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| + | 用SNAP—ONMT2500诊断仪读取发动机电控系统故障码，故障码为P0100——空气流量计信号不良 | ||
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| + | 。经过检查和测量，发现该车的空气流量计被人解体过，同时进气温度信号电压偏高，进气温度引脚 | ||
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| + | (THA)与参考电压引脚(Vc)间的电阻值偏大。重新更换一个新的空气流量计后故障排除。 | ||
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| + | 空气流量计是电控发动机的一个重要部件，它一旦损坏，机器将产生一系列故障，如油耗增加、 | ||
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| + | 起动困难等。但如何判定空气流量计本身是否损坏并不是一件容易的事，由于很多车辆的车载诊断系统程 | ||
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| + | 序设计不完善，有时故障代码显示空气流量计损坏，而实际上故障出在其它地方。使用吹风机和万用表可 | ||
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| + | 以迅速检查出空气流量计是否损坏。具体做法是：拆掉空气流量计前面的进气胶管，打开点火开关，再用 | ||
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| + | 吹风机的冷风档对准流量计的热丝或热膜猛吹，同时用万用表测量空气流量计输出的电压和电流，如果输 | ||
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| + | 出信号较大并且在不断变化，就说明空气流量计是好的，如果没有输出信号或信号较弱，就表明空气流量 | ||
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| + | 计已经损坏。用这种方法检查空气流量计，不仅方便快捷，而且准确率极高。 | ||
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| + | [http://www.zbllj.com 流量计] | ||
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| + | ---- | ||
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