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故障现象一辆2007款福特福克斯1.8 L自动挡轿车,累计行驶里程为2.3万km,在行驶中自动变速器升降挡时均有冲击的现象。故障诊断维修人员首先进行路试,发现当车速达25 km/h～30 km/h时自动变速器1挡升2挡,此时自动变速器有冲击,车辆有抖动的现象;当车速下降到30 km/h时,车辆再次出现抖动的现象;仪表盘上的黄色故障灯点亮,指示自动变速器进入保护模式,自动变速器挡位锁在3挡,发动机转速为3 500 r/min时车速只能达到100 km/h左右。用
Symptoms A 2007 Ford Focus 1.8 L automatic sedan, with a total mileage of 23,000 km, the automatic transmission in the driving gear when the impact of the phenomenon. Fault diagnosis and maintenance personnel first road test and found that when the speed of 25 km / h ~ 30 km / h automatic transmission 1 block up 2 block, then the automatic transmission has an impact, the vehicle jitter phenomenon; when the speed dropped to 30 km / h, the vehicle is shaking again; a yellow fault light on the dashboard illuminates, indicating that the automatic transmission is in protective mode, the automatic gearbox is locked in 3rd gear and the vehicle speed is only reached at 3 500 r / min About 100 km / h. use