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奥迪100形轿车里程表故障

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Post time 2016-5-6 09:24:24 | Show the author posts only Reply Awards |Descending |Read mode
一辆奥迪100型轿车来我厂维修,司机反映该车正常行驶时里程表上下跳动且时有时无。

    接到车的第一感觉认为可能是传感器有故障,更换了一个新的传感器,进行路试,故障依旧。拔下传感器插接器,用万用表测量传感器线路信号,一切正常。更换了一块里程表,故障消失了。可第二天该车又回来了,问题仍没有彻底解决。难道故障在仪表盘线路板上?

    拆下仪表盘,仔细查看仪表盘线路板,发现线路板和里程表相连处有一处焊点开焊了。把开焊处焊接好,组装好仪表盘。再次路试,一切正常,故障终于排除了。
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