Malfunction indicator lamp - Histórico de revisões

Calimero0000 em 17h16min de 30 de março de 2014

2014-03-30T17:16:37Z

← Revisão anterior		Revisão das 17h16min de 30 de março de 2014
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	[[Imagem:Check Engine.jpg\|thumb\|180px\|right\|MIL no funcionamento do motor indicando mau funcionamento no sistema de controle do motor.]]		[[Imagem:Check Engine.jpg\|thumb\|180px\|right\|MIL no funcionamento do motor indicando mau funcionamento no sistema de controle do motor.]]

	A '''malfunction indicator lamp''' ('''MIL'''), também conhecido por '''check engine light''', ou [[Tell-tale (automotive)\|Lâmpada de anomalia do motor]] para indicar o mau funcionamento de um sistema de gerenciamento do motor computorizado. Pode ser encontrada no painel de instrumentos da maioria dos automóveis. Quando iluminado, normalmente tem uma cor amarela ou vermelha. Em veículos equipados com [[On-Board Diagnostics\|OBD-II]], a luz tem duas fases: firme (indicando uma falha menor como uma tampa solta falhando [[sensor de oxigénio]]), ou intermitente (indicando uma falha grave, que pode potencialmente danificar o [[Conversor catalítico]] se não corrigida num período prolongado). Quando o MIL está aceso, a [[unidade de control motor ]] guarda os códigos de falha relacionados com a anomalia, que podem ser obtidos com um [[On-board diagnostics#Hand-held Scan Tools\|scan tool]] e utilizado para um diagnóstico ainda mais preciso. A lâmpada indicadora de mau funcionamento normalmente carrega a legenda {{smallcaps\|check engine}}, {{smallcaps\|mecanismo de serviço em breve}}, ou um pictograma de um motor. Nos Estados Unidos, as funções específicas do MIL são especificadas ~~por~~ [[United States Environmental Protection Agency\|EPA]] regulamentos.<ref>http://books.google.com/books?id=q8_vHlaJHVwC&pg=PA200&dq=Malfunction+indicator+light+OBD&hl=en&ei=h4j-TNSEFoiDOpaCvc4M&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=Malfunction%20indicator%20light%20OBD&f=false Code of Federal Regulations CFR 40 ar{Part 86, retrieved 2010 Dec 7</ref>		A '''malfunction indicator lamp''' ('''MIL'''), também conhecido por '''check engine light''', ou [[Tell-tale (automotive)\|Lâmpada de anomalia do motor]] para indicar o mau funcionamento de um sistema de gerenciamento do motor computorizado. Pode ser encontrada no painel de instrumentos da maioria dos automóveis. Quando iluminado, normalmente tem uma cor amarela ou vermelha. Em veículos equipados com [[On-Board Diagnostics\|OBD-II]], a luz tem duas fases: firme (indicando uma falha menor como uma tampa solta falhando [[sensor de oxigénio]]), ou intermitente (indicando uma falha grave, que pode potencialmente danificar o [[Conversor catalítico]] se não corrigida num período prolongado). Quando o MIL está aceso, a [[unidade de control motor ]] guarda os códigos de falha relacionados com a anomalia, que podem ser obtidos com um [[On-board diagnostics#Hand-held Scan Tools\|scan tool]] e utilizado para um diagnóstico ainda mais preciso. A lâmpada indicadora de mau funcionamento normalmente carrega a legenda {{smallcaps\|check engine}}, {{smallcaps\|mecanismo de serviço em breve}}, ou um pictograma de um motor. Nos Estados Unidos, as funções específicas do MIL são especificadas pela [[United States Environmental Protection Agency\|EPA]] regulamentos.<ref>http://books.google.com/books?id=q8_vHlaJHVwC&pg=PA200&dq=Malfunction+indicator+light+OBD&hl=en&ei=h4j-TNSEFoiDOpaCvc4M&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=Malfunction%20indicator%20light%20OBD&f=false Code of Federal Regulations CFR 40 ar{Part 86, retrieved 2010 Dec 7</ref>

