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ao di a8 leng che shi shuang yin la ba bu xiang
Author(s): 
Pages: 98
Year: Issue:  9
Journal: Auto Maintenance

Keyword:  喇叭电子控制单元故障现象故障诊断双音转向柱行驶里程继电器故障点车辆停放;
Abstract: <正>车型:4E80WH。VIN:WAUSHB4EXAN××××××。行驶里程:43666km。故障现象:冷车时双音喇叭不响。故障诊断:客户抱怨冷车时双音喇叭不响。来店检查时故障现象无法重现。用VAS505X检测无故障,检查各部线路正常,执行TPI"2024392-1双音喇叭维修更换指导说明",双音喇叭可以正常工作。劝说客户将故障车辆留厂观察,将车辆停放在寒冷的室外,次日早晨上车观察,发现喇叭不响,也没有喇叭继电器工作的声音。连接诊断仪执行喇叭元件诊断,喇叭可以正常发声。从转向柱电子控制单元J527中读取数据块,当按下喇叭按钮时测量值没有发生变化,这就证明故障点在转向柱电子控制单元J527和转向盘喇叭按钮之间。
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