（可编）故障闪码读取方法.docx

如有帮助，欢迎下载10（ 1 ）故障灯状态说明 ：发动机的故障闪码读取方法及故障代码本电控系统的故障灯一般位于仪表盘显示屏上（如下图所示） ，个别整车厂也可能把故障灯布置于仪表盘的按键位置正常来说，电控系统上电后，未起动发动机时故障灯是常亮的，发动机起动后故障灯熄灭，如果出现电控系统上电后故障灯不亮，此时可能是故障灯或其驱动线束有问题；如果电控系统上电后故障灯闪烁，此时可能发动机存在电控系统相关故障（可能为当前故障或历史故障） ，若其故障为历史故障则发动机起动后故障灯会熄灭，历史故障码一般可以通过关钥匙后断开发动机供电总闸片刻（ 20 秒以上）来清除；如果电控系统上电后，故障灯常亮或闪烁，发动机起动后故障灯仍然常亮或闪烁，则发动机可能存在电控系统相关故障，此时可以通过读取故障闪码来判断是什么故障以针对性检查排除故障故障灯（ 2 ）故障闪码的读取方法和输出原理：在电控系统上电后，当 ECM 的56# 针脚接收到接地信号后，故障闪码功能将被激活并通过故障指示灯闪烁输出当ECM 监测到用户请求故障闪码输出时， ECM 将通过闪码按照顺序以一个标准次数输出一个标准代码该标准代码设置为 123 ，故障代码闪码输出标准次数设置为 3 次。

标准代码以标定的次数输出后，第一个储存在 ECM 中的历史故障码将以同样的速度和次数输出，然后根据储存在 ECM 中的故障脉谱依次输出故障码， ECM 不会根据故障码激活的先后顺序输出故障码如果没有历史故障码了，那么将一直重复输出标准故障码图一为一个通过故障灯闪码进行故障输出的一个例子：16.00B CA D E F1 st Previously Active DTC G (DTC 221)14.0012.00)VC D( LI Msor c AlaitnetoPleg ato V10.008.006.004.002.000.00Default 1 st Code- 123Number of times to repeat a code0.000 5.000 10.000 15.000 20.000 25.000 30.000 35.000 40.000 45.000 50.000Time (sec)说明： 该例子中闪码输出次序是先输出标准码 123 ，然后逐一输故障码， 标准码和故障码输出时均连续闪 2 遍， 上述读取的故障码为 221 ，可对应诊断手册查找故障码 DTC221 查找相关故障解析。

玉柴故障闪码输出相关参数设置如下表：MIL Blink Code TimingsDelay before start of code blinking启动闪码功能之前的延时时间200MsBlink on-time闪亮时间400MsBlink off-time闪灭时间Time between digits in a code400Ms一个故障码中的数字之间的间隔时间1200MsExtra time between code repeats一个故障码的重复周期2000MsExtra time between codes故障码之间的时间周期3000MsExtra time before starting codes over启动一个更新的故障码的时间周期2000MsNumber of times to repeat a code故障码重复次数Default first code (always output)3缺省的第一个故障码（一直输出）123Key-on engine-off stored fault MIL on-time钥匙开关打开、发动机不启动，但有历史故障码时故障灯亮着的时间4500MsKey-on engine-off stored fault MIL off-time钥匙开关打开、发动机不启动，但有历史故障码时故障灯灭的时间500MsPower derate mode MIL fast-blink on-time降功率保护时 MIL 快闪亮时间250MsPower derate mode MIL fast-blink off-time降功率保护时 MIL 快闪灭时间 250 Ms（ 3 ）故障代码及故障解释列表故障码 / 闪码故障描述rank and/or cam could not synchronizeduring start-- 曲轴信号或凸轮轴信号启动时不能同步 16FP low voltage 91FP high voltage 92MAP voltage low-- 进气岐管空气压力 (MAP)电压低 107MAP pressure high-- 进气歧管压力高 108IAT higher than expected stage 1--IAT 高于 1 级 限值 111IAT voltage low--IAT 电压低 112IAT voltage high--IAT 电压高 113ECT higher than expected stage 1--ECT高 于 1 级 限值 116ECT voltage low － ECT/CHT 电压低 117ECT voltage high － ECT/CHT 电压高 118TPS1-2 lower than expected － TPS1 比TPS2 低 121TPS1 voltage low － TPS1 信号电压低 122TPS1 voltage high － TPS1 信号电压高 123IAT higher than expected stage 2 － IAT 高于 2 级 限值 127BP pressure low －大气环境压力低 129EGO1 open / lazy －氧传感器开路 / 罢工 134EGO3 open / lazy 140EGO2 open / lazy 154EGO4 open / lazy 160Adaptive-learn gasoline bank1 high 171Adaptive-learn gasoline bank1 low 172Adaptive-learn gasoline bank2 high 174Adaptive-learn gasoline bank2 low 175FT low voltage 182FT high voltage 183Gaseous fuel temperature sender lowvoltage 187Gaseous fuel temperature sender highvoltage 188ECT higher than expected stage 2 －发动机冷却液温度高于 2 级 限值 217RPM higher than max allowed governspeed －发动机转速比最大允许调速转速高 219TPS1-2 higher than expected － TPS1 比TPS2 开 度高 221TPS2 voltage low- TPS2 信号电压低 222TPS2 voltage high- TPS2 信号电压高 223Boost control overboost failure 234TIP active- TIP 传感器报错 236TIP low voltage- TIP 电压低 237TIP high voltage-TIP 传感器电压高 238Injector 1 open or short to ground 261Injector 1 coil shorted 262Injector 2 open or short to ground 264Injector 2 coil shorted 265Injector 3 open or short to ground 267Injector 3 coil shorted 268Injector 4 open or short to ground 270Injector 4 coil shorted 271Injector 5 open or short to ground 273Injector 5 coil shorted 274Injector 6 open or short to ground 276Injector 6 coil shorted 277Injector 7 open or short to ground 279Injector 7 coil shorted 280Injector 8 open or short to ground 282Injector 8 coil shorted 283Injector 9 open or short to ground 285Injector 9 coil shorted 286Injector 10 open or short to ground 288Injector 10 coil shorted 289Boost control underboost failure 299Knock1 excessive or erratic signal 326Knock1 sensor open or not present 327Knock2 excessive or erratic signal 331Knock2 sensor open or not present 332CRANK input signal noise －曲轴输入信号有干扰 336Crank signal loss 曲轴输入信号丢失 337CAM input signal noise 凸轮轴输入信号干扰 341Loss of CAM input signal 凸轮轴输入信号丢失 342Catalyst inactive on gasoline (Bank 1) 420Catalyst inactive on gasoline (Bank 2) 430Roadspeed input loss of signal 502IAC ground short 508IAC coil open/short 509Oil pressure sender high pressure 521Oil pressure sender low voltage 522Oil pressure sender high voltage 523Oil pressure low 524Oil pressure sender low pressure 524Vbat voltage low 电源电压低 562Vbat voltage high 电池电压高 563Microp。