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故障现象一辆2016年产厦门金龙XMQ6111AGBEVL1纯电动公交客车,累计行驶里程为5 762 km,因车辆无法行驶而进厂维修。据驾驶人反映,该车是在正常行驶中突然断电,导致车辆无法行驶的。故障诊断接车后,接通点火开关,关闭前、后乘客侧车门,仪表显示系统三级故障,且蜂鸣器不停报警,仪表上一直显示“上电过程”。正常情况下,接通点火开关后,车辆会有15 s的自检,当所有系统正常时,仪表会显示“Go驱动模式”。针对故障现象,本着由简入繁的维修原则,首先连接金
Symptom A 2016 Xiamen Golden Dragon XMQ6111AGBEVL1 pure electric bus with a total mileage of 5 762 km, because the vehicle can not drive into the plant maintenance. According to the driver reflected that the car is suddenly off in normal driving, leading to the vehicle can not drive. Troubleshooting After the car is turned on, turn on the ignition switch, close the front and rear passenger doors, instrument display system level three fault, and buzzer alarm, the instrument has been displayed “power-on process ”. Under normal circumstances, the car will have a 15 s self-test when the ignition is switched on. When all systems are OK, the meter will display “Go Drive Mode”. For the phenomenon of failure, in line with the principle of maintenance from simple to complex, the first connection of gold