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故障现象一辆行驶里程为8 532 km的途观至尊型车(装备CEA发动机),客户反映仪表盘上的EPC灯和发动机故障灯点亮,且偶尔会起动困难,急加速有时耸车。故障诊断接车后,经试车确认故障确实存在,发动机起动后故障灯常亮,怠速运转时发动机声音比较正常,部分负荷时噪声较大,空加速比较顺畅。连接诊断设备6150B,进入01-发动机电控系统,读取的故障代码为P0087——燃油油轨/系统压力过低静态;P2188——气缸列1,燃油测量系统怠速转速时系统过浓偶发。读取高转速时燃油压力测量值(图1),发现实际
Symptoms A Tiguan Extreme car with a CEA of 8 532 km (equipped with a CEA engine) reflects the fact that the LED on the dashboard and the engine fault light are on, occasionally starting up, and sometimes accelerating. Fault diagnosis After the car was received, the test car confirmed that the fault did exist. After the engine started, the fault light was always on. When the engine was idling, the engine sound was normal and the noise was larger at part load and the air acceleration was smoother. Connect diagnostic equipment 6150B to 01-engine electronic control system and read fault code P0087 - Fuel rail / system pressure too low static; P2188 - Cylinder line 1, fuel system idling speed system too sporadic. Read the measured fuel pressure at high rpm (Figure 1) and found it real