OBD-II Hom 6 & Hom 8 Qhov txawv:

• Hom 6→ Qhov zoo tshaj plaws raukuaj xyuas cov teeb meem tsis sib xwslos ntawm kev tshuaj xyuas cov ntaub ntawv sim khaws cia.
• Hom 8→ Siv rauactive xeem thiab tivthaiv tswj, feem ntau yog los ntawm cov kws tshaj lij.

Rau qhov tseeb diagnostics, ib txwm xa mus raucov chaw tsim khoom tshwj xeeb cov lus qhiathiab sivtau tshaj cov cuab yeej scan. Peb muaj qee cov cuab yeej scanner uas tsim-hauv hom 6 & 8 ntawm kev muag khoom.

Hom 6 (Nyob rau hauv-Board Diagnostic Test Results – Tsis-nruam xyuas)

Txhais

Hom 6 muab kev nkag mus raukuaj cov txiaj ntsig rau cov saib tsis txuas ntxiv-Kev kuaj mob uas khiav tsuas yog nyob rau hauv tej yam kev mob (xws li, catalytic converter efficiency, oxygen sensor teb).

Lub hom phiaj

• Cov khwxeem tau(pass/fail) rau cov khoom uas tsis tau saib xyuas tas li.
• Muabcov ntaub ntawv ntxaws ntxaws(piv txwv li, sensor teb lub sij hawm, efficiency pib).
• Pab kuaj mobtsis sib xwslos yog kev ua haujlwm tsis zoo.

Cov ntaub ntawv tseem ceeb

• TID (Test Identifier)- Qhia meej hom kev xeem (piv txwv li, oxygen sensor teb kuaj).
• CID (Component Identifier)- Txheeb xyuas qhov ntsuas qhov ntsuas (xws li Bank 1 Sensor 1).
• Test tus nqi- Cov ntaub ntawv nyoos lossis dhau / tsis ua haujlwm (piv txwv li, “0″ = dhau, “1″ = tsis).

Cov ntawv thov siv

✔ Kev kuaj xyuascatalytic converter efficiency(eg, TID 0 × 03).
✔ Tshawb xyuasoxygen sensor teb lub sijhawm(eg, TID 0 × 05).
✔ Kev kuaj pomevaporative emissions system xau(me me xau).

Piv txwv

Teb zoo li:

• TID = 0 × 03, CID = 0 × 12, Value = 120
  → txhais tau hais tias cov pa oxygen sensor teb cov txiaj ntsig yog120ms ib(yuav tsum muab piv rau OEM specs).

Hom 8 (Control of On-Board System, Test lossis Component)

Txhais

Hom 8 tso caiactive tswj ntawm tsheb subsystems- siv rauua rau cov kev ntsuam xyuas, qhib cov khoom siv, lossis kho qhov ntsuas.

Lub hom phiaj

• Force actuators (relays, li qub, thiab lwm yam) ua haujlwmrau kev sim.
• Simulates tej yam kev mob(piv txwv li, EGR valve qhib, roj twj tso kua mis qhib).
• Siv hauvemissions ntsig txog kev saib xyuas(piv txwv li, DPF rov tsim dua tshiab hauv cov tsheb diesel).

Cov lus txib

• Tig ON/OFF txias kiv cua(kom kuaj xyuas hluav taws xob circuits).
• Activate roj twj tso kua mis(rau kev sim siab).
• Lub voj voog EGR valve(los txheeb xyuas qhov txav).
• Pib DPF rov tsim dua tshiab(hauv cov cav tov diesel).

Cov Lus Cim Tseem Ceeb

⚠Lub tsheb tshwj xeeb- Tsis yog txhua lub tsheb txhawb hom 8, thiab cov lus txib sib txawv los ntawm cov chaw tsim khoom.
⚠Yuav tsum muaj cov cuab yeej tshaj lij- Feem ntau xav tau OEM-theem scanners (piv txwv li, GM Tech2, Ford IDS).
⚠Kev nyab xeeb- Cov lus txib tsis raug yuav ua rau cov khoom puas lossis cuam tshuam rau kev tsav tsheb.

Hom 6 vs Hom 8: Qhov txawv ntawm qhov tseem ceeb