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故障现象一辆2007年产一汽马自达6轿车(搭载2.3 L发动机和5速手-自一体变速器),累计行驶里程约4 000 km,出现发动机起动困难,加速无力,并且仪表盘上的发动机故障指示灯点亮的现象。故障诊断经了解得知,该车在低速行驶时轿车底部被碰刮,而后发动机故障指示灯便点亮了。当时驾驶人就自行找当地修理厂进行检查,未发现有明显损伤的部位。驾驶人不放心,向笔者打来求援电话。笔者到达现场后,利用故障检测仪对发动机控制系统进行检测,显示为点火正时方面存在
Symptom A 2007 FAW Mazda 6 sedan (with a 2.3L engine and a 5-speed manual-automatic transmission) has a cumulative mileage of about 4,000 km, causing engine starting difficulties, weak acceleration, and engine fault indications on the dashboard Lights lit phenomenon. Troubleshooting It is understood that the car was driving at low speed the bottom of the car was scratched, and then the engine fault light is lit. At that time, the driver checked the local garage for himself and found no obvious damage to the site. Drivers do not worry, call to the author for help. The author arrived at the scene, the use of fault detector on the engine control system testing showed that there is ignition timing