一、电控发动机故障诊断的基本原则、方法和步骤 1.基本原则 电控发动机的电子控制系统是一个精密而又复杂的系统,其故障的诊断也较为困难。而造成电控发动机不工作或工作不正常的原因可能是电子控制系统,也有 First, the basic principles of electronic control engine fault diagnosis, methods and procedures 1. Basic principles Electronic control system of electronic control engine is a sophisticated and complex system, the fault diagnosis is more difficult. The reason that the electronically controlled engine does not work or does not work properly may be an electronic control system and also