故障现象一辆雪佛兰子弹头旅行乘用车仪表板上的ABS故障指示灯常亮,ABS不工作。故障诊断排除用故障检测仪TECH-1进入ABS读取故障内容,发现左前轮速度变化过大。在行驶过程中进入数据清单,对4个车轮的轮速进行对比,发现4个车轮均有轮速显示,但左前轮的速度不稳定,其他3个车轮的轮速却非常稳定。断开左前轮轮速传感器,用万用表电阻档测量轮速传感器两端子之间的电阻,为988～1208Ω Symptoms A Chevrolet bullet travel passenger car dashboard ABS fault indicator light, ABS does not work. Troubleshooting Troubleshooting TECH-1 fault detector into the ABS to read the contents of the fault and found that the left front wheel speed change is too large. In the process of driving into the data list, compared the wheel speed of the four wheels and found that four wheel speed display, but the left front wheel speed is not stable, the other three wheel speed is very stable. Disconnect the left front wheel speed sensor and measure the resistance between the two terminals of the wheel speed sensor with a multimeter resistance range of 988 ~ 1208Ω