故障现象一辆2010款别克君越车,搭载LE5发动机,未配备智能钥匙进入系统,行驶里程约为9万km。车主反映,车辆行驶过程中,中控门锁出现异常作动(锁止和解锁来回切换)的故障现象。故障诊断接车后首先试车验证故障现象,接通点火开关,起动发动机,发动机顺利起动。连接故障检测仪(GDS)调取故障代码,无相关故障代码存储。查看该车的维修履历,之前未做过任何事故维修。进行路试,行驶约30 km,中控门锁出现了2次异常作动,故障出现时间 Failure phenomenon A 2010 Buick LaCrosse car, equipped with LE5 engine, is not equipped with a smart key into the system, driving mileage of about 90,000 km. Owners reflect the vehicle driving process, the central locking abnormal movements (lock and unlock back and forth switch) of the fault phenomenon. Fault diagnosis After the first test car to verify the fault phenomenon, turn on the ignition switch, start the engine, the engine started smoothly. Connect the fault detector (GDS) to retrieve the fault code, no relevant fault code storage. Check the car’s service history, have not done any accident before the repair. Road test, driving about 30 km, the central locking appeared two abnormal movements, fault occurred time