U0294 Ukuxhumana okulahlekile ngemodyuli yokulawula ukudluliswa

U0294 Ukuxhumana okulahlekile ngemodyuli yokulawula ukudluliswa

Idatha ye-OBD-II DTC

Ukuxhumana Okulahlekile Ngemojula Yokulawula Ukudlulisa

Kusho ukuthini lokhu?

Le yikhodi yenkinga yokuxilongwa yohlelo lokuxhumana ejwayelekile esebenza kokuningi nokwenziwa kwezimoto ze-OBD-II.

Le khodi isho ukuthi i-Powertrain Control Monitor Module (PCMM) namanye amamojula okulawula emotweni awaxhumani. Umjikelezo osetshenziswa kakhulu ekuxhumaneni waziwa ngokuthi i-Controller Area Bus communication, noma ibhasi le-CAN.

Amamojula axhumana nomunye ngenethiwekhi, njengenethiwekhi onayo ekhaya noma emsebenzini. Abakhiqizi bezimoto basebenzisa amasistimu amanethiwekhi amaningi. Kuze kube unyaka we-2004, izindlela zokuxhumana phakathi kwemodyuli ezivame kakhulu (ezingaphelelisi) kwakuyi-serial interface, noma i-SCI; I-SAE J1850 noma ibhasi le-PCI; kanye neChrysler Collision Detection, noma i-CCD. Uhlelo olujwayeleke kakhulu olusetshenziswe ngemuva kuka-2004 lwaziwa njenge-Controller Area Network ukuxhumana, noma umane ibhasi le-CAN (futhi elisetshenziswe kuze kube ngu-2004 engxenyeni encane yezimoto). Ngaphandle kwale bhasi le-CAN, amamojula wokulawula awakwazi ukuxhumana futhi ithuluzi lakho lokuskena lingathola noma lingatholi ulwazi oluvela emotweni, kuya ngokuthi isiphi isifunda esithintekile.

I-Powertrain Control Monitor Module (PCMM) ivamise ukuba ngaphansi kwe-hood ezinhlangothini zombili zemoto. Ithola okokufaka okuvela ezinhlobonhlobo zezinzwa, ezinye zazo ezixhunywe kuyo ngokuqondile, futhi eziningi zithunyelwa ngohlelo lokuxhumana lwebhasi lusuka kumojula yokulawula i-powertrain (PCM). Lokhu okokufaka kuvumela imojula ukuthi ilawule ukulethwa kukaphethiloli kanye nesikhathi sokushiswa kwenjini.

Izinyathelo zokuxazulula inkinga zingahluka ngokuya ngomenzi, uhlobo lohlelo lokuxhumana, inani lezintambo, nemibala yezintambo ezisohlelweni lokuxhumana.

Ukuqina kwekhodi nezimpawu

Ubukhulu kuleli cala ngokuvamile buphakeme kakhulu, kuye ngokuthi inkinga ikuphi. Umkhiqizi anganikeza isixazululo uma kwenzeka iphutha lebhasi. Ukusebenza kwemoto kuthintwa ukuntuleka kokusebenza kwe-PCMM.

Izimpawu zekhodi ye-U0294 zingafaka:

• Isibani sesibonisi esingasebenzi kahle sivuliwe
• Imoto kungenzeka inyakaze / ngeke iqale
• Injini ingase ingajiki nhlobo

izizathu

Imvamisa isizathu sokufaka le khodi sithi:

• Vula ku-CAN ibhasi + noma - isekethe
• Mfushane kuya emhlabathini noma emhlabathini kunoma yisiphi isifunda sebhasi le-CAN
• Awekho amandla noma indawo ye-PCMM
• Akuvamile - imojula yokulawula inephutha

Izinqubo zokuxilonga nokulungisa

Indawo enhle ukuqala KONKE ukuxilongwa ngogesi ukuhlola i-Technical Service Bulletins (TSB) yemoto yakho. Inkinga obhekene nayo ingase yaziwe ngabanye emkhakheni. Ukulungiswa okwaziwayo kungenzeka kukhishwe ngumkhiqizi futhi kungakongela isikhathi nemali ngesikhathi sokuxilongwa.

Kucatshangwa ukuthi umfundi wekhodi uyatholakala kuwe njengamanje, njengoba kungenzeka ukuthi ukwazile ukufinyelela amakhodi kuze kube manje. Bona ukuthi akhona yini amanye ama-DTC ahlobene nokuxhumana kwebhasi noma ibhethri / ukuthungela. Uma kunjalo, kufanele uwahlolisise kuqala, njengoba i-misdiagnosis yaziwa ukuthi iyenzeka uma uthola ikhodi ye-U0294 ngaphambi kokuthi noma yimaphi amakhodi ayisisekelo ahlolwe kahle futhi alungiswe.

Uma okuwukuphela kwekhodi oyithola kwamanye amamojula ingu-U0294, zama ukufinyelela i-PCMM. Uma ukwazi ukufinyelela amakhodi avela ku-PCMM, khona-ke ikhodi ethi U0294 iyikhodi yesikhashana noma yememori. Uma i-PCMM ingafinyeleleki, faka ikhodi ethi U0294 amanye amamojula ayasethwayo iyasebenza futhi inkinga isivele ikhona.

