描述
检测汽车是否漏电的方法有两种：一种是电流检测法;一种是经验检测法。
电流检测法：检测步骤断开点火开关，拆下蓄电池负极接线，把数字万用表调到电流表(1A档)，再取用两根导线，将两导线一端分别接万用表正、负表笔，另一端分别接负极接线柱和负极接线，观察电流表数值。将测得的电流值与维修资料对照是否在正常范围内。若测得的电流值过大，则说明车辆有漏电故障。故障排除方法将熔断丝逐个拔下，观察指针变化。当拔下某个熔断丝时指针不再转动，则故障点是通过此熔断丝的电路或用电器。同电流检测法一样，通过查阅电路图或查看线路走向，顺线路查找出损坏部位进行修理。
经验检测法：检测步骤断开点火开关，拆下蓄电池负极接线，然后将接线与蓄电池负极柱碰触，观察火花强度。火花越强，漏电现象越严重。故障排除方法若火花较弱，则说明有小电流存在，应重点检查室内小灯、行李厢灯等是否存在虚接常亮现象;若火花较强，则说明有大电流存在，应着重查看是否有用电器在一直工作或线路是否有破损搭铁现象。
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