高速行驶时发动机突然无法加速故障现象一辆一汽丰田RAV4车(装配2AZ发动机),行驶里程仅为约5万km,在高速行驶时,发动机突然无法加速,同时发动机故障灯点亮,接着停车后,发动机怠速抖动严重,并且踩加速踏板没有反应。但将发动机熄火后重新起动,发动机工作恢复正常。检查分析连接IT-Ⅱ进行检测,调得了以下故障代码:P0607——输入信号电路异常;C1201——发动机控制系统故障。查阅维修手册,P0607的检测条件是满足以下任一条件:一是巡行控制输入信号异常;二是制动灯开关输入信号异常。故障部位为发动机ECM。C1201的检测条件是发动机故障信号持续1 s或更长时间,故障部位是发动机控制系统。接着查看数据列表,发现故障发生时车速为150 km/h。记录故障代码后再将其清除,对巡行控制系统和制动灯开关输入信号电路逐一进行检查,无异常。检查节气门、加速踏 Suddenly unable to accelerate the engine at high speed Fault phenomenon FAW Toyota RAV4 car (with 2AZ engine), mileage is only about 50,000 km at high speed, the engine suddenly failed to accelerate, while the engine fault light is lit, and then stop , The engine idle jitter serious, and did not respond to step on the accelerator pedal. However, the engine is restarted after the flameout, and the engine work resumes normal. Check analysis Connect IT-Ⅱ for testing, tune the following fault code: P0607 - input signal circuit abnormalities; C1201 - engine control system failure. Check the maintenance manual, P0607 test conditions are to meet any of the following conditions: First, the cruise control input signal is abnormal; the second is the brake light switch input signal is abnormal. Fault location for the engine ECM. C1201 test condition is the engine fault signal for 1 s or longer, the fault location is the engine control system. Then look at the data list and found that the speed of the fault was 150 km / h. After the fault code is recorded, it is cleared, and the inspection control system and the brake light switch input signal circuit are checked one by one without any exception. Check the throttle, accelerating