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(ju)體的(de)檢測方法如下。
(1) 直觀檢(jian)(jian)查檢(jian)(jian)查變速器(qi)油溫(wen)度傳感器(qi)連接器(qi)有(you)無(wu)松(song)動,線路有(you)無(wu)破損或燒焦(jiao)等,若有(you),則應予以修復。
(2) 檢測變(bian)(bian)速(su)(su)器(qi)(qi)油(you)溫度(du)傳(chuan)感(gan)(gan)器(qi)(qi)的(de)電(dian)(dian)源電(dian)(dian)壓(ya)拔下變(bian)(bian)速(su)(su)器(qi)(qi)油(you)溫度(du)傳(chuan)感(gan)(gan)器(qi)(qi)連接器(qi)(qi),測量(liang)變(bian)(bian)速(su)(su)器(qi)(qi)油(you)溫度(du)傳(chuan)感(gan)(gan)器(qi)(qi)插頭(線(xian)束側)電(dian)(dian)源端子與(yu)搭(da)鐵之(zhi)間的(de)電(dian)(dian)壓(ya),應(ying)為5V左(zuo)右(you)。 如果(guo) 電(dian)(dian)壓(ya)低(di)或無(wu)電(dian)(dian)壓(ya),則(ze)檢修(xiu)變(bian)(bian)速(su)(su)器(qi)(qi)油(you)溫度(du)傳(chuan)感(gan)(gan)器(qi)(qi)與(yu)ECU之(zhi)間的(de)線(xian)路,若線(xian)路良好(hao),則(ze)需 更換(huan)ECU。
(3) 檢測變速器(qi)油(you)溫(wen)(wen)度(du)傳感(gan)器(qi)的(de)(de)電(dian)阻拔下(xia)變速器(qi)油(you)溫(wen)(wen)度(du)傳感(gan)器(qi)連接(jie)器(qi)后,可拆(chai)下(xia)傳感(gan) 器(qi),放在有水的(de)(de)熱杯中(zhong)(zhong),加熱杯中(zhong)(zhong)的(de)(de)水,測量各種不同(tong)溫(wen)(wen)度(du)下(xia)的(de)(de)電(dian)阻值(zhi), 若檢測的(de)(de)電(dian)阻值(zhi)與標準值(zhi)相差較大,則應更換(huan)液壓(ya)油(you)溫(wen)(wen)度(du)傳感(gan)器(qi)。
(4) 檢測變(bian)(bian)速器(qi)(qi)(qi)(qi)油溫(wen)(wen)度(du)傳感(gan)器(qi)(qi)(qi)(qi)的(de)(de)信(xin)號電(dian)(dian)壓(ya)(ya)需要時,還可進(jin)行變(bian)(bian)速器(qi)(qi)(qi)(qi)油溫(wen)(wen)度(du)傳感(gan)器(qi)(qi)(qi)(qi)信(xin)號 電(dian)(dian)壓(ya)(ya)的(de)(de)檢測。接好變(bian)(bian)速器(qi)(qi)(qi)(qi)油溫(wen)(wen)度(du)傳感(gan)器(qi)(qi)(qi)(qi)連(lian)接器(qi)(qi)(qi)(qi)后,用直流(liu)電(dian)(dian)壓(ya)(ya)表測量變(bian)(bian)速器(qi)(qi)(qi)(qi)油溫(wen)(wen)度(du)傳感(gan)器(qi)(qi)(qi)(qi)兩 端子,或ECU的(de)(de)變(bian)(bian)速器(qi)(qi)(qi)(qi)油溫(wen)(wen)度(du)傳感(gan)器(qi)(qi)(qi)(qi)信(xin)號輸入端子的(de)(de)電(dian)(dian)壓(ya)(ya),檢查在不同溫(wen)(wen)度(du)下的(de)(de)變(bian)(bian)速器(qi)(qi)(qi)(qi)油 溫(wen)(wen)度(du)傳感(gan)器(qi)(qi)(qi)(qi)信(xin)號電(dian)(dian)壓(ya)(ya)是否在規定的(de)(de)范圍之(zhi)內。幫(bang)手汽配平臺提供各(ge)個車型(xing)變(bian)(bian)速器(qi)(qi)(qi)(qi)油溫(wen)(wen)度(du)傳感(gan)器(qi)(qi)(qi)(qi)原(yuan)車配件的(de)(de)訂購(gou)服務
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