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故障现象一辆2013款奔驰C 26 0车,底盘号为LE4204047,搭载M271 EVO发动机,累计行驶里程约为5万km,车主反映,发动机无法起动。故障诊断接车后首先试车验证故障现象。接通点火开关,起动发动机,起动机运转有力,发动机无法起动。用故障检测仪(XENTRY)对车辆进行快速测试,快速测试结果如图1所示,燃油泵控制单元(N118)不能被识别,发动机控制单元(N3/10)内存储有故障代码
Trouble phenomenon A 2013 Mercedes C 26 car, chassis number LE4204047, equipped with M271 EVO engine, the cumulative mileage of about 50,000 km, the owner reflects the engine can not start. Troubleshooting After the first test car to verify the fault phenomenon. Turn the ignition switch, start the engine, the starter is running strong, the engine can not start. The vehicle is rapidly tested with a fault detector (XENTRY). The results of the quick test are shown in Figure 1. The fuel pump control unit (N118) can not be identified and the engine control unit (N3 / 10) has a fault code