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(ti)的檢測(ce)方法如(ru)下。
(1) 直觀檢查(cha)檢查(cha)變速器(qi)油溫度(du)傳感器(qi)連接器(qi)有無松動,線(xian)路有無破損或燒焦等,若有,則應予以(yi)修復。
(2) 檢測變(bian)速(su)器(qi)(qi)油(you)溫(wen)度傳感(gan)(gan)器(qi)(qi)的電(dian)(dian)(dian)源電(dian)(dian)(dian)壓拔下(xia)變(bian)速(su)器(qi)(qi)油(you)溫(wen)度傳感(gan)(gan)器(qi)(qi)連接器(qi)(qi),測量變(bian)速(su)器(qi)(qi)油(you)溫(wen)度傳感(gan)(gan)器(qi)(qi)插(cha)頭(線(xian)束(shu)側)電(dian)(dian)(dian)源端子(zi)與(yu)(yu)搭鐵之間的電(dian)(dian)(dian)壓,應為5V左右。 如(ru)果(guo) 電(dian)(dian)(dian)壓低或(huo)無(wu)電(dian)(dian)(dian)壓,則檢修變(bian)速(su)器(qi)(qi)油(you)溫(wen)度傳感(gan)(gan)器(qi)(qi)與(yu)(yu)ECU之間的線(xian)路,若線(xian)路良好,則需 更換ECU。
(3) 檢(jian)測(ce)(ce)變速(su)器(qi)(qi)(qi)油(you)溫度(du)傳感(gan)(gan)器(qi)(qi)(qi)的(de)電阻拔下(xia)變速(su)器(qi)(qi)(qi)油(you)溫度(du)傳感(gan)(gan)器(qi)(qi)(qi)連接器(qi)(qi)(qi)后,可拆(chai)下(xia)傳感(gan)(gan) 器(qi)(qi)(qi),放在有水的(de)熱(re)杯(bei)中,加熱(re)杯(bei)中的(de)水,測(ce)(ce)量各種(zhong)不同溫度(du)下(xia)的(de)電阻值(zhi)(zhi), 若(ruo)檢(jian)測(ce)(ce)的(de)電阻值(zhi)(zhi)與(yu)標準值(zhi)(zhi)相(xiang)差較大,則應(ying)更換液壓油(you)溫度(du)傳感(gan)(gan)器(qi)(qi)(qi)。
(4) 檢(jian)測(ce)(ce)變(bian)(bian)(bian)(bian)速(su)器(qi)(qi)油(you)(you)(you)溫(wen)(wen)(wen)度(du)(du)傳感(gan)(gan)器(qi)(qi)的信號電(dian)壓(ya)需要時(shi),還(huan)可進行變(bian)(bian)(bian)(bian)速(su)器(qi)(qi)油(you)(you)(you)溫(wen)(wen)(wen)度(du)(du)傳感(gan)(gan)器(qi)(qi)信號 電(dian)壓(ya)的檢(jian)測(ce)(ce)。接好變(bian)(bian)(bian)(bian)速(su)器(qi)(qi)油(you)(you)(you)溫(wen)(wen)(wen)度(du)(du)傳感(gan)(gan)器(qi)(qi)連接器(qi)(qi)后,用直流電(dian)壓(ya)表測(ce)(ce)量變(bian)(bian)(bian)(bian)速(su)器(qi)(qi)油(you)(you)(you)溫(wen)(wen)(wen)度(du)(du)傳感(gan)(gan)器(qi)(qi)兩 端子,或ECU的變(bian)(bian)(bian)(bian)速(su)器(qi)(qi)油(you)(you)(you)溫(wen)(wen)(wen)度(du)(du)傳感(gan)(gan)器(qi)(qi)信號輸(shu)入端子的電(dian)壓(ya),檢(jian)查在不同(tong)溫(wen)(wen)(wen)度(du)(du)下的變(bian)(bian)(bian)(bian)速(su)器(qi)(qi)油(you)(you)(you) 溫(wen)(wen)(wen)度(du)(du)傳感(gan)(gan)器(qi)(qi)信號電(dian)壓(ya)是否在規定的范圍之內。幫手汽配平臺提供(gong)各(ge)個(ge)車(che)型變(bian)(bian)(bian)(bian)速(su)器(qi)(qi)油(you)(you)(you)溫(wen)(wen)(wen)度(du)(du)傳感(gan)(gan)器(qi)(qi)原車(che)配件的訂購服務(wu)
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