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。
具體的檢測方法如下。
(1) 直觀檢查檢查變速器油溫度傳感器連接(jie)器有無(wu)(wu)松動,線(xian)路(lu)有無(wu)(wu)破損或(huo)燒焦(jiao)等(deng),若(ruo)有,則應予以修(xiu)復。
(2) 檢測(ce)變速器(qi)油(you)溫度(du)傳(chuan)感(gan)器(qi)的(de)(de)電(dian)(dian)源電(dian)(dian)壓(ya)拔下(xia)變速器(qi)油(you)溫度(du)傳(chuan)感(gan)器(qi)連接器(qi),測(ce)量變速器(qi)油(you)溫度(du)傳(chuan)感(gan)器(qi)插頭(線束側)電(dian)(dian)源端子與(yu)(yu)搭(da)鐵之(zhi)間(jian)的(de)(de)電(dian)(dian)壓(ya),應為5V左右。 如果 電(dian)(dian)壓(ya)低或(huo)無電(dian)(dian)壓(ya),則(ze)檢修變速器(qi)油(you)溫度(du)傳(chuan)感(gan)器(qi)與(yu)(yu)ECU之(zhi)間(jian)的(de)(de)線路(lu),若線路(lu)良好,則(ze)需 更(geng)換ECU。
(3) 檢測變(bian)速(su)器(qi)油溫(wen)度(du)傳(chuan)感(gan)(gan)器(qi)的(de)電阻拔下(xia)變(bian)速(su)器(qi)油溫(wen)度(du)傳(chuan)感(gan)(gan)器(qi)連接器(qi)后,可拆下(xia)傳(chuan)感(gan)(gan) 器(qi),放在有水的(de)熱杯(bei)中(zhong)(zhong),加熱杯(bei)中(zhong)(zhong)的(de)水,測量各種不同溫(wen)度(du)下(xia)的(de)電阻值, 若檢測的(de)電阻值與(yu)標(biao)準值相差較大,則(ze)應(ying)更換液壓油溫(wen)度(du)傳(chuan)感(gan)(gan)器(qi)。
(4) 檢(jian)(jian)測變(bian)(bian)(bian)速(su)(su)器(qi)(qi)(qi)(qi)油(you)(you)(you)(you)(you)溫(wen)(wen)(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)(qi)的(de)信號電壓(ya)需要時(shi),還可進(jin)行變(bian)(bian)(bian)速(su)(su)器(qi)(qi)(qi)(qi)油(you)(you)(you)(you)(you)溫(wen)(wen)(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)(qi)信號 電壓(ya)的(de)檢(jian)(jian)測。接好變(bian)(bian)(bian)速(su)(su)器(qi)(qi)(qi)(qi)油(you)(you)(you)(you)(you)溫(wen)(wen)(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)(qi)連接器(qi)(qi)(qi)(qi)后,用直流電壓(ya)表測量變(bian)(bian)(bian)速(su)(su)器(qi)(qi)(qi)(qi)油(you)(you)(you)(you)(you)溫(wen)(wen)(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)(qi)兩 端(duan)子,或ECU的(de)變(bian)(bian)(bian)速(su)(su)器(qi)(qi)(qi)(qi)油(you)(you)(you)(you)(you)溫(wen)(wen)(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)(qi)信號輸入端(duan)子的(de)電壓(ya),檢(jian)(jian)查在不同溫(wen)(wen)(wen)度(du)下的(de)變(bian)(bian)(bian)速(su)(su)器(qi)(qi)(qi)(qi)油(you)(you)(you)(you)(you) 溫(wen)(wen)(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)(qi)信號電壓(ya)是否在規(gui)定(ding)的(de)范圍(wei)之內。幫(bang)手汽配平臺提(ti)供各個車型變(bian)(bian)(bian)速(su)(su)器(qi)(qi)(qi)(qi)油(you)(you)(you)(you)(you)溫(wen)(wen)(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)(qi)原(yuan)車配件的(de)訂購(gou)服(fu)務
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