	A MIL apareceu no início dos anos 80, juntamente com controles de motor computorizado. Mesmo os sistemas mais antigos, tais como GM CCC (Computer Command Control) o sistema tinha uma funcionalidade de auto diagnóstico. Quando a unidade de comando deteta uma falha, é iluminado a MIL. Até OBDII, na maioria dos carros a MIL poderia servir de contador de códigos, quando dois pinos do [[ALDL]] curto-circuitados, a luz seria piscar os códigos, para instância (piscar) (pausa) (piscar) (piscar) para código 12. Alguns fabricantes, tais como Honda, manteve este recurso mesmo depois OBDII.		A MIL apareceu no início dos anos 80, juntamente com controles de motor computorizado. Mesmo os sistemas mais antigos, tais como GM CCC (Computer Command Control) o sistema tinha uma funcionalidade de auto diagnóstico. Quando a unidade de comando deteta uma falha, é iluminado a MIL. Até OBDII, na maioria dos carros a MIL poderia servir de contador de códigos, quando dois pinos do [[ALDL]] curto-circuitados, a luz seria piscar os códigos, para instância (piscar) (pausa) (piscar) (piscar) para código 12. Alguns fabricantes, tais como Honda, manteve este recurso mesmo depois OBDII.

Calimero0000 em 17h15min de 30 de março de 2014

2014-03-30T17:15:18Z

← Revisão anterior		Revisão das 17h15min de 30 de março de 2014
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	{{Sem-fontes\|data=março de 2014}}		{{Sem-fontes\|data=março de 2014}}
	[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, ~~this one labeled~~ "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, ou lâmpada de anomalia do motor "Service Engine Soon (mecanismo de serviço em breve)".]]
	[[Ficheiro:Vw engine check.jpg\|thumb\|180px\|A MIL "Check Engine" ~~light on a~~ Volkswagen Bora ~~indicating a fault in the Engine Management System~~.]]		[[Ficheiro:Vw engine check.jpg\|thumb\|180px\|A MIL "Check Engine" Luz no Volkswagen Bora indicador de defeitos na Unidade de Comando do Motor.]]
	[[Imagem:Check Engine.jpg\|thumb\|180px\|right\|MIL ~~on a running engine indicating malfunction in engine control system~~.]]		[[Imagem:Check Engine.jpg\|thumb\|180px\|right\|MIL no funcionamento do motor indicando mau funcionamento no sistema de controle do motor.]]

