修理(li)過(guo)程：測水溫(wen)傳感器電(dian)(dian)(dian)阻基本正常。拔下位于發(fa)動機室乘客(ke)側防火墻(qiang)上兩個風(feng)扇(shan)繼電(dian)(dian)(dian)器，測兩個繼電(dian)(dian)(dian)器控(kong)制(zhi)線(xian)圈兩端對(dui)地(di)均無電(dian)(dian)(dian)壓。查控(kong)制(zhi)繼電(dian)(dian)(dian)器盒內保險(xian)絲，發(fa)現(xian)(xian)17 號(hao)10A 保險(xian)絲斷，用萬用表測電(dian)(dian)(dian)阻發(fa)現(xian)(xian)有短(duan)路(lu)現(xian)(xian)象。仔細檢查發(fa)現(xian)(xian)線(xian)束被空調儲(chu)液罐(guan)旁(pang)一爪磨破(po)，其(qi)中一淡藍色(se)/黑色(se)線(xian)正是控(kong)制(zhi)風(feng)扇(shan)的線(xian)。
匯總：因過壓形成燒商(shang)業(ye)險(xian)服(fu)務，類似(si)這些物理現象應(ying)追(zhui)查商(shang)業(ye)險(xian)服(fu)務絲燒的根本原因，以免換商(shang)業(ye)險(xian)服(fu)務絲后一定會(hui)再燒。
