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故障现象一辆宝马320车(底盘代号为E90),搭载N46发动机,累计行驶里程约为10.2万km。车主反应,该车发动机无法起动。故障诊断接车后试车,遥控解锁及闭锁功能正常;将车钥匙插入卡槽,车钥匙无法锁止,组合仪表不点亮;按下起动开关,没有反应。正常情况下,将车钥匙插入卡槽,卡槽读取车钥匙信息,车钥匙通过便捷进入及起动系统(CAS)控制单元认证后被锁止,同时CAS控制单元接通ACC电源,组
Trouble A BMW 320 car (chassis codenamed E90), equipped with N46 engine, the cumulative mileage of about 102000 km. Owner response, the car engine can not start. Fault diagnosis After the car to take the test, remote unlock and lock function is normal; the car key into the slot, the car keys can not be locked, the instrument does not light; press the start switch, no response. Normally, the car key is inserted into the slot, the slot reads the car key information, the car key is locked by the CAS control unit, and the CAS control unit turns on the ACC power supply. The group