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一辆皇冠3.0乘用车,发动机怠速不稳,调节怠速调整螺钉不起作用。检查分析该车具有自诊断功能。打开发动机舱盖,开启标有“DIAGNOSIS”的塑料盖,用一根短导线短接TE1和E1两个插孔,然后将点火开关置于ON。仪表板上的故障指示灯开始有规律地闪烁4次和1次,表示故障代码为41。查阅有关资料,表明节气门位置传感器有故障。该车节气门位置传感器为线性输出型结构,其上有4个接柱,分别为VC(电源)、IDL(怠速)、VTA(输出)和E2(接地)。经查其接线良好,外观无任何异常,但连接器的插头已锈蚀,从而造成接触不良。
A Crown 3.0 passenger car, the engine idle speed instability, adjust the idle speed adjustment screw does not work. Check the car has a self-diagnostic function. Open the bonnet and open the plastic cover labeled “DIAGNOSIS”. Short the two TE1 and E1 jacks with a short lead and turn the ignition switch ON. The dash light on the dashboard starts to flash regularly 4 times and once, indicating the error code is 41. Check the information to indicate that the throttle position sensor is defective. The throttle position sensor for the car is a linear output configuration with four posts, VC (power), IDL (idle), VTA (output) and E2 (ground). The investigation of its wiring is good, the appearance of any abnormalities, but the connector plug has been corroded, resulting in poor contact.