	A '''malfunction indicator lamp''' ('''MIL'''), ~~tambem~~ conhecido por '''check engine light''', ~~serve~~ [[Tell-tale (automotive)\|~~tell-tale~~]] para indicar o mau funcionamento de um sistema de gerenciamento de motor ~~computadorizado~~. Pode ser encontrada no painel de instrumentos da maioria dos automóveis. Quando iluminado, normalmente ~~é também~~ uma cor amarela ou vermelha. Em veículos equipados com [[On-Board Diagnostics\|OBD-II]], ~~the light has two stages~~: ~~steady~~ (~~indicating a minor fault such as a loose gas cap or failing~~ [[~~oxygen~~ sensor]]) ~~and flashing~~ (~~indicating a severe fault~~, ~~that could potentially damage the~~ [[~~catalytic converter~~]] ~~if left uncorrected for an extended period~~). ~~When the~~ MIL ~~is lit~~, ~~the~~ [[~~engine~~ control ~~unit~~]] ~~stores~~ a ~~fault code related to the malfunction~~, ~~which can be retrieved with a~~ [[On-board diagnostics#Hand-held Scan Tools\|scan tool]] ~~and used for further diagnosis~~. ~~The malfunction indicator lamp usually bears the legend~~ {{smallcaps\|check engine}}, {{smallcaps\|~~service engine soon~~}}, ~~or a pictogram of an engine~~. ~~In the United States~~, ~~specific functions are required of the~~ MIL by [[United States Environmental Protection Agency\|EPA]] ~~regulations~~.<ref>http://books.google.com/books?id=q8_vHlaJHVwC&pg=PA200&dq=Malfunction+indicator+light+OBD&hl=en&ei=h4j-TNSEFoiDOpaCvc4M&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=Malfunction%20indicator%20light%20OBD&f=false Code of Federal Regulations CFR 40 ar{Part 86, retrieved 2010 Dec 7</ref>		A '''malfunction indicator lamp''' ('''MIL'''), também conhecido por '''check engine light''', ou [[Tell-tale (automotive)\|Lâmpada de anomalia do motor]] para indicar o mau funcionamento de um sistema de gerenciamento do motor computorizado. Pode ser encontrada no painel de instrumentos da maioria dos automóveis. Quando iluminado, normalmente tem uma cor amarela ou vermelha. Em veículos equipados com [[On-Board Diagnostics\|OBD-II]], a luz tem duas fases: firme (indicando uma falha menor como uma tampa solta falhando [[sensor de oxigénio]]), ou intermitente (indicando uma falha grave, que pode potencialmente danificar o [[Conversor catalítico]] se não corrigida num período prolongado). Quando o MIL está aceso, a [[unidade de control motor ]] guarda os códigos de falha relacionados com a anomalia, que podem ser obtidos com um [[On-board diagnostics#Hand-held Scan Tools\|scan tool]] e utilizado para um diagnóstico ainda mais preciso. A lâmpada indicadora de mau funcionamento normalmente carrega a legenda {{smallcaps\|check engine}}, {{smallcaps\|mecanismo de serviço em breve}}, ou um pictograma de um motor. Nos Estados Unidos, as funções específicas do MIL são especificadas por [[United States Environmental Protection Agency\|EPA]] regulamentos.<ref>http://books.google.com/books?id=q8_vHlaJHVwC&pg=PA200&dq=Malfunction+indicator+light+OBD&hl=en&ei=h4j-TNSEFoiDOpaCvc4M&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=Malfunction%20indicator%20light%20OBD&f=false Code of Federal Regulations CFR 40 ar{Part 86, retrieved 2010 Dec 7</ref>

	~~The~~ MIL ~~appeared in the early 80s along with computerized engine controls~~. ~~Even the earliest systems~~, ~~such as~~ GM's CCC (Computer Command Control) ~~system had self diagnosis functionality~~. ~~When the computer detected~~ a ~~fault~~, ~~it illuminated the~~ MIL. ~~Up until~~ OBDII, ~~on most cars the~~ MIL ~~could output codes~~, ~~when two pins on the~~ [[ALDL]] ~~are jumped~~, ~~the light would flash the codes~~, ~~for instance~~ (~~blink~~) (~~pause~~) (~~blink~~) (~~blink~~) ~~for code~~ 12. ~~Some manufacturers~~, ~~such as~~ Honda, ~~retained this feature even after~~ OBDII.		A MIL apareceu no início dos anos 80, juntamente com controles de motor computorizado. Mesmo os sistemas mais antigos, tais como GM CCC (Computer Command Control) o sistema tinha uma funcionalidade de auto diagnóstico. Quando a unidade de comando deteta uma falha, é iluminado a MIL. Até OBDII, na maioria dos carros a MIL poderia servir de contador de códigos, quando dois pinos do [[ALDL]] curto-circuitados, a luz seria piscar os códigos, para instância (piscar) (pausa) (piscar) (piscar) para código 12. Alguns fabricantes, tais como Honda, manteve este recurso mesmo depois OBDII.

	==~~"Trouble" indicator~~==		==Indicador de problemas==
	Some older vehicles had a single indicator labeled "trouble" or "engine"; this was not a MIL, but an [[Tell-tale (automotive)\|"idiot light"]] meant to indicate serious trouble with the engine (low oil pressure, overheating, or charging system problems) and an imminent breakdown. This usage of the "engine" light was discontinued in the mid-1980s, to prevent confusion with the MIL. The MIL is commonly referred to today as the "check engine light" or the "service engine soon light".		Some older vehicles had a single indicator labeled "trouble" or "engine"; this was not a MIL, but an [[Tell-tale (automotive)\|"idiot light"]] meant to indicate serious trouble with the engine (low oil pressure, overheating, or charging system problems) and an imminent breakdown. This usage of the "engine" light was discontinued in the mid-1980s, to prevent confusion with the MIL. The MIL is commonly referred to today as the "check engine light" or the "service engine soon light".

