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一辆捷达王轿车,在发生交通事故后,就出现了冷却液温度偏高,冷气不凉,冷机时发动机加速困难的现象。检查分析用解码器读取故障代码,无故障代码。根据对该类车的维修经验,冷却液温度偏高,一般是冷却风扇无高速档而造成的,检查热敏开关,正常。检查冷却风扇至热敏开关间的电路时,发现冷却风扇控制继电器烧损。因冷机时发动机加速困难,就对冷却系统进行了检查,发现没有安装节温器。接着检查冷气不凉的故障,更换了空调膨胀阀,空调制冷效果没有
A Jetta sedan, in the event of a traffic accident, there was a high coolant temperature, air conditioning is not cool, cold engine acceleration difficult phenomenon. Check the analysis with the decoder to read the fault code, no fault code. According to the maintenance experience of such vehicles, the coolant temperature is high, the cooling fan is generally caused by no high gear, check the thermal switch, normal. Check the cooling fan to the circuit between the thermal switch and found the cooling fan control relay burnout. Due to the cold engine acceleration difficulties, the cooling system was inspected and found no thermostat installed. Then check the air-conditioning does not cool the fault, replaced the air-conditioning expansion valve, air-conditioning cooling effect is not