當液壓油溫度傳感器連接線路發生斷、短路故障時,控制單元將無法獲得液壓油溫度信息控制自動變速器換擋,使控制系統出現故障。當故障指示燈點亮時,通過人工方法或使用專用儀表(器)可以讀取故障碼。變速器油溫度傳感器的檢測方法與前面所介紹的幾種溫度傳感器相似。
具體的檢測(ce)方法如下。
(1) 直觀檢查檢查變速(su)器油溫度傳感(gan)器連(lian)接器有無(wu)松動,線路(lu)有無(wu)破損或燒焦等,若(ruo)有,則應予以(yi)修復。
(2) 檢測變(bian)速(su)(su)器(qi)(qi)(qi)油(you)(you)溫(wen)度(du)傳(chuan)(chuan)感器(qi)(qi)(qi)的電源電壓拔下變(bian)速(su)(su)器(qi)(qi)(qi)油(you)(you)溫(wen)度(du)傳(chuan)(chuan)感器(qi)(qi)(qi)連(lian)接器(qi)(qi)(qi),測量變(bian)速(su)(su)器(qi)(qi)(qi)油(you)(you)溫(wen)度(du)傳(chuan)(chuan)感器(qi)(qi)(qi)插頭(線(xian)束側)電源端子與搭鐵之(zhi)間的電壓,應(ying)為5V左(zuo)右。 如(ru)果 電壓低或無電壓,則檢修變(bian)速(su)(su)器(qi)(qi)(qi)油(you)(you)溫(wen)度(du)傳(chuan)(chuan)感器(qi)(qi)(qi)與ECU之(zhi)間的線(xian)路,若線(xian)路良好,則需 更(geng)換ECU。
(3) 檢測變(bian)速(su)器(qi)油(you)(you)(you)溫(wen)度傳感器(qi)的電(dian)阻拔(ba)下變(bian)速(su)器(qi)油(you)(you)(you)溫(wen)度傳感器(qi)連接器(qi)后,可拆(chai)下傳感 器(qi),放在有水(shui)的熱杯中(zhong),加熱杯中(zhong)的水(shui),測量各種(zhong)不同溫(wen)度下的電(dian)阻值, 若檢測的電(dian)阻值與標準值相差(cha)較大,則應更換液(ye)壓油(you)(you)(you)溫(wen)度傳感器(qi)。
(4) 檢測變速器(qi)(qi)(qi)(qi)(qi)油(you)溫(wen)(wen)(wen)度(du)(du)傳(chuan)(chuan)感(gan)(gan)器(qi)(qi)(qi)(qi)(qi)的(de)信號電(dian)(dian)壓(ya)需要時,還可進行變速器(qi)(qi)(qi)(qi)(qi)油(you)溫(wen)(wen)(wen)度(du)(du)傳(chuan)(chuan)感(gan)(gan)器(qi)(qi)(qi)(qi)(qi)信號 電(dian)(dian)壓(ya)的(de)檢測。接(jie)好(hao)變速器(qi)(qi)(qi)(qi)(qi)油(you)溫(wen)(wen)(wen)度(du)(du)傳(chuan)(chuan)感(gan)(gan)器(qi)(qi)(qi)(qi)(qi)連接(jie)器(qi)(qi)(qi)(qi)(qi)后,用直流電(dian)(dian)壓(ya)表測量(liang)變速器(qi)(qi)(qi)(qi)(qi)油(you)溫(wen)(wen)(wen)度(du)(du)傳(chuan)(chuan)感(gan)(gan)器(qi)(qi)(qi)(qi)(qi)兩(liang) 端子,或ECU的(de)變速器(qi)(qi)(qi)(qi)(qi)油(you)溫(wen)(wen)(wen)度(du)(du)傳(chuan)(chuan)感(gan)(gan)器(qi)(qi)(qi)(qi)(qi)信號輸(shu)入(ru)端子的(de)電(dian)(dian)壓(ya),檢查在(zai)不同溫(wen)(wen)(wen)度(du)(du)下的(de)變速器(qi)(qi)(qi)(qi)(qi)油(you) 溫(wen)(wen)(wen)度(du)(du)傳(chuan)(chuan)感(gan)(gan)器(qi)(qi)(qi)(qi)(qi)信號電(dian)(dian)壓(ya)是否在(zai)規(gui)定的(de)范圍之(zhi)內。幫手(shou)汽配平(ping)臺提(ti)供各個車型變速器(qi)(qi)(qi)(qi)(qi)油(you)溫(wen)(wen)(wen)度(du)(du)傳(chuan)(chuan)感(gan)(gan)器(qi)(qi)(qi)(qi)(qi)原車配件的(de)訂購服務
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