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(ce)方法如下(xia)。
(1) 直(zhi)觀檢(jian)查檢(jian)查變速器油溫度傳感器連(lian)接器有(you)無松動,線(xian)路有(you)無破損或(huo)燒焦(jiao)等(deng),若有(you),則應予(yu)以修復。
(2) 檢測(ce)變速(su)器(qi)(qi)油溫(wen)度(du)(du)傳(chuan)感(gan)(gan)器(qi)(qi)的電(dian)源電(dian)壓拔下(xia)變速(su)器(qi)(qi)油溫(wen)度(du)(du)傳(chuan)感(gan)(gan)器(qi)(qi)連(lian)接(jie)器(qi)(qi),測(ce)量變速(su)器(qi)(qi)油溫(wen)度(du)(du)傳(chuan)感(gan)(gan)器(qi)(qi)插頭(tou)(線(xian)束側)電(dian)源端子與搭(da)鐵之間(jian)的電(dian)壓,應為(wei)5V左右。 如(ru)果(guo) 電(dian)壓低或無(wu)電(dian)壓,則檢修變速(su)器(qi)(qi)油溫(wen)度(du)(du)傳(chuan)感(gan)(gan)器(qi)(qi)與ECU之間(jian)的線(xian)路,若線(xian)路良好,則需 更(geng)換(huan)ECU。
(3) 檢(jian)測(ce)變速器(qi)(qi)(qi)油溫度傳(chuan)感器(qi)(qi)(qi)的(de)(de)電阻拔下(xia)變速器(qi)(qi)(qi)油溫度傳(chuan)感器(qi)(qi)(qi)連接器(qi)(qi)(qi)后,可(ke)拆下(xia)傳(chuan)感 器(qi)(qi)(qi),放(fang)在有水(shui)的(de)(de)熱杯(bei)(bei)中,加熱杯(bei)(bei)中的(de)(de)水(shui),測(ce)量各種不(bu)同溫度下(xia)的(de)(de)電阻值, 若檢(jian)測(ce)的(de)(de)電阻值與標準值相差較大,則應更換液壓(ya)油溫度傳(chuan)感器(qi)(qi)(qi)。
(4) 檢(jian)(jian)測變(bian)速(su)器(qi)(qi)油(you)溫度(du)(du)(du)(du)傳(chuan)(chuan)感(gan)器(qi)(qi)的(de)信號(hao)電壓(ya)需要時(shi),還可進(jin)行變(bian)速(su)器(qi)(qi)油(you)溫度(du)(du)(du)(du)傳(chuan)(chuan)感(gan)器(qi)(qi)信號(hao) 電壓(ya)的(de)檢(jian)(jian)測。接好變(bian)速(su)器(qi)(qi)油(you)溫度(du)(du)(du)(du)傳(chuan)(chuan)感(gan)器(qi)(qi)連接器(qi)(qi)后,用(yong)直流電壓(ya)表(biao)測量變(bian)速(su)器(qi)(qi)油(you)溫度(du)(du)(du)(du)傳(chuan)(chuan)感(gan)器(qi)(qi)兩 端(duan)子,或ECU的(de)變(bian)速(su)器(qi)(qi)油(you)溫度(du)(du)(du)(du)傳(chuan)(chuan)感(gan)器(qi)(qi)信號(hao)輸入端(duan)子的(de)電壓(ya),檢(jian)(jian)查在不同(tong)溫度(du)(du)(du)(du)下(xia)的(de)變(bian)速(su)器(qi)(qi)油(you) 溫度(du)(du)(du)(du)傳(chuan)(chuan)感(gan)器(qi)(qi)信號(hao)電壓(ya)是否在規(gui)定的(de)范(fan)圍之(zhi)內。幫(bang)手汽配平臺提供各個車型(xing)變(bian)速(su)器(qi)(qi)油(you)溫度(du)(du)(du)(du)傳(chuan)(chuan)感(gan)器(qi)(qi)原車配件的(de)訂(ding)購(gou)服務(wu)
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