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故障现象一辆行驶里程约为25万km的2008款别克陆尊商务车,打开空调制冷,冷却风扇立刻运转且运转时间很长,空调制冷效果差。故障诊断接车后试车验证故障现象,在开启和关闭空调制冷系统时,空调压缩机电磁离合器吸合、断开正常,在着车运行空调制冷系统后冷却风扇转动不停,空调制冷效果差,故障症状确如车主描述。用故障检测仪读取故障代码,未发现故障代码。将空调压力表连接至空调
Trouble phenomenon A mileage of about 250,000 km 2008 Buick Truman business car, turn on air conditioning and cooling, cooling fan immediately running and a long time, poor air conditioning and cooling. Fault diagnosis After the test car to verify the fault phenomenon, the air conditioning and refrigeration system is turned on and off, the air conditioner compressor electromagnetic clutch pull, disconnect the normal operation in the car air conditioning and cooling system cooling fan rotation non-stop, poor air conditioning and cooling, Fault symptoms as described by the owner. Read the fault code with the fault detector, did not find the fault code. Connect the air conditioner pressure gauge to the air conditioner