I-P20BD Reducer Heater Control Circuit B / Vula

I-P20BD Reducer Heater Control Circuit B / Vula

Idatha ye-OBD-II DTC

Isifunda esilawula ukushisa kwe-heater B / evulekile

Kusho ukuthini lokhu?

Le Khodi Yezinkinga Zokuxilonga (i-DTC) iyikhodi yokudlulisela ejwayelekile futhi isebenza ezimotweni eziningi zedizili ze-OBD-II (1996 nezintsha). Lokhu kungafaka, kodwa kungagcini lapho, iFord, Mercedes Benz, Sprinter, Audi, Ram, Chevrolet, Dodge, BMW, GMC, njll. Naphezu kwemvelo ejwayelekile, izinyathelo eziqondile zokulungisa zingahluka ngokuya ngonyaka wokwenziwa, umkhiqizo , amamodeli wokudlulisa nokulungiswa. ...

Ikhodi egcinwe i-P20BD isho ukuthi i-powertrain control module (PCM) ayitholakalanga i-voltage kusekhethi yokulawula ye-heater on-board reductant ekhonjiswe ngohlamvu B. Leli gama lisetshenziswa lapho kusetshenziswa ama-heater amaningi anciphisa, sicela ubheke imoto. imanuwali yeworkshop ukuthola ukuthi yiluphi uchungechunge lwe-B olulungele isicelo sakho.

Uhlelo lwe-catalyst lubhekele ukunciphisa (ikakhulukazi) konke okunye ukukhishwa kwe-exhaust, yize ezinye izinhlelo zokusebenza nazo zifakwe isicupho se-NOx.

Izinhlelo ze-Exhaust Gas Recirculation (EGR) zithatha esinye isinyathelo ekwehliseni ukukhishwa kwe-NOx. Kodwa-ke, izinjini zikadizili zikanamuhla ezinkulu nezinamandla kakhulu azikwazi ukuhlangabezana nezindinganiso eziqinile ze-federal (US) zokukhishwa ngohlelo lwe-EGR nje, isihlungi se-particulate / catalytic converter, kanye noxhaka lwe-NOx. Ngalesi sizathu, kusungulwe izinhlelo ezikhethiwe zokunciphisa (i-SCR).

Amasistimu we-SCR ajove i-ejenti yokwehlisa i-ejenti noma i-Diesel Exhaust Fluid (DEF) kumagesi aqeda phezulu enhla yesihlungi se-particulate kanye / noma isiguquli se-catalytic. Umjovo obalwe ngokunembile we-DEF uphakamisa izinga lokushisa kwento yokuhlunga futhi uyivumele ukuthi isebenze kahle. Lokhu kunweba impilo yokusebenza kwento yokuhlunga futhi kusiza ekwehliseni ukukhishwa kwamagesi ayingozi okukhipha emkhathini.

Lonke uhlelo lwe-SCS lubhekiwe futhi lulawulwa yi-PCM noma isilawuli esizimele sodwa (esisebenzisana ne-PCM). Kunoma ikuphi, isilawuli sihlola izinzwa ze-O2, NOx nezokushisa kwegesi (kanye nokunye okufakwayo) ukuthola isikhathi esifanele somjovo we-DEF (owehlisayo). Umjovo we-Precision DEF uyadingeka ukugcina ukushisa kwegesi okukhipha ngaphakathi kwemingcele eyamukelekayo nokwenza ngcono ukuhlunga kokungcola.

Kusetshenziswa ama-heater ejenti anciphisa ukuvimbela uketshezi lwenjini yedizili ekuqandeni emazingeni okushisa aphezulu. Lezi zifudumezi zivame ukutholakala echibini le-DEF kanye / noma ku-hose (s) yokuhlinzekwa kombhobho wokunciphisa i-ejenti.

Uma i-PCM ithola ukungabi namandla kwamandla wesekhethi wokunciphisa i-heater, i-P20BD izogcinwa futhi isibani sesikhombisi esingasebenzi kahle singakhanyisa.

Ukunciphisa ama-heater ejenti angatholakala ngaphakathi kwethangi le-DEF (isibonelo esiboniswe lapha):

Buyini ubunzima bale DTC?

Ikhodi ye-P20BD egciniwe kufanele iphathwe njengebucayi futhi kufanele ixazululwe ngokushesha okukhulu. Uhlelo lwe-SCR lungakhubazeka ngenxa yalokhu. Ukulimala kweCatalyst kungenzeka uma izimo ezinomthelela ekuphikeleni kwekhodi zingalungiswa ngesikhathi esifanele.

