Hoʻololi ke ea kahe i ka ea omo i hōʻailona uila a hoʻouna ʻia i ka ʻāpana uila uila (ECU) ma ke ʻano he hoʻokahi o nā hōʻailona kumu e hoʻoholo ai i ka hoʻokele wahie. E like me nā loina ana like ʻole, hiki ke hoʻokaʻawale ʻia i ʻehā mau ʻano: rotating vane air flow sensor (Toyota PREVIA station wagon), Carmen vortex air flow sensor (Toyota Lexus LS400 car), i hoʻolaʻa ʻia ka ea kahe (VG30E engine no Nissan Maxima a me Volvo. B230F engine no ka hale kaʻaahi Tianjin Sanfeng TJ6481AQ4) a me ka ʻike kiʻi ʻoniʻoni wela. ʻO nā mea mua ʻelua he ʻano kahe leo, a ʻo nā mea hope ʻelua he ʻano kahe nui. I kēia manawa, aia nā ʻano ʻelua o nā mea ʻike kahe o ka ea: ʻo ka laina hoʻolaʻa ea kahe ʻana a me ka ʻike kiʻi ʻoniʻoni wela.

1. ʻO ka hemahema o ke kaula mana kamepiula e ʻoi aku ka maikaʻi o ka hana o ka ʻenekini kaʻa a me ka haʻahaʻa o ka hoʻokele waiwai, no laila e nānā mua ʻia ke kaula mana kamepiula ma mua o ka hoʻololi ʻana i ke kamepiula kaʻa. (Pono ke kaula mana e hoʻokomo i ka uwea honua e manaʻo ʻia he kaula mana piha).

2. Inā 'oi aku ke ki'eki'e o ka hō'ailona voltage o ka mea'ike oxygen ma mua o ka waiwai ma'amau, ua haumia paha ka mea 'ike, a i nā manawa he nui e ho'onui i ka ratio o ka ea.

3. Inā haʻahaʻa ka hōʻailona uila o ka mea ʻike oxygen ma mua o ka waiwai maʻamau, ʻaʻole paha i hoʻonohonoho ʻia ka mea ʻike, e alakaʻi i ka ratio lean air-fuel o ka mīkini.

4, i ka nānā ʻana i ka mea ʻike oxygen pono e hoʻohana i ka multimeter digital, a i ʻole oscilloscope.

5. Inā hewa ka mea wela o ka oxygen sensor, hiki iā ia ke hoʻolōʻihi i ka manawa hana open-loop o ka mīkini a hoʻonui i ka hoʻohana wahie.

6. Hiki i ka mīkini hoʻoheheʻe wela ke nānā i kāna hana me ka mika kikohoʻe a i ʻole ka mika analog.

7. Ma ke kaapuni ect o kekahi mau lolouila, e hoomaluia ka mea pale kuloko i kekahi wela o ka enekini e hoololi i ka volta ma ka mea ike. Inā ʻano ʻino ka volta i kēia manawa i ke ana ʻana, ʻaʻole ia he manaʻo he hewa ka ʻike.

8. E ho'āʻo ana i ka engine coolant temperature sensor a me ka ea wela wela hiki ke hoʻohana i ke kaʻina hana like, akā ʻo ka mea wale nō e hoʻomaopopo ʻia he ʻokoʻa ko lākou mau ʻāpana hoʻololi wela, no laila ʻaʻohe hōʻailona uila like ʻole i ka mahana like.

9. Ke weheʻia ka valve throttle a nānāʻia ka hōʻailona voltage o ka meaʻike kūlana throttle, hiki ke nānāʻia ke kūpaʻa o ka meaʻike e ka vibration me ka ikaika kūpono. He mea maikaʻi loa kēia ʻano hana no kekahi mau hewa pili virtual circuit.

10. He nui nā ʻike kūlana throttle ʻehā i hoʻohana ʻia no ka hāʻawi ʻana i ka ʻenekini mana me ka ʻike kūlana hana o ka ʻenekini i ka wā i noho ʻole ai ka throttle.