自動(dòng)變速箱無(wú)超速擋是指車(chē)輛在行駛過(guò)程中，車(chē)速已升高至超速擋工作范圍，但自動(dòng)變速箱不能從換入超速擋;或者是，在車(chē)速已經(jīng)達(dá)到超速擋工作范圍后，采用提前升擋，即松開(kāi)油門(mén)踏板幾秒后再踩下的方法也不能使自動(dòng)變速箱升入超速擋。
Automatic transmission without overspeed gear means that the speed of the vehicle has risen to the overspeed range in the course of driving, but the automatic transmission can not be replaced by the overspeed gear; or, after the speed has reached the overspeed range, the method of lifting the gear in advance, that is, to release the accelerator pedal after a few seconds and then step down, can not change automatically. The speed box rises to the overspeed gear.
車(chē)輛到維修站點(diǎn)后，如車(chē)輛是電子控制的自動(dòng)變速箱，應(yīng)先對(duì)其進(jìn)行故障自診斷，查看有無(wú)故障碼(如有故障碼，按顯示代碼查找相應(yīng)故障)。變速箱油溫度傳感器、節(jié)氣門(mén)位置傳感器、超速電磁閥等部件的故障都會(huì)影響超速擋的正常使用。
After the vehicle goes to the maintenance site, if the vehicle is an automatic transmission of electronic control, it should first diagnose it and see if there is a fault code (if there is a fault code, according to the display code to find the corresponding fault). The failure of transmission oil temperature sensor, throttle position sensor and overspeed solenoid valve will affect the normal use of the overspeed gear.
濟(jì)南自動(dòng)變速箱維修
濟(jì)南自動(dòng)變速箱維修超速擋開(kāi)關(guān)存在故障也會(huì)導(dǎo)致變速箱無(wú)超速擋。在ON位置時(shí)，超速擋開(kāi)關(guān)的解點(diǎn)應(yīng)斷開(kāi)，閉合超速指示燈不亮;在OFF位置時(shí)，超速擋開(kāi)關(guān)觸點(diǎn)應(yīng)閉合，超速擋指示燈亮起。
Ji'nan automatic transmission maintenance overspeed switch failure will also lead to gearbox without overdrive. At ON position, the solution point of the overspeed switch should be disconnected and the closed overspeed indicator is not bright; at OFF position, the overspeed switch contact should be closed and the overspeed indicator light rises.
檔位開(kāi)關(guān)和節(jié)氣門(mén)位置傳感器信號(hào)的檢查也是必經(jīng)流程。檔位開(kāi)關(guān)信號(hào)應(yīng)與操縱手柄的位置相符。節(jié)氣門(mén)位置傳感器的電阻或輸出電壓應(yīng)能隨節(jié)氣門(mén)的開(kāi)大而上升，并與標(biāo)準(zhǔn)相符。如存在異常，應(yīng)根據(jù)情況作出調(diào)整或更換。
The check of gear switch and throttle position sensor is also a necessary process. The gear switch signal should be in accordance with the position of the control handle. The resistance or output voltage of the throttle position sensor should rise with the opening of the throttle valve and conform to the standard. If there is an exception, it should be adjusted or replaced according to circumstances.
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