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)體的檢(jian)測(ce)方(fang)法如下(xia)。
(1) 直觀(guan)檢查(cha)檢查(cha)變速器油溫度傳(chuan)感(gan)器連接(jie)器有(you)無松動(dong),線路有(you)無破損或燒(shao)焦等,若有(you),則(ze)應予(yu)以(yi)修復。
(2) 檢測變(bian)速器(qi)油(you)溫(wen)(wen)度傳(chuan)(chuan)感器(qi)的電(dian)(dian)源(yuan)(yuan)電(dian)(dian)壓(ya)(ya)拔下(xia)變(bian)速器(qi)油(you)溫(wen)(wen)度傳(chuan)(chuan)感器(qi)連接(jie)器(qi),測量(liang)變(bian)速器(qi)油(you)溫(wen)(wen)度傳(chuan)(chuan)感器(qi)插頭(tou)(線束側)電(dian)(dian)源(yuan)(yuan)端(duan)子與搭鐵之間的電(dian)(dian)壓(ya)(ya),應為5V左(zuo)右(you)。 如果(guo) 電(dian)(dian)壓(ya)(ya)低(di)或無電(dian)(dian)壓(ya)(ya),則檢修變(bian)速器(qi)油(you)溫(wen)(wen)度傳(chuan)(chuan)感器(qi)與ECU之間的線路(lu),若線路(lu)良好(hao),則需 更(geng)換(huan)ECU。
(3) 檢測(ce)變速器(qi)油(you)溫度(du)傳(chuan)感(gan)器(qi)的(de)(de)電阻拔(ba)下變速器(qi)油(you)溫度(du)傳(chuan)感(gan)器(qi)連接器(qi)后,可拆下傳(chuan)感(gan) 器(qi),放在有水的(de)(de)熱(re)(re)杯中(zhong)(zhong),加熱(re)(re)杯中(zhong)(zhong)的(de)(de)水,測(ce)量各種不(bu)同溫度(du)下的(de)(de)電阻值, 若(ruo)檢測(ce)的(de)(de)電阻值與標(biao)準值相(xiang)差較大,則應更換液壓油(you)溫度(du)傳(chuan)感(gan)器(qi)。
(4) 檢(jian)(jian)測變(bian)(bian)(bian)(bian)(bian)速(su)(su)器油(you)(you)溫(wen)(wen)度(du)(du)傳(chuan)感(gan)(gan)器的(de)(de)信(xin)號電(dian)(dian)壓需(xu)要時,還可進行變(bian)(bian)(bian)(bian)(bian)速(su)(su)器油(you)(you)溫(wen)(wen)度(du)(du)傳(chuan)感(gan)(gan)器信(xin)號 電(dian)(dian)壓的(de)(de)檢(jian)(jian)測。接好變(bian)(bian)(bian)(bian)(bian)速(su)(su)器油(you)(you)溫(wen)(wen)度(du)(du)傳(chuan)感(gan)(gan)器連接器后,用直流(liu)電(dian)(dian)壓表測量(liang)變(bian)(bian)(bian)(bian)(bian)速(su)(su)器油(you)(you)溫(wen)(wen)度(du)(du)傳(chuan)感(gan)(gan)器兩 端子,或ECU的(de)(de)變(bian)(bian)(bian)(bian)(bian)速(su)(su)器油(you)(you)溫(wen)(wen)度(du)(du)傳(chuan)感(gan)(gan)器信(xin)號輸入端子的(de)(de)電(dian)(dian)壓,檢(jian)(jian)查在不同溫(wen)(wen)度(du)(du)下的(de)(de)變(bian)(bian)(bian)(bian)(bian)速(su)(su)器油(you)(you) 溫(wen)(wen)度(du)(du)傳(chuan)感(gan)(gan)器信(xin)號電(dian)(dian)壓是否在規定(ding)的(de)(de)范圍之內(nei)。幫手汽配平臺提(ti)供(gong)各(ge)個車(che)型變(bian)(bian)(bian)(bian)(bian)速(su)(su)器油(you)(you)溫(wen)(wen)度(du)(du)傳(chuan)感(gan)(gan)器原車(che)配件的(de)(de)訂購服務
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