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车型:配备2 7 6缸内直喷发动机、7速722.9变速器。行驶里程:52428km。故障现象:车辆保养过后,发动机故障灯点亮,并且发动机抖动严重。故障诊断:接车后了解车辆情况,车辆按照正常的保养程序做完保养,准备总检时发现发动机故障灯点亮,发动机抖动严重,感觉要熄火的样子。连接诊断仪,对电控系统进行快速测试,发现发动机控制单元有当前故障码,如图1所示。
Model: equipped with 2 7 6-cylinder direct injection engine, 7-speed 722.9 transmission. Mileage: 52428km. Symptom: After the vehicle maintenance, the engine fault light is lit, and the engine jitter serious. Troubleshooting: After the car to understand the situation of the vehicle, the vehicle in accordance with the normal maintenance procedures done maintenance, the total inspection found that the engine fault lights lit, the engine jitter serious, feeling like to turn off. Connect the diagnostic instrument, the electronic control system for rapid testing and found that the engine control unit has the current fault code, as shown in Figure 1.