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故障现象:一辆生产于2012年的丰田雅力士轿车,车辆型号为ZSP91L-AHPHKC,发动机型号为1ZR,行驶里程3 000km。车主反映该车上次维修后在低速约20~50km/h左右制动时车身前部有“咔咔”异响声。故障的诊断与排除:接车后验证故障现象,正如车主所述,但是车辆故障灯没有点亮。经多次试车,发现此响声与ABS泵工作响声很相似,但此时的车速较低,路面又是干燥的水泥路,制动力比较小,ABS不应该起作用。根
Symptom: a production in 2012 Toyota Yaris sedan, vehicle model ZSP91L-AHPHKC, the engine model 1ZR, mileage of 3000km. Car owners reflect the car after the last maintenance at a low speed of about 20 ~ 50km / h or so brake when the front of the body “Kaka ” abnormal sound. Fault diagnosis and troubleshooting: After the car to verify the fault phenomenon, as described by the owner, but the vehicle fault light is not lit. After several tests, found that the noise and ABS pump work sound is very similar, but this time the speed is low, the road is dry cement road, braking force is relatively small, ABS should not work. root