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故障现象一辆行驶里程为4.5万km迈腾轿车,停放7天后出现发动机不能起动的故障。故障诊断对该车进行检查后发现,蓄电池电压不足,有漏电现象,从而导致发动机不能起动。用VAS 5202A检测,没有故障代码存储。由于没有示波器,只能用万用表对其漏电情况进行检查。首先关闭所有用电设备和点火开关,拆下蓄电池负极接线柱,将万用表调到电流挡,红表笔接到负极接线柱上,将黑表笔连接固定在蓄电池负极柱上,然后关闭所有车门,用遥控器闭锁车门。35s后发现万用表上的指示电流不再继续下降,并保持在60mA～70mA,说明该车不能进入睡眠模式。
Fault phenomenon A mileage of 45,000 km Magotan sedan, parked 7 days after the engine can not start the fault. Troubleshooting The car was checked and found that the battery voltage is insufficient, a leakage phenomenon, resulting in the engine can not start. VAS 5202A test, no fault code storage. Because there is no oscilloscope, can only use the multimeter to check the leakage situation. First, turn off all electrical equipment and ignition switch, remove the battery negative terminal, the multimeter transferred to the current block, the red test leads to the negative terminal, the black test leads connected to the negative pole in the battery, and then close all doors, with Remote control locks the door. After 35s, the indication current on the multimeter stopped falling and remained at 60mA ~ 70mA, indicating that the car can not enter the sleep mode.