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故障现象一辆2005款长安福特蒙迪欧车,装载2.0 L直列4缸发动机和4速自动变速器,累计行驶里程约8.7万km。该车ABS在自检时正常,但在行驶过程中,轻踩几次制动踏板后,ABS指示灯就会点亮,尤其是在颠簸路面上踩制动踏板。另外,无论车速是多少,制动时制动踏板都会严重抖动且发出“嘎嘎”声,但在ABS指示灯点亮后,异响和抖动现象均消失。故障诊断接车后,接通点火开关,ABS指示灯不点亮。用IDS进行检测,读取故障代码C1175,故障信息为“左后轮轮速传感器输入电路失灵”。将车辆举升,用手转动左后轮,
Trouble A 2005 Changan Ford Mondeo car loaded 2.0 L inline 4-cylinder engine and 4-speed automatic transmission, a total mileage of about 87,000 km. The car ABS in the self-test normal, but in the process of driving, light step on the brake pedal several times, the ABS indicator will light, especially in the bumpy road tread brake pedal. In addition, regardless of speed, the brake pedal will be severely jitter and a “rattle” sound when braking, but the abnormal sound and jitter disappear when the ABS indicator is lit. Troubleshooting After the car is turned on, turn on the ignition switch, ABS indicator does not light. Detect with IDS, read fault code C1175, the fault information is “Left rear wheel speed sensor input circuit failure ”. Lift the vehicle, turn the left rear wheel by hand,