	==~~Odometer triggering~~==		==Odômetro==
	~~Some vehicles made in the late 90s and early-to-mid 2000s have a~~ MIL ~~that illuminates based on the odometer reading~~, ~~regardless of what is going on in the engine~~. ~~For example~~, ~~in several~~ [[Mazda]] ~~models~~, ~~the light will come on at~~ 80,000 ~~miles and remain lit without generating a computer trouble code~~. Volvo ~~had a light labeled~~ "Lambda", ~~lambda sond being another name for oxygen~~ sensor. ~~This was done in order to remind the driver to change the oxygen~~ sensor.		Alguns veículos feitos no final da década de 90 e início de meados da década de 2000 tem um MIL que ilumina com base no odômetro lendo, independentemente do que está acontecendo no motor. Por exemplo, em vários modelos[[Mazda]], a luz venha a 80.000 km e permanece acesa sem gerar um código de problema de computador. Volvo tinha uma luz rotulada "Lambda", sonda-Lambda sendo um outro nome para sensor de oxigénio. Isto foi feito para lembrar o motorista de verificar o sensor de oxigénio.

	~~Some American-built~~ 1973–1976 [[Chrysler Corporation]] ~~vehicles had a similar odometer-triggered reminder~~: "~~Check~~ EGR", ~~which was reset after service at a~~ Chrysler ~~dealership~~.		Aguns Americanos construidos entre 1973–1976 como [[Chrysler Corporation]] veículos tiveram um lembrete acionado por odômetro semelhante: "Verificar EGR", que foi redefinido após o serviço numa concessionária da Chrysler.
	~~The~~ MIL ~~is also illuminated prior to starting the engine~~, ~~along with other tell-tales on the dashboard~~, ~~to demonstrate that the lamp is working and not burned out~~. ~~The lamp will turn off once the car is started if no monitored faults exist~~. ~~The~~ MIL ~~will also illuminate if the engine has been cranked but failed to start after returning the ignition to~~ "ON.~~" In most modern vehicles this is usually due to not giving the engine enough cranking time to start~~. ~~In pre~~-~~fuel injection years many cranking attempts were sometimes required to start the car~~. ~~If the engine fails to start on the second or third attempt then an actual~~ visual ~~check of the engine could be required~~. ~~If the engine suddenly stalls or is triggered by an overload~~, ~~such as on a~~ manual ~~transmission car~~, ~~the~~ MIL ~~will also illuminate until the engine is started again~~.		O MIL é também iluminado antes de ligar o motor, juntamente com outros avisadores no painel, para demonstrar que a lâmpada está funcionando e não queimada. A lâmpada apaga-se depois que o motor arranque se existirem zero falhas monitorizadas. A MIL também se acende falhado ao iniciar após o retorno da ignição em "ON". Em veículos mais modernos isto é geralmente devido a não dar ao motor suficiente rotação no momento do arranque. Nos anos de injeção de pré-combustível muitas tentativas de arranque às vezes eram necessários para ligar o motor. Se o motor não ligar na segunda ou terceira tentativa um controle visual do motor pode ser necessário. Se o motor, de repente, se for abaixo ou é desencadeado por uma sobrecarga, como em um carro da transmissão manual, o MIL também acende até que o motor seja iniciado novamente.

	==~~False~~ triggering==		==Falso triggering==
	~~Higher amounts of~~ [[~~methanol~~]]/[[~~ethanol~~]] (~~or other additives~~) ~~than the engine is equipped to handle may trigger the~~ MIL (~~see~~ [[E85]]). ~~These burn differently from gasoline, and the~~ EFI ~~system may mistakenly interpret the oxygen~~ sensor~~'s readings as being incorrect~~. [[~~Oxygenated gasoline~~]] ~~can cause this false triggering in early~~ EFI ~~systems~~.{{Citation needed\|date=~~May~~ 2011}}		Quantidades mais elevadas de [[metanol]]/[[etanol]] (ou outros aditivos) do que o motor é equipado para segurar podem desencadear a MIL (ver [[E85]]). Estes queimam diferentemente da gasolina e o Sistema EFI pode inequivocamente interpretar as leituras do sensor de oxigénio como sendo incorretas. [[Oxigenato\|Gasolina oxigenada]] pode ser a causa provocando falso início do sistema EFI.{{Citation needed\|date = maio de 2011}}

