Ntawm no yog cov txheej txheem tshuaj ntsuam xyuas siv tau los ntawm ob tus tswv lub tshuab thiab cov kws kho cov kws kho mob, tso cai rau kev ntsuam xyuas ntxhib - tsis muaj cov cuab yeej tshaj lij - ntawm seb lub tshuab hluav taws xob tswj hluav taws xob (ECU) puas tuaj yeem kho lossis yuav tsum tau hloov.
I. Thawj Txoj Cai Tawm Tsis-ECU Faults
Ntau cov tsos mob zoo li ECU tsis ua haujlwm yog qhov teeb meem sab nraud. Ua cov tshev no ua ntej:
Puas yog lub roj teeb voltage zoo li qub?
Yog tias qhov hluav taws xob poob qis dua 21V thaum pib, ECU tuaj yeem ua rau lub tswb tsis raug, tsis pib, lossis kaw lub cav.
Puas yog lub ntsiab relay lossis fuses tshuab?
Lub zog tsis ruaj khov rau ECU yog qhov teeb meem ntau tshaj plaws.
Cov connectors puas dej puas, corroded, los yog xoob?
Unplug lawv thiab xyuas cov dej noo lossis ntsuab tooj liab oxidation.
Puas yog cov sensors luv luv?
Lub voj voog luv luv hauv RPM, lub siab, lossis lub ntsuas hluav taws xob tuaj yeem rub tawm ECU lub zog 5V, ua rau lub tswb nrov thiab nres.
Yog tias cov khoom siv hluav taws xob, xaim, thiab cov sensors zoo li qub tab sis ECU tseem ua haujlwm tsis zoo → ECU nws tus kheej yog qhov tsis zoo.
II. Cov tsos mob no yuav luag paub meej tias ECU ua tsis tiav
Saib xyuas lub vijtsam dub, tsis muaj kev sib txuas lus, tsis muaj lus teb
Lub hwj chim yog qhov qub tab sis cov zaub yog tag nrho los yog qhia tias "ECU Tsis Txuas".
Fais fab rau tab sis cav tsis pib
Muaj zog txaus, roj, thiab compression, tab sis lub oob khab cranks tsis pib.
Cov lej ua txhaum tsis tu ncua uas tsis tuaj yeem tshem tawm
Xws li Komatsu CA187, Kab ntsig 1289, Kobelco P1/P2; cov lis dej num rov tshwm sim tam sim tom qab tshem tawm.
5V sensor fais fab shorted rau hauv av
luv Circuit Court tseem nyob txawm tias tom qab disconnecting tag nrho cov sensors → Internal ECU hwj chim nti yog burnt.
Kev ua haujlwm tsis zoo, tsis siv neeg stalling, erratic txav
Random stalling, tsis siv neeg boom lifting, tsis siv neeg thoob retraction; Tom qab txiav txim tawm cov teeb meem hydraulic, ECU ua txhaum.
Pom pom kev puas tsuaj
Pom tseeb dej ingress, hlawv, bulging Cheebtsam, los yog burnt tsw → feem ntau tsis kho, hloov ncaj qha.
III. Kev txiav txim tseem ceeb: Kho tau vs. Yuav tsum Hloov
- Repairable (Tsis xav tau hloov)
Tsuas yog cov chips fais fab, tsav tsheb transistors, lossis kev sib txuas lus chips raug hlawv
Dej puas tab sis CPU tsis zoo
Fais fab thiab sib txuas lus ib txwm, tsuas yog ib feem ua haujlwm tsis ua haujlwm
Txhim kho cov lej tsis raug tab sis kev nkag mus siv tau muaj
Tus nqi kho ib txwm: ntau pua txog 2,000 RMB - Yuav tsum Hloov (Unrepairable)
Hlawv CPU / lub ntsiab nti (qhov feem ntau "terminal txhaum")
Hlawv-los ntawm Circuit Court board, tawg tooj liab kab, nws kim heev corrosion
Kev puas tsuaj dej loj nrog cov khoom oxidized tag nrho
ECU xauv los yog VIN-kho nrog tsis muaj kev daws teeb meem
Cov qauv tsis siv ECU txiav tawm, tsis muaj cov chips hloov pauv
IV. Simplest Quick Diagnostic Flow (Rau cov tswv tshuab)
Xyuas cov roj teeb, fuses, thiab connectors
Disconnect tag nrho cov sensors thiab saib seb puas ploj lawm
Yog tias muaj teeb meem tshwm sim → ECU puas lawm
Qhib ECU los tshuaj xyuas cov dej puas los yog hlawv cov cim
Kev ntsuam xyuas lub khw:
Kho tau → pib kho
Unrepairable / kho cov lus nyob ze tus nqi ntawm chav tsev tshiab → hloov ncaj qha
V. Thaum twg los hloov nrog ECU tshiab yam tsis muaj kev ntxhov siab
Lub excavator yog koj lub tshuab ua haujlwm tseem ceeb, nrog kev poob qis txhua hnub
ECU tau ua tsis tiav ntau zaus tom qab kho ntau yam
Kho cov lus tshaj tawm tshaj ib nrab ntawm tus nqi ntawm ECU tshiab
Muaj kev pheej hmoo siab nrog ECUs siv, ntshai ntawm kev yuav khoom kaw
