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一辆HFC6470A瑞风车,累计行程8.9万km,出现车速里程表不工作的故障。首先将该车用举升机升起,拔下车速传感器导线侧连接器,拆下车速传感器,起动发动机并挂入前进档,查看带动车速传感器转动的输出转子是否转动,结果发现输出转子转动正常。装复车速传感器,并插上导线侧连接器,再次起动发动机,挂入前进档,测量车速传感器的电源线和搭铁线,正常,两者之间的电压为12 V,同时用万用表的交流电压档检测车速传感器信号(P)线,有交流信
A HFC6470A Swiss windmills, a total of 89,000 km travel, speedometer does not work appears failure. First lift the car with the lift, unplug the vehicle speed sensor wire connector, remove the vehicle speed sensor, start the engine and linked into the forward file, see the output speed of the rotor speed sensor rotation, the output rotor turns normal . Install the vehicle speed sensor, and plug in the wire side connector, start the engine again, linked into the forward gear, the speed sensor measuring the power cord and ground wire, normal, the voltage between the two is 12 V, while using a multimeter AC Voltage file detection speed sensor signal (P) line, there is exchange of letters