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故障现象一辆上海通用别克君威轿车,累计行驶5600km,出现该车原车所配的2只遥控发射器功能均失效的现象。故障诊断首先验证故障现象,故障确如用户所述。查阅该车的维修手册可知,该款轿车遥控门锁系统由遥控发射器、遥控接收器、车身控制模块(BCM)、4只门锁电动机、驾驶人侧车门锁开锁继电器、行李箱盖释放继电器、左前门锁开关及右前门锁开关等元件组成。当按下遥控发射器上的“UNLOCK”(开锁)按钮,遥控发射器发送开锁信号,此信
Symptom A Shanghai GM Buick Regal sedan, total travel 5600km, appeared in the original car equipped with two remote control launcher functions are invalid phenomenon. Fault diagnosis First verify the fault phenomenon, the fault as described by the user. Check the car’s maintenance manual shows that the car remote control door lock system consists of remote control transmitter, remote control receiver, body control module (BCM), 4 door lock motor, driver’s door lock release relay, trunk lid release relay , Left front door lock switch and right front door lock switch and other components. When the “UNLOCK” button on the remote transmitter is pressed, the remote transmitter sends an unlock signal