故障现象一辆福特C346(新福克斯)车,装备2.0 L缸内直喷汽油发动机,累计行驶里程约为1.5万km,车主反映该车辆右前车窗玻璃无法一次性关闭和打开。故障诊断接车后,首先验证故障现象,使用驾驶人侧车窗玻璃升降主开关或前乘员侧车窗玻璃升降开关,升降右前车窗玻璃时,右前车窗玻璃不能一次性关闭或者打开,即 Symptoms A Ford C346 (New Focus) car equipped with a 2.0 L direct injection gasoline engine has a cumulative mileage of about 15,000 km. The owner reported that the right front window glass of the vehicle could not be turned off and on at once. Fault diagnosis After the car, the first verification of the phenomenon of failure, the use of the driver’s side window glass lift main switch or front passenger side window lift switch, lift the right front window glass, the right front window glass can not be closed or opened at once,