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故障现象一辆行驶里程约为11万km的中华骏捷1.5 L轿车(装备4A9发动机),驾驶人反映该车发动机熄火后无法起动,发动机故障灯常亮。故障诊断接车后首先试车验证故障现象,试车时发现该车起动机运转有力,有着火征兆,起动时发动机转速表指针能转动。仔细询问驾驶人得知,该车平时跑工地较多,路况复杂,汽车突然发生熄火故障时,刚经过一段涉水路面。利用故障检测仪读取故障代码,得到2个故障代码:一个故障代码是P0107,其含义是“进气歧管绝对压力传感器信号电压过低”;另一个故障代码是P0337,其含义是“转速传感器信号电压过低”。清除故障代码后,再次读取故
Trouble phenomenon A mileage of about 110,000 km of Junjie 1.5L sedan (equipped with 4A9 engine), the driver reflects the car engine can not start after the flameout, the engine fault light is always on. Fault diagnosis After the first test car to verify the failure of the phenomenon, the test found that the car started running strong, with a fire sign, start tachometer pointer can rotate. Carefully asked the driver that the car usually run more sites, complex road conditions, the car suddenly stalling failure, just after a period of wading. Fault code read using the fault detector, get two fault codes: a fault code is P0107, its meaning is “intake manifold absolute pressure sensor signal voltage is too low ”; another fault code is P0337, its meaning is “Speed sensor signal voltage is too low ”. After clearing the fault code, read it again