【摘要】 介绍了皇冠3．0轿车装用的2JZ－GE型发动机的电子燃油喷射系统的组成与工作原理，以及该系统的电路图。利用该系统的诊断接口可进行自我故障诊断，根据灯光闪烁次数所表示的故障代码确定故障部位。还介绍了利用万用表对电子控制单元及其外围元件进行故障诊断的方法。更多还原

【Abstract】 Composition,working principle and electrical circuit diagram of electronic fuel in jection system of the model 2JZ-GE engine of the Crown 3.0 car is presented. Self trouble diagno sis may be carried out by means of diagnosing inter face of the system,and location of trouble can be determined from number of light sparkling which represents the trouble code. Method of trou ble diagnosis of electronic controlled unit and its outskirt element by means of universal electrical measuring meter is also presented by the article.更多还原