Yiziphi ezinye zezimpawu zekhodi?

Izimpawu zekhodi yenkinga ye-P20BD zingafaka:

• Ukunciphisa ukusebenza kwenjini
• Intuthu emnyama eyeqile ephuma ekuqothulweni kwezimoto
• Ukwehla kwamandla kaphethiloli
• Amanye amakhodi ahlobene ne-SCR

Yiziphi ezinye zezimbangela ezivamile zekhodi?

Izizathu zale khodi zingabandakanya:

• Isifudumezi esinciphile
• Isifunda esivulekile noma esifushane kusifunda esilawula i-ejenti yokulawula isifudumezi
• Ukunciphisa inzwa yokushisa kwe-ejenti kunesici
• Isilawuli se-SCR / PCM esingalungile noma iphutha lohlelo

Yiziphi ezinye izinyathelo zokuxazulula inkinga nge-P20BD?

Uzodinga ukufinyelela kwisithwebuli sokuxilonga, i-digital volt / ohmmeter (i-DVOM), kanye nomthombo wolwazi oqondene nemoto wokuxilonga ukuthola ikhodi ye-P20BD.

Uma ungathola i-Technical Service Bulletin (TSB) ehambelana nonyaka wokwenza, yenza nemodeli yemoto; kanye nokufuduswa kwenjini, ikhodi / amakhodi agciniwe kanye nezimpawu ezitholakele, kunganikeza imininingwane ewusizo yokuxilonga.

Kufanele uqale ukuxilonga ngokuhlola ngokubonakalayo ama-harnesses kanye nezixhumi zohlelo lwe-heater olunciphisayo. Izintambo ezishisiwe noma ezilimele kanye / noma izixhumi kufanele zilungiswe noma zifakwe esikhundleni ngaphambi kokuqhubeka.

Bese uxhuma isithwebuli kusokhethi yokuxilonga imoto bese ubuyisa wonke amakhodi agciniwe kanye nemininingwane yoqweqwe oluhambisanayo. Bhala lolu lwazi ngaphambi kokusula amakhodi bese uhlola ukushayela imoto kuze kube yilapho i-PCM ingena kumodi elungele noma ikhodi isethwe kabusha.

Ikhodi iphakathi futhi ingaba nzima kakhulu ukuxilonga (njengamanje) uma i-PCM ingena kumodi elungele. Kulokhu, izimo ezibe nomthelela ekugcineni ikhodi zingadinga ukuba zimbi kakhulu ngaphambi kokuba kutholakale ukuxilongwa okunembile.

Uma ikhodi isethwa kabusha, sesha umthombo wolwazi lwemoto yakho ukuthola imidwebo yama-diagnostic block, ama-pinouts wokuxhuma, ukubukwa kobuso bokuxhuma, nezinqubo zokuhlolwa kwengxenye nezinto ezithile. Uzodinga lolu lwazi ukuqedela isinyathelo esilandelayo ekuhlolweni kwakho.

Sebenzisa i-DVOM ukuhlola ukunikezwa kwamandla kohlelo lwe-SCR / control. Hlola amafyuzi ngesifunda esilayishiwe ukuze ugweme ukuxilongwa okungafanele. Uma kutholakala amandla afanele (amandla webhethri) namasekethe angaphansi komhlaba, sebenzisa isithwebuli ukwenza kusebenze ama-heater / s anciphise futhi uhlole amandla okukhipha wesekethe yokulawula. Uma i-voltage inganele, sola ukuthi isilawuli sinesici noma sinephutha lohlelo.

Uma isekethe lamandla okukhipha lingaphakathi kokucacisiwe, sebenzisa i-DVOM ukuhlola okokunciphisa i-ejenti yokushisa into okukhulunywa ngayo. Uma i-heater ingahlangabezani nezincazelo zomkhiqizi, kusolwa ukuthi yehlulekile.

• Uma le khodi ivezwa esimweni sezulu esifudumele, sola ukuthi kwenzeke iphutha lohlelo.

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Udinga usizo olwengeziwe ngekhodi yakho ye-P20BD?

Uma usadinga usizo nge-DTC P20BD, thumela umbuzo kumazwana angezansi kwalesi sihloko.

QAPHELA. Lolu lwazi lunikezwa ngenhloso yokwaziswa kuphela. Akuhloselwe ukuthi isetshenziswe njengesincomo sokulungisa futhi asinacala nganoma yisiphi isenzo osithathayo kunoma iyiphi imoto. Yonke imininingwane ekulesi siza ivikelwe yi-copyright.