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(ti)的檢測方法如(ru)下。
(1) 直觀檢(jian)查檢(jian)查變速器油(you)溫(wen)度傳感器連接器有(you)無(wu)松動,線路有(you)無(wu)破(po)損或燒(shao)焦等,若有(you),則應予以修復。
(2) 檢(jian)測變(bian)速器油(you)(you)溫(wen)度傳(chuan)(chuan)感器的電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)壓(ya)(ya)拔下變(bian)速器油(you)(you)溫(wen)度傳(chuan)(chuan)感器連接器,測量(liang)變(bian)速器油(you)(you)溫(wen)度傳(chuan)(chuan)感器插頭(線(xian)(xian)束側)電(dian)(dian)(dian)源(yuan)端(duan)子與搭鐵之(zhi)間的電(dian)(dian)(dian)壓(ya)(ya),應(ying)為5V左右。 如果(guo) 電(dian)(dian)(dian)壓(ya)(ya)低或無(wu)電(dian)(dian)(dian)壓(ya)(ya),則(ze)檢(jian)修變(bian)速器油(you)(you)溫(wen)度傳(chuan)(chuan)感器與ECU之(zhi)間的線(xian)(xian)路(lu),若線(xian)(xian)路(lu)良好,則(ze)需 更換ECU。
(3) 檢測變速(su)器(qi)油(you)溫(wen)(wen)度(du)傳感(gan)器(qi)的(de)電(dian)(dian)阻拔下(xia)變速(su)器(qi)油(you)溫(wen)(wen)度(du)傳感(gan)器(qi)連接器(qi)后,可拆下(xia)傳感(gan) 器(qi),放在(zai)有水(shui)(shui)的(de)熱杯(bei)中,加熱杯(bei)中的(de)水(shui)(shui),測量(liang)各(ge)種不同溫(wen)(wen)度(du)下(xia)的(de)電(dian)(dian)阻值, 若檢測的(de)電(dian)(dian)阻值與(yu)標(biao)準值相(xiang)差較大,則應更換液壓油(you)溫(wen)(wen)度(du)傳感(gan)器(qi)。
(4) 檢測變(bian)(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)油(you)(you)溫(wen)(wen)(wen)(wen)度(du)(du)(du)傳感(gan)(gan)器(qi)(qi)(qi)(qi)的(de)(de)信(xin)(xin)號(hao)(hao)電(dian)(dian)壓需要時,還可進行變(bian)(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)油(you)(you)溫(wen)(wen)(wen)(wen)度(du)(du)(du)傳感(gan)(gan)器(qi)(qi)(qi)(qi)信(xin)(xin)號(hao)(hao) 電(dian)(dian)壓的(de)(de)檢測。接好變(bian)(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)油(you)(you)溫(wen)(wen)(wen)(wen)度(du)(du)(du)傳感(gan)(gan)器(qi)(qi)(qi)(qi)連接器(qi)(qi)(qi)(qi)后,用(yong)直流電(dian)(dian)壓表測量(liang)變(bian)(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)油(you)(you)溫(wen)(wen)(wen)(wen)度(du)(du)(du)傳感(gan)(gan)器(qi)(qi)(qi)(qi)兩 端子,或ECU的(de)(de)變(bian)(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)油(you)(you)溫(wen)(wen)(wen)(wen)度(du)(du)(du)傳感(gan)(gan)器(qi)(qi)(qi)(qi)信(xin)(xin)號(hao)(hao)輸入端子的(de)(de)電(dian)(dian)壓,檢查在不同溫(wen)(wen)(wen)(wen)度(du)(du)(du)下的(de)(de)變(bian)(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)油(you)(you) 溫(wen)(wen)(wen)(wen)度(du)(du)(du)傳感(gan)(gan)器(qi)(qi)(qi)(qi)信(xin)(xin)號(hao)(hao)電(dian)(dian)壓是否(fou)在規定的(de)(de)范圍之(zhi)內。幫手汽配(pei)平臺提供各(ge)個車(che)型變(bian)(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)油(you)(you)溫(wen)(wen)(wen)(wen)度(du)(du)(du)傳感(gan)(gan)器(qi)(qi)(qi)(qi)原車(che)配(pei)件的(de)(de)訂(ding)購服務
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