近年来,电控发动机在国内外乘用车上被大量采用,但是,对其电控系统的故障诊断与维修,大部分驾驶员和部分汽车修理工还不大熟悉,即便是对简单的故障也不知如何下手。他们认为,对于电控系统的故障诊断,必须采用专用的故障诊断仪器。事实上,汽车制造厂为了方便电控系统的维修,都设置了电控系统的故障自诊断系 In recent years, electronically controlled engines are widely used in passenger cars both at home and abroad, however, most of the drivers and some auto mechanics are not familiar with the fault diagnosis and maintenance of their electronic control systems. Even for simple faults I do not know how to start. They think, for the fault diagnosis of electronic control system, you must use a dedicated fault diagnosis equipment. In fact, the car manufacturer in order to facilitate the maintenance of electronic control systems, have set up the electronic control system fault diagnosis system