ON-BOARDDIAGNOSTICS)是?OBD法规概要OBD(ON-BOARDDIAGNOSTICS)是?•车辆行驶中通过车辆中内装的Computer(On-BoardComputer)来检视废弃控制相关部品/系统如出现故障时通过MIL(MalfunctionIndicatorLight)给驾驶员提示的系统-防止废气相关部品故障导致废气增加•美国加利福尼亚大气保全局(CARB:CaliforniaAirResourceBoard)最初适用(91MY)-美国联邦环境厅EPA(EnvironmentalProtectionAgency)适用-之后加拿大/欧洲/韩国/日本适用•一般诊断用Computer是使用发动机控制COMPUTER(ECU/PCM)•单纯电子回路的断线/短路和部品热化为止监视•OBD法规中Monitoring项目/发生基准/使用故障代码(DTC:DiagnosticTroubleCode)/故障发生时的电阻项目等内容制定•故障发生时标准诊断装置(GST:GenericScanTool)可接近信息才可OBD法规概要–继续区分1991年···1996年···2000年···2004年2005年2006年北美欧洲国内OBD-IOBD-IIEOBD(美国OBD单纯化)KOBD强化OBD-IIOBD-1OBD-2强化OBD-2感应废气部品的短路/断路感应废气部品,系统的性能低下感应项目,方法强化量产车故障代码验证通讯标准化验证OBD缺陷确认检查•法规履历及对应现况OBD法规概要–继续OBD-IISystemConfigurationExample后氧传感器前氧传感器怠速阀空气流量传感器节气门位置传感器进气温度传感器凸轮轴位置传感器燃油管冷水温度传感器曲轴位置传感器碳罐电磁阀FuelTankPressureSensorCanisterCloseValveCanisterFuelTankECUOBD法规概要–继续OBD-ⅠOBD-ⅡEOBD•O2Sensor•EGRsystem•FuelSystem•ElectronicInputComponents•DiagnosticInformation•O2Sensor(Enhanced)•EGRsystem(Enhanced)•FuelSystem(Enhanced)•DiagnosticInformation•Catalyst/HeatedCatalyst•EngineMisfire•EvaporativeSystemLeakage•Thermostat•PCVSystem•VVTSystem•Standardization•ComprehensiveComponent•ElectronicInput/OutputComponents•←•NotDefined•←••←•←•←•PurgesolenoidCircuitContinuity•NotDefined•NotDefined•NotDefined•NotDefined•Emissioncontrolsystemcomponentsorsystems,oremission-relatedpower-traincomponentsorsystemswhichareconnectedtoacomputer,thefailureofwhichmayresultintailpipeemissionsexceedingthelimitsgiven•Anyotheremission-relatedpower-traincomponentconnectedtoacomputermustbemonitoredforcircuitcontinuity-美国/加拿大/韩国(汽油)欧洲/韩国(柴油)/中国OBD法规比较OBD主要法规内容1.一般事项OBD法规一般事项-部品的热化/故障导致E/M增加量不超过规定值的15%时，MIL中不提示，只进行功能Check--7℃以下,2450m以上海拔中不必要Monitoring-燃油Level15%以下时，诊断SystemDisable功能-MIL灯亮2DrivingCycle-故障感应后同样故障不是连续3次连续DrivingCycle中发生时MILOff可-最少40发动机Warm-UpCycles中同样故障没有发生时DTC可消除OBD主要法规内容2.催化Monitoring催化FRONTO2SENSORUPSTREAMO2SENSORREARO2SENSORDOWNSTREAMO2SENSOR驾驶条件催化FAILE/M增加热化OBD主要法规内容–继续2.催化Monitoring催化的性能Monitoring(Diesel除外)-油耗少的车辆可信赖的Monitoring技术不必要时可以免除Threshold是FTPHC基准1.75×FTPSTDThreshold适用NOxMonitoring是当地Phase-In中-'05MY(30%),06MY(60%),07MY(100%)-‘05~’06MY:3.5×FTPSTDThreshold适用-‘07MY~’:1.75×FTPSTDThreshold适用OBD主要法规内容-继续3.MisfireMonitoringTDCMisfireCrankshaftAngularSpeedn-2n-1nn+1发动机燃烧室压力发动机失火发动机不协调废气温度上升E/M增加燃油排放催化溶化OBD主要法规内容-继续3.MisfireMonitoring发动机不点火Monitor,Cylinder区分.多个Cylinder中发生不点火问题时，需要制定另外的代码-催化DamagingMisfire(MIL점멸):各发动机rpm/负荷条件下决定%Misfire,%Misfire和催化温度Data提出-Emission超过Misfire(MILOn):FTP规定值1.5倍所有PositiveTorque领域下Monitor实施RoughRoad,急加减速时MonitoringDisable可OBD主要法规内容-继续4.Evap.SystemMonitoringCANISTER,,CLOSEVALVE及滤清器燃油箱输入传感器燃油凸轮构造,READERWIR’GCANISTERPURGEVALVEHC大气排放增发废气系统LEAKAGEOBD主要法规内容-继续4.Evap.SystemMonitoringCompleteEvap.System中Airflow需确认.Evap.System的HCVapor的排放Monitor.燃油Tank容量的85%以上状态下MonitoringAbort可.SystemAirflow无法Check或者Φ0.5mm,1mmOrifice以上Leak感应时MIL灯亮.OBD主要法规内容-继续5.FuelSystemMonitoringFuelDeliverySystem符合规定能力MonitorFTP规定值1.5倍超过热化時MIL灯亮6.O2SensorMonitoringPrimary&SecondaryO2Sensor出力,ResponseRate等Monitor.Lean→Rich,Rich→LeanResponseRateCheckHeatedO2Sensor的Heater回路Monitor.FTP规定值1.5倍超过热化時MIL灯亮OBD主要法规内容-继续7.SecondaryAirSystemMonitoring8.EGRSystemMonitoringSystem和AirSwitchingValve的适当工作MonitorFTP规定值1.5倍超过热化時MIL灯亮EGRSystem的High/LowFlowMalfunctionsMonitor1)System的Any部品超过MakerSpec.时2)EGRFlowRate超出Spec.FTP规定值1.5倍超过時MIL灯亮OBD主要法规内容-继续9.A/CSystemRefrigerantMonitoringA/COn相关Off-IdleFuel,Spark等使其变更的Strategy适用车辆,-A/COn或者Control不工作时:SC-03规定值为准MIL灯亮-A/COff或者,Control工作时超出FTP规定值1.5倍或者他MonitoredSystem/ComponentDisable所引发的所有ElectronicA/CSystemComponents의MalfunctionsMonitoring-Phase-In:’06MY30%/’07MY60%/’08MY100%某一部品的Failure/热化也没有超出规定值的1.5倍,他MonitoredSystem/ComponentDisable没有引发时，不需要MonitoringOBD主要法规内容-继续10.PCVSystemMonitoring’02MY开始Phase-In-’02MY30%,’03MY60%,’04MY100%Crankcase和PCVValve之间,或者PCVValve와In.Mani.之间的Disconnection感应PCVValveCrankcase上直接固定的Type(Ex.ScrewType)Monitoring不必要OBD主要法规内容-继续11.EngineCoolingSystemMonitoringThermostat-MIL基准温度未达到的车辆启动時，可以以温度的函数来设定MIL基准/温度(50℉以下启动時Only)冷却水温S