车型:一辆雷克萨斯LX570越野车,搭载1UR-FE 8缸发动机。行驶里程:40000km。故障现象:客户反映冷车启动后,发动机出现抖动的现象,同时发动机故障灯和侧滑灯异常点亮,如图1所示。故障诊断:使用诊断仪进入发动机系统,查看相关故障码如图2所示。基本可以判断故障灯点亮的原因是由于失火导致的发动机工作不正常。故障原因有:(1)发动机线束断路或者短路;(2)进气系统;(3)真空软管 Model: A Lexus LX570 SUV, equipped with a 1UR-FE 8-cylinder engine. Mileage: 40000km. Fault phenomenon: The customer reflects the cold car starts, the engine jitter phenomenon, while the engine fault light and side light abnormal light, as shown in Figure 1. Troubleshooting: Use the diagnostic instrument into the engine system, see the relevant fault code shown in Figure 2. Basically, the reason why the fault light is on is that the engine does not work properly due to a misfire. Fault causes are: (1) engine harness open circuit or short circuit; (2) intake system; (3) vacuum hose