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故障现象一辆2011年产保时捷卡宴车,搭载3.0T发动机和自动变速器,行驶里程约为8万km,因空调系统制冷效果差而进厂检修。故障诊断接车后试车验证故障,接通点火开关起动发动机,发动机顺利起动。接通空调开关,空调出风口有冷风吹出。经询问驾驶人得知,该车的空调系统并非完全不制冷,而是在运转约30 min后才会出现制冷效果变差的故障现象。于是持续对空调出风口温度进行监测,发现空调出风口逐渐吹出自然风。
Trouble phenomenon A 2011 Porsche Cayenne car, carrying a 3.0T engine and automatic transmission, mileage of about 80,000 km, due to poor air conditioning system cooling into the plant overhaul. Fault diagnosis After the test car to verify the fault, turn the ignition switch to start the engine, the engine started smoothly. Connected to air-conditioning switch, air-conditioning outlet with cold wind blowing. Upon inquiry, the driver learned that the car’s air-conditioning system is not completely not cooling, but after about 30 min of operation, the cooling effect will deteriorate. So continue to air-conditioning outlet temperature monitoring and found that the air-conditioning outlet gradually blowing the natural wind.