题目：2019款雪佛兰科沃兹雨刮器不工作诊断维修方案目录1.问诊试车..........................................................................................................................11.1车辆信息................................................................................................................11.2故障现象................................................................................................................11.3故障现象确认........................................................................................................12.工作原理及故障原因分析..............................................................................................22.1汽车雨刮器工作原理............................................................................................22.2雨刮器电气原理示意图........................................................................................22.3雨刮器不工作故障原因分析................................................................................33.诊断流程方案设计及实施................................................................................................43.1雪佛兰科沃兹雨刮器不工作诊断流程方案........................................................43.2维修方案实施.........................................................................................................43.3检查雨刮保险IF27...............................................................................................43.3检查雨刮电机内阻................................................................................................53.3检查雨刮电机开关................................................................................................54.修复验证............................................................................................................................64.1更换雨刮开关........................................................................................................64.2安装雨刮开关........................................................................................................74.3修复后验证.........................................................