首页 > 新闻资讯 > 雪佛兰景程2009款图片(【聚匠修车案例】2009年产景程1.8天气寒冷无法起动)
2026-03-06

雪佛兰景程2009款图片(【聚匠修车案例】2009年产景程1.8天气寒冷无法起动)

车辆信息


一辆2009年产景程1.8轿车,行驶里程9万km。




故障现象


用户反映该车由于天气寒冷无法起动。




故障原因


风挡清洗液冷冻导致不能起动。




故障诊断


1、维修人员试车,发现该车起动机运转,但发动机不能起动。与此同时还注意到仪表板上的防盗指示灯点亮(如下图所示),显然在这种情况下发动机是无法起动的;






△ 图防盗指示灯位置




2、检测防盗控制单元,发现故障诊断仪无法与其建立连接。该车的防盗控制单元集成在车身控制单元ISU中,检查ISU的电源熔丝(如下图所示),发现已经熔断。测量熔丝输出端与搭铁之间的电阻,阻值正常。这样,熔丝的熔断就存在着2种可能性,一是线路偶发短路,二是用电器过载。




△ 图车身控制单元熔丝的位置




3、为了确定导致熔丝熔断的原因,逐一检查车辆的所有用电器。结果发现风挡清洗液已完全冻结。如果驾驶员在行驶中开启过风挡清洗,清洗泵电机的转子无法转动,电枢电流就会急剧升高,熔丝熔断不可避免。与用户沟通得知,此前他的确使用过风挡清洗功能,但未见有清洗液喷出。这便证实了前面的推测。




故障排除


更换风挡清洗液及熔丝,故障排除。


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