常見的(de)(de)家(jia)用新能(neng)源(yuan)小(xiao)轎車(che)的(de)(de)汽(qi)車(che)電(dian)池包電(dian)壓有(you)300V以上，新能(neng)源(yuan)物流(liu)車(che)、貨車(che)、公交(jiao)車(che)的(de)(de)電(dian)池包電(dian)壓會更高(gao)，新能(neng)源(yuan)汽(qi)車(che)維修，萬一遇到交(jiao)通(tong)事故、涉(she)水、車(che)輛突發故障等緊急的(de)(de)情況，需要(yao)應急切斷(duan)電(dian)源(yuan)時該怎么操(cao)作(zuo)呢？

一(yi)、關(guan)閉電(dian)源(yuan)，部(bu)分車(che)(che)是拔掉(diao)鑰匙(chi)，新能源(yuan)汽車(che)(che)租(zu)賃，一(yi)鍵啟(qi)動的車(che)(che)輛需要將鑰匙(chi)撤離，類似特斯拉沒有(you)一(yi)鍵啟(qi)動的車(che)(che)輛，只(zhi)需要將鑰匙(chi)撤離。

二、斷開低(di)壓電瓶負極接頭(tou)

斷開小電(dian)(dian)瓶(ping)負極接(jie)頭(tou)前，新能源汽車(che)專賣(mai)店，大家要三思(si)而(er)后行，因為(wei)低壓電(dian)(dian)瓶(ping)是整輛車(che)所有車(che)載儀器的(de)電(dian)(dian)源，一(yi)旦斷開儀哭將不再工(gong)作。低壓電(dian)(dian)瓶(ping)一(yi)般位于前機艙位置，打(da)開前機艙蓋即可看到。注意與正級(ji)接(jie)同區分開，避(bi)免觸電(dian)(dian)。

讀取故(gu)(gu)障(zhang)(zhang)碼(ma)的(de)步驟如下(xia)：①OK擋(dang)電(dian)下(xia)用VDS讀取故(gu)(gu)障(zhang)(zhang)碼(ma)并(bing)記(ji)錄(lu)(lu)。②VDS執(zhi)行(xing)(xing)清(qing)除故(gu)(gu)障(zhang)(zhang)命(ming)令，退電(dian)到OFF擋(dang)再上OK擋(dang)電(dian)，讀取故(gu)(gu)障(zhang)(zhang)碼(ma)并(bing)記(ji)錄(lu)(lu)。③讓故(gu)(gu)障(zhang)(zhang)重現，讀取故(gu)(gu)障(zhang)(zhang)碼(ma)并(bing)記(ji)錄(lu)(lu)。根據故(gu)(gu)障(zhang)(zhang)碼(ma)及故(gu)(gu)障(zhang)(zhang)的(de)相(xiang)關(guan)(guan)性分為三個等(deng)(deng)級(ji)(ji)：相(xiang)關(guan)(guan)等(deng)(deng)級(ji)(ji)3：故(gu)(gu)障(zhang)(zhang)重現才(cai)能讀取的(de)故(gu)(gu)障(zhang)(zhang)碼(ma)；相(xiang)關(guan)(guan)等(deng)(deng)級(ji)(ji)2：VDS執(zhi)行(xing)(xing)清(qing)除故(gu)(gu)障(zhang)(zhang)命(ming)令清(qing)除不了的(de)故(gu)(gu)障(zhang)(zhang)碼(ma)或(huo)清(qing)除后退電(dian)再重新上OK擋(dang)電(dian)又出現的(de)故(gu)(gu)障(zhang)(zhang)碼(ma)；相(xiang)關(guan)(guan)等(deng)(deng)級(ji)(ji)1：未執(zhi)行(xing)(xing)VDS清(qing)除命(ming)令時OK擋(dang)電(dian)下(xia)讀取的(de)故(gu)(gu)障(zhang)(zhang)碼(ma)。根據VDS診斷情(qing)況，按如下(xia)思路進(jin)行(xing)(xing)故(gu)(gu)障(zhang)(zhang)排查：有相(xiang)關(guan)(guan)等(deng)(deng)級(ji)(ji)2或(huo)3的(de)故(gu)(gu)障(zhang)(zhang)碼(ma)依據故(gu)(gu)障(zhang)(zhang)碼(ma)排查處理

執(zhi)(zhi)行(xing)更(geng)(geng)換(huan)部件(jian)操作前先(xian)用VDS檢查(cha)高壓系統零部件(jian)是(shi)否有(you)軟件(jian)版(ban)本更(geng)(geng)新(xin)(xin)(xin)(xin)，若有(you)更(geng)(geng)新(xin)(xin)(xin)(xin)需更(geng)(geng)新(xin)(xin)(xin)(xin)到版(ban)本，若仍(reng)存(cun)在故(gu)障再進行(xing)更(geng)(geng)換(huan)。VCU系統故(gu)障碼定(ding)義與排查(cha)方法(fa)▼（2）排查(cha)相(xiang)(xiang)關(guan)線(xian)路(lu)的(de)(de)連(lian)通(tong)性(xing)用VDS診斷的(de)(de)過(guo)程中只有(you)相(xiang)(xiang)關(guan)等級1的(de)(de)故(gu)障碼或未讀取任何(he)故(gu)障碼的(de)(de)情況，需要(yao)根據故(gu)障現(xian)象去排查(cha)相(xiang)(xiang)關(guan)線(xian)路(lu)的(de)(de)連(lian)通(tong)性(xing)。用VDS先(xian)檢查(cha)是(shi)否有(you)高壓零部件(jian)有(you)軟件(jian)版(ban)本更(geng)(geng)新(xin)(xin)(xin)(xin)，若有(you)更(geng)(geng)新(xin)(xin)(xin)(xin)需要(yao)更(geng)(geng)新(xin)(xin)(xin)(xin)到版(ban)本，新(xin)(xin)(xin)(xin)能(neng)源汽(qi)車(che)，若仍(reng)存(cun)在故(gu)障，則用萬(wan)用表排查(cha)相(xiang)(xiang)關(guan)線(xian)路(lu)的(de)(de)連(lian)通(tong)性(xing)。結合故(gu)障現(xian)象并(bing)參考相(xiang)(xiang)關(guan)模塊的(de)(de)端(duan)子定(ding)義中的(de)(de)線(xian)束接法(fa)去檢查(cha)相(xiang)(xiang)應線(xian)路(lu)的(de)(de)連(lian)通(tong)性(xing)。4VCU電腦編程更(geng)(geng)換(huan)完(wan)成新(xin)(xin)(xin)(xin)的(de)(de)整車(che)控制器后(hou)，需要(yao)使用VDS執(zhi)(zhi)行(xing)傾角標定(ding)