故障现象一辆2005款重庆红岩牵引车,型号为CQ4243TVC294,累计行驶了25万km。该车是刚购买的二手车,由于在制动过程中没有ABS效果,驾驶人疑惑该车是没有配置ABS或ABS不工作。故障诊断接车后,首先进行初步检查,明确该车是否配置ABS。接通点火开关,在仪表盘上没有发现ABS故障指示灯,也没有听到ABS电磁阀自检的声音,似乎没有配置ABS。经进一步检查,发现4个车轮上均装有轮速传感器,并 Fault phenomenon A 2005 Chongqing Hongyan tractor, model CQ4243TVC294, accumulated a total of 250,000 km. The car is a newly purchased used car, because there is no ABS effect in the braking process, the driver doubts the car is not equipped with ABS or ABS does not work. Troubleshooting After receiving the car, the first preliminary examination to determine whether the car is equipped with ABS. Turn on the ignition switch, ABS fault indicator is not found on the dashboard, did not hear the sound of ABS solenoid valve self-test, it seems that there is no configuration ABS. Upon further examination, it was found that all four wheels were equipped with wheel speed sensors