故障现象一辆捷达轿车,底盘号为LFV2A11G1A3******,累计行驶里程约为6.5万km,出现发动机怠速运转正常,踩加速踏板加速时EPC灯点亮,加速无力的故障现象。故障诊断接车后首先试车确认故障现象,属实。接着连接VAS5052A读取故障代码,读得的故障代码分别为16885——车速信号1不可信信号静态;18041——加速踏板位置传感器2-G185信号太小静态(图1)。 Fault phenomenon A Jetta sedan, chassis number LFV2A11G1A3 ******, a total mileage of about 65,000 km, the engine idling normal operation, accelerate the accelerator pedal acceleration EPC lights, acceleration weakness of the fault phenomenon. After the diagnosis of the first test car to confirm the fault phenomenon, is true. Then connect the VAS5052A to read the error code, read the error code is 16885 - speed signal 1 unreliable signal static; 18041 - accelerator pedal position sensor 2-G185 signal is too small static (Figure 1).