故障现象一辆95美款3.0L丰田佳美乘用车,采用1MZ发动机。该车在进行过发动机维护后,出现怠速不稳,急加速熄火;缓慢加速,发动机转速可达2500r/min,但再加速又会熄火的现象。检查分析调取故障代码,为P1335,其含义为曲轴位置传感器或凸轮轴位置传感器信号不良。经测试,传感器的电联线路均正常,点火正时正确检测曲轴位置传感器及凸轮轴位置传感器的信号时发现,凸轮轴位置 Symptoms A 95 US 3.0L Toyota Camry passenger car, using 1MZ engine. After the car has been engine maintenance, there idle instability, rapid acceleration flameout; slow acceleration, the engine speed up to 2500r / min, but the re-acceleration will turn off the phenomenon. Check Analysis Call fault code, P1335, the meaning of the crankshaft position sensor or camshaft position sensor signal is bad. Tested, the sensor’s electric line are normal, the ignition timing correct detection of the crankshaft position sensor and the camshaft position sensor signal found that the camshaft position