	==Ver ~~tambêm~~==		==Ver também==
	* [[OBD-II PIDs]] ("Parameter IDs")		* [[OBD-II PIDs]] ("Parameter IDs")

	==~~References~~==		==Referencias==
	{{reflist}}		{{reflist}}

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	{{DEFAULTSORT:Malfunction Indicator Lamp}}		{{DEFAULTSORT:Malfunction Indicator Lamp}}
	[[~~Category~~:~~Vehicle parts~~]]		[[Categoria:Partes do veiculo]]

Calimero0000 em 15h54min de 30 de março de 2014

2014-03-30T15:54:17Z

← Revisão anterior		Revisão das 15h54min de 30 de março de 2014
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	{{~~Multitag\|~~Sem-fontes~~=Dezembro 2010~~\|data=março de 2014}}		{{Sem-fontes\|data=março de 2014}}
	[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]

Calimero0000 em 15h53min de 30 de março de 2014

2014-03-30T15:53:04Z

← Revisão anterior		Revisão das 15h53min de 30 de março de 2014
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	{{Multitag\|Sem-fontes=Dezembro 2010\|~~globalize~~=~~Outubro 2007~~}}		{{Multitag\|Sem-fontes=Dezembro 2010\|data=março de 2014}}
	[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]

Calimero0000 em 15h50min de 30 de março de 2014

2014-03-30T15:50:07Z

← Revisão anterior		Revisão das 15h50min de 30 de março de 2014
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	{{Multitag\|~~sfontes~~=~~Dezembro2010~~\|globalize=Outubro 2007}}		{{Multitag\|Sem-fontes=Dezembro 2010\|globalize=Outubro 2007}}
	[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]

Calimero0000 em 15h45min de 30 de março de 2014

2014-03-30T15:45:38Z

← Revisão anterior		Revisão das 15h45min de 30 de março de 2014
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	{{Multitag\|~~refimprove~~=Dezembro2010\|globalize=Outubro 2007}}		{{Multitag\|sfontes=Dezembro2010\|globalize=Outubro 2007}}
	[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]

Calimero0000 em 15h40min de 30 de março de 2014

2014-03-30T15:40:47Z

← Revisão anterior		Revisão das 15h40min de 30 de março de 2014
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	{{~~Multiple issues~~\|refimprove=~~December2010~~\|globalize=~~October~~ 2007}}		{{Multitag\|refimprove=Dezembro2010\|globalize=Outubro 2007}}
	[[~~File~~:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[~~Image~~:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]
	[[~~File~~:Vw engine check.jpg\|thumb\|180px\|A MIL "Check Engine" light on a Volkswagen Bora indicating a fault in the Engine Management System.]]		[[Ficheiro:Vw engine check.jpg\|thumb\|180px\|A MIL "Check Engine" light on a Volkswagen Bora indicating a fault in the Engine Management System.]]
	[[~~Image~~:Check Engine.jpg\|thumb\|180px\|right\|MIL on a running engine indicating malfunction in engine control system.]]		[[Imagem:Check Engine.jpg\|thumb\|180px\|right\|MIL on a running engine indicating malfunction in engine control system.]]

