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故障现象一辆宝马3系轿车,累计行驶里程约为1.5万km,客户反映事故维修后发动机冷却液温度高。故障诊断根据故障现象分析,该车前一天刚刚事故维修后提车,用故障检测仪检测,存储有电子冷却液泵通讯的故障,而后更换了冷却液泵并添加冷却液,用压力表加压测漏,无渗漏现象;外出试车,刚开始冷却液温度正常,行驶1h后,发现有漏冷却液的现象。将车拖回后重新添加冷却液检查泄漏情况,但却无法发现渗漏迹象。根据先前的渗漏
Fault phenomenon A BMW 3 Series sedan, the cumulative mileage of about 15,000 km, the customer reflects the accident engine repair coolant temperature is high. Fault diagnosis According to the analysis of the phenomenon of the phenomenon, the car just a day after the accident repair the car, with the fault detector testing, electronic coolant pump communication stored fault, and then replaced the coolant pump and add coolant, pressurized with a pressure gauge Leakage, no leakage; go out to test, the beginning of the coolant temperature is normal, 1h after driving, the phenomenon of leakage of coolant found. After towing the car, re-add the coolant to check for leaks, but no signs of leakage were found. Based on previous leaks