P204C Low rate na rage wakili matsa lamba firikwensin kewaye

P204C Low rate na rage wakili matsa lamba firikwensin kewaye

Bayanan Bayani na OBD-II

Rage Ƙarfin Sensor Circuit Low

Mene ne wannan yake nufi?

Wannan Lambar Matsalar Bincike (DTC) lambar watsawa ce gabaɗaya kuma ta shafi yawancin motocin OBD-II (1996 da sabuwa). Wannan na iya haɗawa, amma ba'a iyakance shi ba, motoci daga Dodge, Ram, VW, Audi, GMC, BMW, Mercedes-Benz, Ford, Chevrolet, da dai sauransu Kodayake matakan gyara na gaba ɗaya na iya bambanta dangane da shekarar ƙirar, yi, ƙirar da watsawa. sanyi.

Lambar da aka adana P204C tana nufin tsarin sarrafa wutar lantarki (PCM) ya gano ƙarancin isasshen ƙarfin lantarki a cikin maɓallin firikwensin matsa lamba. Ana nuna wannan lambar ta musamman akan motoci tare da injin dizal mai tsabta.

Tsarin mai haɓakawa yana da alhakin rage (galibi) duk iskar da ke fitarwa, kodayake wasu aikace -aikacen kuma suna sanye da tarkon NOx.

Tsarin sake dawo da iskar Gas (EGR) ya ɗauki wani mataki na rage fitar da hayaƙi na NOx. Koyaya, manyan injunan diesel na yau ba za su iya cika ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙawancen tarayya (US) tare da kawai EGR, DPF / catalytic converter, da NOx trap. A saboda wannan dalili, an ƙirƙiri tsarin rage yawan kuzari (SCR).

Tsarin SCR suna allurar tsarin ragewa ko Diesel Exhaust Fluid (DEF) a cikin iskar gas ɗin da ke saman matattara mai rarrafe, tarkon NOx da / ko mai jujjuyawa ta hanyar bawul ɗin allurar ragewa (solenoid). Allurar da aka lissafa daidai DEF tana ɗaga zafin zafin abun tace kuma tana ba shi damar yin aiki da inganci. Yana ƙara tsawon rayuwar sabis na abubuwan tacewa kuma yana taimakawa rage fitar da gurɓatattun iskar gas mai haɗari zuwa cikin yanayi. Duk tsarin SCR ana sarrafawa da sa ido ta ko dai PCM ko mai tsayawa kai tsaye (wanda ke hulɗa da PCM). A kowane hali, mai kulawa yana lura da O2, NOx da firikwensin zafin zafin gas (gami da sauran abubuwan shiga) don ƙayyade lokacin da ya dace don allurar DEF (rage). Ana buƙatar allurar DEF madaidaiciya don kiyaye zafin iskar gas a cikin abubuwan da aka yarda da su da kuma inganta tacewar gurɓatattun abubuwa.

Ana amfani da famfon ragewa / sabuntawa don matsawa DEF a cikin tsarin rage ruwa don amfani lokacin da ake buƙata. PCM tana lura da ƙarfin wutan lantarki na samar da wutar lantarki don ci gaba da canjin yanayi. PCM kuma yana lura da firikwensin matsa lamba ɗaya ko fiye a cikin tsarin samar da ragewa don sanin ko akwai ɓarna a cikin tsarin.

Idan PCM ta gano matakin ƙarfin lantarki a cikin kewayon firikwensin zafin jiki wanda ke ƙasa da sigogi masu karɓa, za a adana lambar P204C kuma fitilar mai nuna rashin aiki (MIL) na iya haskakawa. MIL na iya buƙatar hawan wuta mai yawa (tare da gazawa) don haskakawa.

Misalin tanki don rage wakili DEF:

Menene tsananin wannan DTC?

Lambar P204C da aka adana ya kamata a kula da shi da mahimmanci kuma a gyara shi da wuri -wuri. Ana iya kashe tsarin SCR saboda wannan. Lalacewar mai haɓakawa na iya faruwa idan ba a gyara yanayin da ya taimaka ga dorewar lambar ba a kan kari.

