I-P0078 B1 Isilawuli Sokulawula I-Solenoid Valve Circuit

I-P0078 B1 Isilawuli Sokulawula I-Solenoid Valve Circuit

Idatha ye-OBD-II DTC

Exhaust Valve Control Solenoid Circuit (Ibhange 1)

Kusho ukuthini lokhu?

Le khodi yikhodi ejwayelekile ye-powertrain ye-OBD-II, okusho ukuthi isebenza kukho konke ukwenziwa namamodeli ezimoto (1996 nangaphezulu), yize izinyathelo ezithile zokulungisa zingahluka ngokuya ngemodeli.

Ezimotweni ezihlonyiswe nge-variable valve timing (VVT) system, imodyuli yokulawula injini / i-powertrain control module (ECM / PCM) iqapha indawo ye-camshaft ngokulungisa ileveli kawoyela wenjini ne-camshaft position control solenoid. I-solenoid yokulawula ilawulwa yisiginali ye-pulse wide modulated (PWM) evela ku-ECM / PCM. I-ECM / PCM ibheka lesi siginali futhi uma i-voltage ingaphandle kokucaciswa noma ingazinzile, ibeka le DTC bese ivula ilambu le-Check Engine Light / Malfunction Indicator (CEL / MIL).

I-Bank 1 ibhekisela ohlangothini lwesilinda #1 lwenjini - qiniseka ukuthi uhlola ngokuya ngemininingwane yomkhiqizi. I-solenoid yokulawula i-valve exhaust ngokuvamile itholakala ohlangothini lwe-exhaust oluningi lwekhanda lesilinda. Le khodi ifana namakhodi P0079 kanye ne-P0080. Le khodi ingase futhi ihambisane ne-P0027.

izimpawu

Izimpawu zingafaka:

• Hlola i-Engine Light (Lamp Indicator Indicator) ivuliwe
• Imoto ingahlupheka ngokusheshisa okuncane nokuncipha kokusetshenziswa kukaphethiloli.

Izizathu ezingenzeka

Izimbangela ezingaba khona ze-DTC P0078 zingafaka:

• Ukuxhuma okuxhunywe kabi kwezintambo noma amatheminali agqekiwe
• Iphutha le-solenoid yokulawula
• Isifunda esifushane sisebenzisa amandla
• Isifunda esifushane ukuya phansi
• I-ECM enamaphutha

Izinyathelo zokuxilonga

Ukuboshelwa Kwezintambo - Hlola ukuxega kwezintambo zokubopha izintambo, bheka ukugqwala noma izintambo ezixegayo ezixhunyweni. Nqamula izixhumi zamahanisi ku-solenoid ne-PCM usebenzisa umdwebo wezintambo, thola izintambo ezithi + kanye - ku-solenoid. I-solenoid ingaqhutshwa kusukela ohlangothini oluphansi noma ohlangothini lwamandla, kuye ngokuthi isicelo. Bheka imidwebo yezintambo zasembonini ukuze unqume ukugeleza kwamandla kusekethe. Usebenzisa i-digital volt/ohmmeter (DVOM) esethwe kusilungiselelo se-Ohm, hlola ukumelana phakathi kokuphela kwentambo ngayinye. Ukweqa umkhawulo ku-DVOM kungase kube indawo evulekile kuzintambo, ekuxhumekeni okuxekethile, noma kutheminali. Ukumelana kufanele kube cishe ku-1 ohm noma ngaphansi, uma ukumelana kuphezulu kakhulu, kungase kube nokugqwala noma izintambo ezimbi phakathi kwe-solenoid ne-PCM/ECM.

Lawula i-Solenoid - Uma ihhanisi likagesi linqanyuliwe ku-solenoid, kusetshenziswa i-DVOM esethelwe ku-ohms, hlola ukumelana phakathi kwetheminali ngayinye kagesi ku-solenoid yokulawula ngokwayo. Sebenzisa ukucaciswa kwefekthri noma i-solenoid yokulawula okuhle, uma itholakala, ukuze unqume ukuthi ingabe kukhona ukumelana okudlulele ku-solenoid. Uma kunokungaphezu komkhawulo noma ukumelana ngokweqile ku-DVOM, i-solenoid cishe yimbi. Hlola okufushane ukuya phansi ku-solenoid yokulawula ngokuxhuma umkhondo owodwa we-DVOM endaweni enhle eyaziwayo kanye nomunye kutheminali ngayinye ku-solenoid yokulawula. Uma ukumelana kukhona, i-solenoid ingase ibe nesifunda esifushane sangaphakathi.

