故障现象一辆2008年产丰田雅力士(YARIS)轿车,在一次小的碰撞修复后,仪表盘上的ABS故障指示灯点亮。之后该车曾在多家修理厂维修过,并更换过ABS控制单元及轮速传感器,但故障依旧。故障诊断用X431进入ABS控制单元读取故障代码,读得的故障代码含义是“右前ABS轮速传感器断路或短路”。进一步读取数据流发现,当车辆行走时,右前ABS轮速传感器 Symptom A Yaris sedan made in 2008 turned on the ABS fault indicator on the dashboard after a small collision repair. After the car has been repaired in a number of repair shop, and replaced the ABS control unit and wheel speed sensor, but the fault still. Fault diagnosis X431 into the ABS control unit to read the fault code, read the meaning of the fault code is “front ABS wheel speed sensor open circuit or short circuit ”. Further reading of the data stream reveals that when the vehicle is traveling, the right front ABS wheel speed sensor