Ukwehluleka okuvame kakhulu ukwehluleka kwesekethe okuholela ekulahlekelweni kwamandla noma phansi kumojula yokulawula ukudlulisa.

Hlola wonke amafusi anikezela nge-PCMM kule moto. Hlola zonke izizathu ze-PKMM. Thola izindawo okubambelela kuzo phansi emotweni futhi uqinisekise ukuthi lezi zixhumanisi zihlanzekile futhi zivikelekile. Uma kunesidingo, zisuse, thatha ibhulashi elincane le-bristle ne-baking soda / isisombululo samanzi bese uhlanza ngayinye, kokubili isixhumi nendawo lapho ixhuma khona.

Uma kukhona ukulungiswa okwenziwe, sula ama-DTC kunoma imaphi amamojula asetha ikhodi kumemori futhi ubone ukuthi ungakwazi yini ukuxhumana ne-PCMM. Uma ukuxhumana ne-PCMM kuyalulama, inkinga kungenzeka kakhulu ngamafuse/ukuxhumana.

Uma ikhodi ibuya noma ukuxhumana nemojula kungakaqiniseki, thola ukuxhumana kwebhasi le-CAN emotweni yakho, okubaluleke kakhulu isixhumi se-PCMM, esivame ukutholakala ngaphansi kwesivalo nhlangothi zombili zemoto. Nqamula intambo yebhethri enegethivu ngaphambi kokunqamula isixhumi ku-PCMM. Uma isitholiwe, bheka izixhumi nezintambo. Bheka imihuzuko, ama-scuffs, izintambo eziveziwe, izimpawu zokusha, noma ipulasitiki encibilikisiwe.

Nqamula izixhumi futhi uhlole ngokucophelela amatheminali (izingxenye zensimbi) ngaphakathi kwezixhumi. Bona ukuthi zibukeka zishisiwe noma zinombala oluhlaza okhombisa ukugqwala. Uma udinga ukuhlanza ama-terminals, sebenzisa i-electric contact cleaner kanye ne-plastic bristle brush. Vumela ukomisa nokufaka igrisi kagesi lapho amatheminali ethinta khona.

Yenza lokhu kuhlola okumbalwa kagesi ngaphambi kokuxhuma izixhumi emuva ku-PCMM. Uzodinga ukufinyelela ku-digital volt/ohmmeter (DVOM). Qiniseka ukuthi i-PCMM inamandla kanye nomhlabathi. Finyelela kumdwebo wezintambo bese unquma ukuthi amandla amakhulu nezinto ezisetshenziswa emhlabathini zingena kuphi ku-PCMM. Xhuma kabusha ibhethri ngaphambi kokuqhubeka ne-PCMM isavaliwe. Xhuma intambo ebomvu ye-voltmeter ku-B+ ngayinye (i-voltage yebhethri) efakwe kusixhumi se-PCMM, kanye nomthofu omnyama we-voltmeter endaweni enhle (uma ungaqiniseki, i-negative yebhethri isebenza njalo). Kufanele ubone ukufundwa kwe-voltage yebhethri. Qiniseka ukuthi unesizathu esihle. Xhuma umthofu obomvu we-voltmeter kuphozithivu yebhethri (B+) kanye nomthofu omnyama kusekethe ngayinye yaphansi. Nakulokhu futhi, kufanele ubone i-voltage yebhethri njalo uma uxhuma. Uma kungenjalo, lungisa amandla noma isekethe yaphansi.

Bese uhlola izifunda ezimbili zokuxhumana. Thola i-CAN C+ (noma i-HSCAN+) kanye ne-CAN C- (noma i-HSCAN - isekethe). Ngentambo emnyama ye-voltmeter exhunywe endaweni ekahle, xhuma intambo ebomvu ku-CAN C+. Uma ukhiye uvuliwe futhi injini icishiwe, kufanele ubone cishe ama-volts angu-2.6 anokuguquguquka okuncane. Bese uxhuma intambo ebomvu ye-voltmeter kusekethe ye-CAN C-. Kufanele ubone cishe ama-volts angu-2.4 ngokuguquguquka okuncane. Abanye abakhiqizi bakhombisa i-CAN C- cishe i-5V kanye nokhiye ozungezayo lapho injini icishiwe. Hlola imininingwane yomkhiqizi wakho.

Uma zonke izivivinyo zidlula futhi ukuxhumana kungenakwenzeka, noma awukwazanga ukusula i-DTC U0294, into kuphela engenziwa ukufuna usizo kuchwepheshe oqeqeshiwe wezimoto, njengoba lokhu kuzobonisa ukwehluleka kwe-PCMM. Iningi lalawa ma-PCMM kufanele ahlelwe noma alinganiswe ukuze kufakwe kahle imoto.

Izingxoxo ezihlobene ze-DTC

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Udinga usizo olwengeziwe ngekhodi ye-U0294?

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