Yaya za a sani kuskuren tashin gaba?

Yaya za a sani kuskuren tashin gaba?

Kuskuren tashin throttle body ba su zama kuskuren tashin daidai wanda ya nuna kuskuren tashin daidai ba. Amma ECU ya rubuta kuskuren tashin daidai na kuskuren tashin daidai na commanded da actual throttle position, torque reduction requests, da kadan lokaci kuskuren tashin daidai na mass airflow ko oxygen sensor wanda suka zama kuskuren tashin daidai na kuskuren tashin daidai na air metering. Gani na kuskuren tashin daidai wanda ya fara daga throttle body, ECU, wiring, da sensor systems zai sa mu bai abu daidai wanda ya yi aiki.

Shirya na farko: Ku karanta kuskuren tashin, amma kada ku biyayi su tare da kuskuren tashin

Kodun da aka saba kamar yadda ya zama mafi kyawawan kuma ya daga cikin throttle body su ne: P0121 (throttle position sensor A circuit range/performance), P0122 (low input), P0123 (high input), P0221 (sensor B range/performance), da P0638 (throttle actuator control range/performance). Wadannan kodun sun nuna wani masu magana a tsakanin throttle position da aka amfani da shi da wanda aka bayyana—ba su nuna cewa throttle body ne wanda ke bawa alalubata.

A gaba daya da kula da throttle body, ku duba freeze frame data wanda aka sa a cikin kodun. Idan kodun ya faru a idle lokacin da yadda na engine ya kashe 85°C kuma throttle position da aka bayyana ya kashe 18% idan ya kamata ya kashe 3–5%, to throttle plate ya taka a karami—wani alalubata na mechanical wanda data ta nuna. Idan kodun ya faru a highway speed lokacin da throttle position da aka bayyana ya canza daga 35% zuwa 0% kuma zuwa 40% a cikin 0.5 seconds, to alalubata zai kashe electrical—wani sensor da yake kara kuzo ko wani wiring connection da yake kara kuzo.

Step Two: Live Data Analysis

Kawo scan tool wanda yana iya graphing live data kuma duba throttle position sensor voltage don ya kashe ignition (engine baya). Kusa kuma kusa accelerator pedal daga 0% zuwa 100% kuma zuwa cikin. Sensor A voltage yana kamata ya taka da kyau daga ~0.5V a closed throttle zuwa ~4.5V a wide open. Sensor B yana amfani da inverse curve—yana faru da high kuma yana gudan—don redundant check. Wani sudden voltage dropout, flat spot inda voltage yana tsoro a canza ga yanzu 0.5 seconds, ko disagreement na sensor A da B wanda ya fi 0.1V yana nuna throttle body mai siffa.

Kudin yadda throttle actuator ya sake kuma yana nuna wani bayani. A lokacin da engine ya shiga, throttle motor yana kare plate a wurin da aka amfani da shi ta hanyar sautin kadan da yawa wajen spring na daga cikin, wanda ke kare shi a lokacin idle. Kudin idle na normal shine 0.3–0.8 amps. Throttle body da carbon buildup yana bukatar kudin mai yawa—1.0–1.8 amps—saboda motor yana aiki wajen tsawon fahimta. Kudin mai yawa da yawa ne ga 2.0 amps a lokacin idle yana nuna cewa motor yana cikin kariya na kariya kuma throttle body zai bukatar kare ko karewa.

Tsarin Uku: Inspeksiyon na Alama da Mekanikal

Cire madaidai na kaza da gano shafin na throttle da kaza ta hanyar tashin da flashlight. Kullumai na carbon suna gaba daya a baya na shafin na throttle da kaza ta kaza ta farko da ke baya ta, inda gas na crankcase ventilation suka shiga a cikin kaza ta hanyar tashin. Kullumai na light tan da suka kawo wani ƙaramin 20% na kaza ta kaza, suna yawa a matsayin abu na muhimmanci ga maita da 60,000–100,000 km. Kullumai na black, wet da suka kawo wani ƙaramin 50% na kaza ta kaza, amma kullumai da suka taka shafin na throttle kuma suka tsara ta fuskanta don zama a rukuni na idle gap ta musamman, suna saba ta yin halin yanzu, tare da abin da scan tool ya bayyana.

Tare da ƙonewa kashe, manually tura da gas farantin bude tare da tsabta yatsa. Ya kamata farantin ya motsa ba tare da matsala ba tare da juriya na bazara a duk tsawon tafiyarsa, yana rufewa sosai lokacin da aka saki. Duk wani abu mai ƙyalli, mannewa a kowane wuri a cikin tafiya, ko farantin da ya kasance a buɗe idan an saki shi ya tabbatar da rashin aiki na inji. Kada ka taɓa tilasta buɗe farantin gas a kan injin da ƙonewa yake a cikimotar lantarki tana riƙe da matsayi kuma tilasta shi akan motar motar na iya cire kayan aikin rage filastik.

