How to troubleshoot the electronic control system of body stability

The function of throttle fault EFI idle speed adjustment is to realize the rapid warm-up process after the engine is started; The second is to automatically keep the engine idle and rotate stably at various target speeds. General idle speed adjustment is mainly to adjust the throttle opening. If there is too much carbon deposit in the throttle, the air intake of the idle speed regulating valve will decrease at the same opening, resulting in unstable idle speed. Fuel system failure The fuel system is one of the most important systems in the electronic control system, and its key function is to provide enough fuel for the engine. Fuel from an automobile fuel tank is pressurized by an oil pump, filtered by a fuel filter and supplied to an injector. EUC adjusts the start and start of the fuel injector according to the input signals of various system sensors, and injects fuel into the cylinder for combustion at a certain amount and pressure. If the fuel injector fails and the fuel pressure is too low or too high, it will basically affect the whole electronic control system, thus affecting the phenomenon of poor acceleration and unstable idle speed. Troubleshooting method of electronic control system for body stability: 1. The body electronic control system is stable, dynamic and has short acceleration time. If the acceleration reflects hysteresis, poor acceleration, unstable engine idle speed, etc. It shows that there is something wrong with the electronic control system and it should be repaired immediately. Analyze and diagnose the problems often encountered in air intake, ignition and fuel system; 2. One of the most important features of the electronic control system for car body stability is good dynamic performance and short acceleration time. If there are problems such as slow acceleration, poor acceleration and unstable idle speed of the engine, it means that there is something wrong with the electronic control system and it should be repaired immediately. The intake system, ignition system, fuel system and some common problems are analyzed and diagnosed. 3. Air intake system failure. The air intake system consists of air filter, air intake branch pipe, sensor, idle device, booster regulator, etc. Its sensors include: air flow sensor, air pressure sensor, throttle position sensor, air temperature sensor, cooling temperature sensor, etc. Any failure of these related components will affect the normal operation of the engine.