IBhodi yoLawulo loNxibelelwano lwemoto OBD2

IBhodi yoLawulo lwe-OBD2 yoNxibelelwano lwemoto eFakelwe umfanekiso

Inkcazelo emfutshane:

Mhlawumbi sele udibene ne-OBD2:

Ngaba ukhe waqaphela ukukhanya kwesalathisi kwideshibhodi yakho?

Yimoto yakho leyo ekuxelela ukuba kukho ingxaki.Ukuba undwendwela umkhandi, uya kusebenzisa iskena se-OBD2 ukuxilonga umba.

Ukwenza njalo, uya kudibanisa umfundi we-OBD2 kwi-OBD2 16 isiqhagamshelanisi sephini kufuphi nevili lokuqhuba.

Oku kumvumela ukuba afunde iikhowudi ze-OBD2 aka Diagnostic Trouble Codes (DTCs) ukuphonononga kunye nokusombulula ingxaki.

Isidibanisi se-OBD2

Isidibanisi se-OBD2 sikuvumela ukuba ufikelele kwidatha kwimoto yakho ngokulula.Umgangatho we-SAE J1962 uchaza iindidi ezimbini ze-OBD2 ze-16-pin yesiqhagamshelo (A & B).

Kulo mzekeliso ngumzekelo woHlobo lwe-OBD2 i-pin connector (ekwabizwa ngokuba yi-Data Link Connector, i-DLC).

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Iinkcukacha

Izinto ezimbalwa ekufuneka uziqwalasele:

Isidibanisi se-OBD2 sikufuphi nevili lakho lokuqhuba, kodwa sinokufihlwa ngasemva kwezixhobo/iipaneli

I-Pin 16 inika amandla ebhetri (kaninzi ngexa ukucinywa kucinyiwe)

I-OBD2 pinout ixhomekeke kwiprothokholi yonxibelelwano

Ibhodi yokulawula unxibelelwano lwemoto OBD2

Eyona protocol ixhaphakileyo yi-CAN (nge-ISO 15765), okuthetha ukuba izikhonkwane 6 (CAN-H) kunye ne-14 (CAN-L) ziya kudityaniswa.

Kwibhodi yoxilongo, i-OBD2, 'yiprothokholi yomgangatho ophezulu' (njengolwimi).I-CAN yindlela yonxibelelwano (efana nefowuni).

Ngokukodwa, umgangatho we-OBD2 uchaza umdibaniso we-OBD2, incl.iseti yemigaqo emihlanu enokuthi isebenze (jonga ngezantsi).Ngaphaya koko, ukusukela ngo-2008, i-CAN ibhasi (ISO 15765) ibe yiprotocol enyanzelekileyo ye-OBD2 kuzo zonke iimoto ezithengiswa e-US.

I-ISO 15765 ibhekisa kwiseti yezithintelo ezisetyenziswa kumgangatho we-CAN (okwawona uchazwa kwi-ISO 11898).Omnye unokuthi i-ISO 15765 ifana ne-"CAN yeemoto".

Ngokukodwa, i-ISO 15765-4 ichaza umaleko wokoqobo, ikhonkco ledatha kunye neeleya zenethiwekhi, ifuna ukulungelelanisa ujongano lwebhasi ye-CAN yezixhobo zovavanyo lwangaphandle.I-ISO 15765-2 yona ichaza umaleko wezothutho (ISO TP) wokuthumela iifreyimu ze-CAN ezinomthwalo ogqithisa i-8 bytes.Lo mgangatho uphantsi ngamanye amaxesha ubizwa ngokuba nguNxibelelwano lweDiagnostic ngaphezulu kwe-CAN (okanye iDoCAN).Bona kwakhona 7 umaleko OSI imodeli imodeli.

I-OBD2 inokuthelekiswa nezinye iiprothokholi zomgangatho ophezulu (umz. J1939, CANopen).

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