Menene wasu alamomin lambar?

Alamomin lambar matsala P204C na iya haɗawa da:

• Rage ingancin mai
• Bakin hayaƙi mai yawa daga shaye -shayen abin hawa
• Rage aikin injiniya
• Sauran lambobin da suka shafi SCR

Mene ne wasu abubuwan da ke haifar da lambar?

Dalilan wannan lambar na iya haɗawa da:

• Rage firikwensin matsin lamba na m
• Buɗewa ko gajere kewaye a cikin da'irar a cikin tsarin firikwensin matsa lamba
• Bad SCR / PCM mai sarrafawa ko kuskuren shirye -shirye

Menene wasu matakai don warware matsalar P204C?

Don tantance lambar P204C, zaku buƙaci na'urar binciken cuta, volt / ohmmeter na dijital (DVOM), da kuma tushen bayanan takamaiman abin hawa.

Kuna iya amfani da tushen bayanan abin hawan ku don nemo Bulletin Sabis na Fasaha (TSB) wanda ya dace da shekarar abin hawan ku, ƙira da ƙira; kazalika da ƙaurawar injin, lambobin da aka adana da alamomin da aka gano. Idan kun same shi, yana iya ba da bayanan bincike masu amfani.

Yi amfani da na'urar daukar hotan takardu (wanda aka haɗa da soket ɗin abin hawa na abin hawa) don dawo da duk lambobin da aka adana da kuma bayanan daskarar da aka haɗa. Ana ba da shawarar ku rubuta wannan bayanin kafin share lambobin sannan ku gwada fitar da abin hawa har sai PCM ta shiga yanayin shirye ko an share lambar.

Idan PCM ya shiga yanayin shirye a wannan lokacin, lambar ba ta wuce -wuri kuma tana iya zama da wahalar ganewa. A wannan yanayin, yanayin da ya ba da gudummawa ga riƙe da lambar na iya buƙatar ƙara tsanantawa kafin a iya yin cikakken bincike.

Idan an sake saita lambar nan da nan, mataki na bincike na gaba zai buƙaci ku bincika tushen bayanan abin hawan ku don zane -zanen shinge na bincike, pinouts, fuskokin haɗin haɗi, da hanyoyin gwajin abubuwan / ƙayyadaddun abubuwa.

Mataki 1

Yi amfani da DVOM don gwada firikwensin matsin lamba gwargwadon ƙayyadaddun masana'anta. Abubuwan da ba su wuce gwajin ba a cikin mafi girman sigogi masu izini ya kamata a ɗauka marasa lahani.

Mataki 2

Idan ainihin matsin lamba a cikin tsarin ragewa yana cikin ƙayyadaddun bayanai, ana adana lambar P204C kuma mai jujjuyawar da ake tambaya yana aiki, yi amfani da DVOM don gwada shigarwar da fitowar da'irori tsakanin mai canza matsin lamba da mai sarrafa PCM / SCR. Cire duk masu sarrafawa kafin amfani da DVOM don gwaji.

• Lambobin firikwensin matsa lamba masu raguwa galibi ana sanya su ne zuwa famfon tsarin ragewa wanda ke zubowa a ciki, amma kammala binciken.

Tattaunawar DTC mai dangantaka

• A halin yanzu babu batutuwa masu alaƙa a cikin dandalin mu. Sanya sabon taken akan dandalin yanzu.

Kuna buƙatar ƙarin taimako tare da lambar P204C?

Idan har yanzu kuna buƙatar taimako tare da DTC P204C, aika tambaya a cikin sharhin da ke ƙasa wannan labarin.

NOTE. An ba da wannan bayanin don dalilai na bayanai kawai. Ba a yi nufin amfani da shi azaman shawarar gyara ba kuma ba mu da alhakin duk wani mataki da za ku ɗauka a kan kowane abin hawa. Duk bayanan da ke wannan shafin ana kiyaye su ta haƙƙin mallaka.