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(de)檢測方(fang)法如下。
(1) 直觀檢查檢查變速器油(you)溫度傳感器連(lian)接器有(you)無(wu)松動,線(xian)路有(you)無(wu)破損或燒焦等(deng),若有(you),則應予以修復。
(2) 檢測(ce)變(bian)速器(qi)(qi)油(you)(you)溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)的(de)電(dian)(dian)源電(dian)(dian)壓(ya)拔(ba)下變(bian)速器(qi)(qi)油(you)(you)溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)連接(jie)器(qi)(qi),測(ce)量(liang)變(bian)速器(qi)(qi)油(you)(you)溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)插頭(線束側(ce))電(dian)(dian)源端子與搭(da)鐵(tie)之(zhi)間(jian)的(de)電(dian)(dian)壓(ya),應為5V左右。 如果(guo) 電(dian)(dian)壓(ya)低(di)或無電(dian)(dian)壓(ya),則檢修變(bian)速器(qi)(qi)油(you)(you)溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)與ECU之(zhi)間(jian)的(de)線路,若線路良好,則需 更換ECU。
(3) 檢測變(bian)速(su)器(qi)(qi)油(you)溫度傳感器(qi)(qi)的(de)(de)電阻(zu)拔下變(bian)速(su)器(qi)(qi)油(you)溫度傳感器(qi)(qi)連(lian)接器(qi)(qi)后,可拆(chai)下傳感 器(qi)(qi),放在(zai)有水的(de)(de)熱杯中,加熱杯中的(de)(de)水,測量(liang)各種(zhong)不(bu)同溫度下的(de)(de)電阻(zu)值, 若(ruo)檢測的(de)(de)電阻(zu)值與(yu)標準值相差較大(da),則應更換液壓油(you)溫度傳感器(qi)(qi)。
(4) 檢(jian)測(ce)變(bian)(bian)速器(qi)(qi)(qi)油溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)的(de)(de)(de)信號(hao)電(dian)(dian)壓需要時(shi),還可進行變(bian)(bian)速器(qi)(qi)(qi)油溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)信號(hao) 電(dian)(dian)壓的(de)(de)(de)檢(jian)測(ce)。接(jie)好變(bian)(bian)速器(qi)(qi)(qi)油溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)連接(jie)器(qi)(qi)(qi)后(hou),用(yong)直流電(dian)(dian)壓表(biao)測(ce)量變(bian)(bian)速器(qi)(qi)(qi)油溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)兩 端子,或ECU的(de)(de)(de)變(bian)(bian)速器(qi)(qi)(qi)油溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)信號(hao)輸入端子的(de)(de)(de)電(dian)(dian)壓,檢(jian)查在不(bu)同溫(wen)度(du)下的(de)(de)(de)變(bian)(bian)速器(qi)(qi)(qi)油 溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)信號(hao)電(dian)(dian)壓是否在規定的(de)(de)(de)范圍之內。幫(bang)手汽(qi)配(pei)平臺提供各個(ge)車型變(bian)(bian)速器(qi)(qi)(qi)油溫(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)(qi)原車配(pei)件的(de)(de)(de)訂購(gou)服務(wu)
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