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故障现象一辆仅行驶70 km的2014款奥迪A6 C7轿车(发动机型号为CDZ),客户反映无法起动。故障诊断接车后首先验证故障现象。接通点火开关,起动发动机,发动机无法起动,故障属实。从声音判断,起动机运转正常,发动机无着机迹象,表明该车故障不是由起动机方面的原因造成的,主要应从发动机供油、点火电路、进排气管路、控制系统及信号(曲轴位置传感器信号、凸轮轴位置传感器信号、挡位信号)、发动机机械等方面着手进行检查。
Symptom A 70-km-long 2014 Audi A6 C7 sedan (engine model CDZ) was reported by customers and could not be started. Troubleshooting After the first car to verify the fault phenomenon. Turn on the ignition switch, start the engine, the engine can not start, the fault is true. Judging from the sound, the starter is running normally and there is no indication of engine failure, indicating that the fault of the vehicle is not caused by the cause of the starter. The main reason is that the engine oil supply, ignition circuit, intake and exhaust lines, control system and signal Position sensor signal, camshaft position sensor signal, gear signal), engine and other aspects of machinery to carry out inspection.