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空调压缩机不工作故障现象一辆帕萨特领驭1.8T轿车,累计行驶了约10万km,开空调时2个电子风扇能正常运转,但空调压缩机不工作。检查分析接到该车后首先验证故障现象。起动发动机后,接通空调(A/C)开关和鼓风机开关,空调开关上的指示灯点亮,鼓风机运转,出风口有风吹出,左、右两侧的电子风扇也运转,但用手触摸空调高压管的节流阀处,不凉,检查空调压缩机电磁离合器,未吸合,说明空调压缩机未工作。接着使用万用表测量空调压缩机电磁离合器的供电情况,正常。连接空调歧管压力表组,观察空调高低压系统内的压力,通过测量得知空调系统内的制冷剂量正常,检查至此,说明故障出在空调控制线路上。连接VAS5051进入01-08-050,该组数据的第3区是空调A/C开关信号,
Air conditioning compressor does not work Fault phenomenon A Passat Ling Yu 1.8T sedan, a total of about 100,000 km, air conditioning when two electronic fans can operate normally, but the air conditioner compressor does not work. Inspection and Analysis After receiving the car to verify the fault phenomenon. After starting the engine, turn on the air conditioning (A / C) switch and the blower switch, the light on the air conditioning switch is lit, the blower is running, the air outlet of the fan blows out, the left and right electronic fans also operate, Air conditioning high-pressure pipe throttle, not cool, check the air conditioner compressor electromagnetic clutch, did not pull, indicating air conditioner compressor is not working. Then use the multimeter to measure the air conditioner compressor electromagnetic clutch power supply, normal. Connected to the manifold manifold pressure gauge group to observe the pressure inside the system of high and low pressure air conditioning, air conditioning through the measurement system that the normal amount of refrigerant, check to this, indicating that the fault on the air-conditioning control circuit. Connect VAS5051 into 01-08-050, the data in the third area is the air conditioning A / C switch signal,