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发动机故障等的工作原理?
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发动机故障等的工作原理?

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晚报路

 
 
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2009-12-09
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ECU内设定有几组固定的数字组成故障码,用来指示具体的故障原因和位置。这就是我们在修车时经常看见修车师傅用诊断仪检查出来的故障码,每个故障码对应的问题不一样,以便于更好的找到并解决故障。故障码分为永久性故障码(只有检修后才能消除)和瞬时性故障码两种(时有时无故障)。出现永久性故障码时黄色的故障灯常亮、出现瞬时性故障码时黄色的故障灯不常亮,但会存储。ECU最多可以存储十五个故障码。有些车主在开车时会发现黄色的故障灯亮过,后来不亮了,那就是瞬时性故障码。比如说传感器的接触不好,并不是传感器坏了。但瞬时性故障码还是会留下。如果是之后接触一直正常的话,那也要等启动五十次后没问题故障码才会自动消除。
 
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