	A '''malfunction indicator lamp''' ('''MIL'''), ~~also known as a~~ '''check engine light''', ~~is a~~ [[Tell-tale (automotive)\|tell-tale]] ~~to indicate malfunction of a computerized engine management system~~. ~~It is found on the instrument panel of most automobiles~~. ~~When illuminated~~, ~~it is typically either an amber or red color~~. ~~On vehicles equipped with~~ [[On-Board Diagnostics\|OBD-II]], the light has two stages: steady (indicating a minor fault such as a loose gas cap or failing [[oxygen sensor]]) and flashing (indicating a severe fault, that could potentially damage the [[catalytic converter]] if left uncorrected for an extended period). When the MIL is lit, the [[engine control unit]] stores a fault code related to the malfunction, which can be retrieved with a [[On-board diagnostics#Hand-held Scan Tools\|scan tool]] and used for further diagnosis. The malfunction indicator lamp usually bears the legend {{smallcaps\|check engine}}, {{smallcaps\|service engine soon}}, or a pictogram of an engine. In the United States, specific functions are required of the MIL by [[United States Environmental Protection Agency\|EPA]] regulations.<ref>http://books.google.com/books?id=q8_vHlaJHVwC&pg=PA200&dq=Malfunction+indicator+light+OBD&hl=en&ei=h4j-TNSEFoiDOpaCvc4M&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=Malfunction%20indicator%20light%20OBD&f=false Code of Federal Regulations CFR 40 ar{Part 86, retrieved 2010 Dec 7</ref>		A '''malfunction indicator lamp''' ('''MIL'''), tambem conhecido por '''check engine light''', serve [[Tell-tale (automotive)\|tell-tale]] para indicar o mau funcionamento de um sistema de gerenciamento de motor computadorizado. Pode ser encontrada no painel de instrumentos da maioria dos automóveis. Quando iluminado, normalmente é também uma cor amarela ou vermelha. Em veículos equipados com [[On-Board Diagnostics\|OBD-II]], the light has two stages: steady (indicating a minor fault such as a loose gas cap or failing [[oxygen sensor]]) and flashing (indicating a severe fault, that could potentially damage the [[catalytic converter]] if left uncorrected for an extended period). When the MIL is lit, the [[engine control unit]] stores a fault code related to the malfunction, which can be retrieved with a [[On-board diagnostics#Hand-held Scan Tools\|scan tool]] and used for further diagnosis. The malfunction indicator lamp usually bears the legend {{smallcaps\|check engine}}, {{smallcaps\|service engine soon}}, or a pictogram of an engine. In the United States, specific functions are required of the MIL by [[United States Environmental Protection Agency\|EPA]] regulations.<ref>http://books.google.com/books?id=q8_vHlaJHVwC&pg=PA200&dq=Malfunction+indicator+light+OBD&hl=en&ei=h4j-TNSEFoiDOpaCvc4M&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=Malfunction%20indicator%20light%20OBD&f=false Code of Federal Regulations CFR 40 ar{Part 86, retrieved 2010 Dec 7</ref>

	The MIL appeared in the early 80s along with computerized engine controls. Even the earliest systems, such as GM's CCC (Computer Command Control) system had self diagnosis functionality. When the computer detected a fault, it illuminated the MIL. Up until OBDII, on most cars the MIL could output codes, when two pins on the [[ALDL]] are jumped, the light would flash the codes, for instance (blink) (pause) (blink) (blink) for code 12. Some manufacturers, such as Honda, retained this feature even after OBDII.		The MIL appeared in the early 80s along with computerized engine controls. Even the earliest systems, such as GM's CCC (Computer Command Control) system had self diagnosis functionality. When the computer detected a fault, it illuminated the MIL. Up until OBDII, on most cars the MIL could output codes, when two pins on the [[ALDL]] are jumped, the light would flash the codes, for instance (blink) (pause) (blink) (blink) for code 12. Some manufacturers, such as Honda, retained this feature even after OBDII.

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{{Multiple issues|refimprove=December2010|globalize=October 2007}}
[[File:Motorkontrollleuchte.svg|right|thumb|180px|Malfunction Indicator Icon]]
[[Image:Check-Engine-Light.jpg|thumb|180px|right|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]
[[File:Vw engine check.jpg|thumb|180px|A MIL "Check Engine" light on a Volkswagen Bora indicating a fault in the Engine Management System.]]
[[Image:Check Engine.jpg|thumb|180px|right|MIL on a running engine indicating malfunction in engine control system.]]