Kufushane emandleni - Nqamula ihhanisi ku-PCM/ECM bese ubeka izintambo ku-solenoid yokulawula. Nge-DVOM esethelwe ku-volts, xhuma umthofi onegethivu phansi kanye nomthofu ophozithivu kuzintambo ku-solenoid yokulawula. Hlola i-voltage, uma ikhona, kungase kube khona amandla amafushane kumahhanisi ezintambo. Thola amandla amafushane ngokukhipha izixhumi zehhanisi futhi uhlole izintambo zibuyele ku-solenoid.

Kufushane ukuya phansi - Nqamula ihhanisi ku-PCM/ECM bese ubeka izintambo ku-solenoid yokulawula. Nge-DVOM esethelwe ku-volts, xhuma umkhondo ophozithivu kumthombo wamandla kagesi omuhle owaziwayo, njengebhethri, kanye nokuholela okunegethivu kuzintambo ku-solenoid yokulawula. Hlola i-voltage, uma ikhona, kungase kube khona okufushane phansi kwehhanisi lezintambo. Thola okufushane kuya phansi ngokukhipha izixhumi zamahanisi futhi uhlole izintambo zibuyele ku-solenoid. Hlola okufushane ukuya phansi ngokusebenzisa i-solenoid yokulawula ngokuxhuma umkhondo owodwa we-DVOM endaweni enhle eyaziwayo kanye nomunye kutheminali ngayinye ku-solenoid yokulawula. Uma ukumelana kuphansi, i-solenoid ingase ibe mfushane ngaphakathi.

I-PCM/ECM - Uma zonke izintambo nokulawula i-solenoid KULUNGILE, kuzodingeka ukuthi kuqashwe i-solenoid ngenkathi injini isebenza ngokubheka izintambo eziya ku-PCM/ECM. Usebenzisa ithuluzi lokuskena elithuthukisiwe elifunda imisebenzi yenjini, qapha umjikelezo womsebenzi osethwe i-solenoid yokulawula. Kuzodingeka ukulawula i-solenoid ngenkathi injini isebenza ngesivinini senjini ehlukahlukene kanye nemithwalo. Usebenzisa i-oscilloscope noma i-graphical multimeter esethelwe kumjikelezo womsebenzi, xhuma intambo enegethivu endaweni enhle eyaziwayo kanye nentambo ephozithivu kunoma iyiphi itheminali yocingo ku-solenoid ngokwayo. Ukufundwa kwamamitha amaningi kufanele kufane nomjikelezo womsebenzi oshiwo kuthuluzi lokuskena. Uma ziphambene, i-polarity ingase ihlehliswe - xhuma intambo ephozithivu ngakolunye uhlangothi lwentambo ku-solenoid bese uphinda ukuhlolwa ukuze uhlole. Uma ingekho isignali etholakala ku-PCM, i-PCM ngokwayo ingase ibe nephutha.

Izingxoxo ezihlobene ze-DTC

• P0014 / p0078Isikhathi sokulawula seCamshaft i-solenoid valve B1. Exhaust Valve Control Solenoid Circuit Block 1. Ngishintshe i-solenoid ngafaka entsha, kepha nginezingu-2 zazo, ngakho-ke angazi ukuthi ngenze okungalungile yini. Ngafunda ukuthi kungaba ihhanisi lezintambo. Angazi ukuthi ngenzeni ngalesi sikhathi…. 
• I-Nissa Versa 2013 - I-Exhaust Solenoid - Ikhodi Yephutha P0078Sanibonani senkundla, Unyaka Omusha Ojabulisayo ..! Ngidinga usizo lokuthola inzwa ye-exhaust gas solenoid VVT kuNissan Versa Sedan SV ka-2013. Unjiniyela wami akasebenzi kahle, akasheshi futhi ngidinga ukusheshisa okuningi ukuze ngifinyelele ijubane lami, kanye nokusebenza kabi kwephethiloli. Igiya alishintshi nakancane ... 

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