案例1 帕萨特领驭车发动机故障灯异常点亮故障现象 一辆2010年产的帕萨特领驭1.8T轿车,搭载CED发动机,行驶里程约为3.9万km。据驾驶人反映,该车发动机故障灯异常点亮。故障诊断 用VAS5051B进行检测,发动机控制单元内存储有故障代码17705和17545(图1)。发动机控制单元存储故障代码17705的条件为:增压压力传感器提供的增压压力 Case 1 Passat led car engine fault light abnormalities lit Fault phenomenon A 2010 Passat Passat 1.8T sedan equipped with CED engine, mileage of about 39,000 km. According to the driver reflected that the car engine fault light abnormal lighting. Fault diagnosis is checked with the VAS5051B and the engine control unit has error codes 17705 and 17545 (Figure 1). The engine control unit stores fault code 17705 under the conditions: boost pressure provided by boost pressure sensor