Mataki na huɗu: Binciken wayoyi da masu haɗawa

Kankara na throttle body ya da 5V na reference voltage, sensor ground, biyu na kwayoyin signal return (sensors A da B), da biyu na kwayoyin motor drive. Ku fiye da kankaran da ignition ya kashe: 5V na reference voltage tsakanin 5V supply pin da ground yana kamata a zama 4.9–5.1V ta daga cikin wani lokaci. Idan 5V na reference voltage ya zama ƙasa da 4.8V ko ya gudan yanzu da ±0.1V, wani abu mai shugaban yake a cikin ECU 5V na reference circuit ko wani short to ground a wani bangaren na reference circuit wanda ya share da accelerator pedal sensor da wani mazaigari na engine sensors.

Ku amfani da continuity testing don tattaunawa kowane kwaya daga throttle body connector zuwa ECU connector, idan kankararun su ke fara da farko da kankara, yana nuna kusurin kwayoyin wiring harness. Idan resistance ya zama ƙasa da 1 ohm a cikin kowane kwaya, wani abu mai shugaban yake a gudan—wanda ke a bend point wanda kwayoyin harness ya gudan a lokacin da engine ya gudan.

Muhimman: Tattaunawa na Erratic Idle Ya save Unnecessary Replacement

Wani Audi da aka kawo shi da P0121 koda da idlen na ya gudan cikin 700 da 1,100 RPM, akwai wani workshop da ya saba shi da ajiye throttle body. A cikin yadda ba abu ne da ya zama mafi kyau don yin ajiye, mutum da ke so ajiye ya yi amfani da tashin yin amfani da kuma ya gano cewa throttle position sensor ya gudan cikin live data, amma voltage na reference a throttle body connector ya gudan cikin 4.7V da 5.1V. Alama na kuskure ta daga wani wire da aka bincika a cikin engine harness, wanda ya kashe cikin 15cm daga throttle body connector. Yadda ajiye na wire da ya biya 30, ya sa kuskure da aka bayar 350 don ajiye na throttle body. Throttle body itse, wanda aka samu daga wani manufacturer na aftermarket kamar Sakes Auto Parts, zai iya aiki amma ba za a bukata su.

Masu Sabon Gaskiya

Shin throttle body mai tsoro zai iya haɗawa da malfunction code?

Ee. Kuma kuma carbon wanda ya sa tashin throttle ya zama babu hanyar ya fito a cikin bayanin idle ya sa ECU ya gano kuma kuma yadda ake amfani da idle da yadda ake amfani da shi. Kuma kuma tashin throttle body yana iya rarraba abin da aka bayani ba tare da kuma kuma aikace aikacen kuma kuma.

Yaya ina iya fahimta farko na kuma kuma sensor da kuma kuma motor na throttle body?

Kuma kuma sensor ta nuna kuma kuma kuma yadda ake amfani da position ba tare da kuma kuma yadda ake amfani da current na motor. Kuma kuma motor ta nuna kuma kuma yadda ake amfani da current da kuma kuma yadda ake amfani da kuma kuma na gear drive. Kuma kuma live data graphing na position da current, a lokacin da suka daga cikin lokaci, suna nuna wane system ce ta zama babu.

Yanzu kuma kuma battery ya sa throttle body adaptation ya daina?

Kusantarwa ga batiri ya kare ta fuskanta gaba daya na 'ECU' wanda ya faru a tsaki. A cikin wasu otu, 'ECU' ta sanya wannan bayani a lokacin da aka tashi otun da baya. A wasu sauran—kamar 'VW/Audi'—ya kamata a amfani da 'scan tool adaptation' bayan kusantarwa ga batiri don samun tsayi mai kyau na 'idle control'.

Yaya yanzu ya kamata a gudanar da 'throttle body inspection'?

Gudanar da 'throttle body' ya kamata a gudanar da shi a kowane lokaci da aka gudanar da 'major service' (30,000–50,000 km) a cikin 'direct-injection engines', wadanda suka yi amfani da 'carbon buildup' sosai. A 'port-injected engines' za a iya rarraba lokacin da ke zama a 60,000–80,000 km.

Shin 'throttle body malfunction' zai iya zama sababbin 'transmission shifting problems'?

Ee. 'Transmission control module' ya amfani da bayanin 'throttle position' don fahimta 'shift points' da 'line pressure'. Bayani mai daga cikin 'throttle position signal' zai iya zama sababbi na 'harsh' ko 'delayed shifts' wadanda suka nuna cewa akwai 'transmission problem', amma suna daga 'throttle body sensor fault'.

Ina zan iya samun 'throttle bodies' da suka dace da amfani?

Sukurun na kwayoyin suka shiga a cikin bazarin da suka yi amfani da kwalitasin OEM kamar Sakes Auto Parts suna ba da throttle bodies wanda aka yi da su a cikin yadda factory ya kawo ga VW, Audi, da sauran aplikashin na Europe. A cikin suku na su ke ciki haɗin da aka bayyana, kuma kuma calibration na sensor da gasket don fitment na direk.