A '''malfunction indicator lamp''' ('''MIL'''), also known as a '''check engine light''', is a [[Tell-tale (automotive)|tell-tale]] to indicate malfunction of a computerized engine management system. It is found on the instrument panel of most automobiles. When illuminated, it is typically either an amber or red color. On vehicles equipped with [[On-Board Diagnostics|OBD-II]], the light has two stages: steady (indicating a minor fault such as a loose gas cap or failing [[oxygen sensor]]) and flashing (indicating a severe fault, that could potentially damage the [[catalytic converter]] if left uncorrected for an extended period). When the MIL is lit, the [[engine control unit]] stores a fault code related to the malfunction, which can be retrieved with a [[On-board diagnostics#Hand-held Scan Tools|scan tool]] and used for further diagnosis. The malfunction indicator lamp usually bears the legend {{smallcaps|check engine}}, {{smallcaps|service engine soon}}, or a pictogram of an engine. In the United States, specific functions are required of the MIL by [[United States Environmental Protection Agency|EPA]] regulations.<ref>http://books.google.com/books?id=q8_vHlaJHVwC&pg=PA200&dq=Malfunction+indicator+light+OBD&hl=en&ei=h4j-TNSEFoiDOpaCvc4M&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=Malfunction%20indicator%20light%20OBD&f=false Code of Federal Regulations CFR 40 ar{Part 86, retrieved 2010 Dec 7</ref>

The MIL appeared in the early 80s along with computerized engine controls. Even the earliest systems, such as GM's CCC (Computer Command Control) system had self diagnosis functionality. When the computer detected a fault, it illuminated the MIL. Up until OBDII, on most cars the MIL could output codes, when two pins on the [[ALDL]] are jumped, the light would flash the codes, for instance (blink) (pause) (blink) (blink) for code 12. Some manufacturers, such as Honda, retained this feature even after OBDII.

=="Trouble" indicator==
Some older vehicles had a single indicator labeled "trouble" or "engine"; this was not a MIL, but an [[Tell-tale (automotive)|"idiot light"]] meant to indicate serious trouble with the engine (low oil pressure, overheating, or charging system problems) and an imminent breakdown. This usage of the "engine" light was discontinued in the mid-1980s, to prevent confusion with the MIL. The MIL is commonly referred to today as the "check engine light" or the "service engine soon light".

==Odometer triggering==
Some vehicles made in the late 90s and early-to-mid 2000s have a MIL that illuminates based on the odometer reading, regardless of what is going on in the engine. For example, in several [[Mazda]] models, the light will come on at 80,000 miles and remain lit without generating a computer trouble code. Volvo had a light labeled "Lambda", lambda sond being another name for oxygen sensor. This was done in order to remind the driver to change the oxygen sensor.

Some American-built 1973–1976 [[Chrysler Corporation]] vehicles had a similar odometer-triggered reminder: "Check EGR", which was reset after service at a Chrysler dealership.
The MIL is also illuminated prior to starting the engine, along with other tell-tales on the dashboard, to demonstrate that the lamp is working and not burned out. The lamp will turn off once the car is started if no monitored faults exist. The MIL will also illuminate if the engine has been cranked but failed to start after returning the ignition to "ON." In most modern vehicles this is usually due to not giving the engine enough cranking time to start. In pre-fuel injection years many cranking attempts were sometimes required to start the car. If the engine fails to start on the second or third attempt then an actual visual check of the engine could be required. If the engine suddenly stalls or is triggered by an overload, such as on a manual transmission car, the MIL will also illuminate until the engine is started again.

==False triggering==
Higher amounts of [[methanol]]/[[ethanol]] (or other additives) than the engine is equipped to handle may trigger the MIL (see [[E85]]). These burn differently from gasoline, and the EFI system may mistakenly interpret the oxygen sensor's readings as being incorrect. [[Oxygenated gasoline]] can cause this false triggering in early EFI systems.{{Citation needed|date=May 2011}}

==Ver tambêm==
* [[OBD-II PIDs]] ("Parameter IDs")

==References==
{{reflist}}

{{CarDesign nav}}

{{DEFAULTSORT:Malfunction Indicator Lamp}}
[[Category:Vehicle parts]]

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	[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]

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	[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]

← Revisão anterior		Revisão das 15h50min de 30 de março de 2014
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	[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]

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	[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]

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	[[~~File~~:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]		[[Ficheiro:Motorkontrollleuchte.svg\|right\|thumb\|180px\|Malfunction Indicator Icon]]
	[[~~Image~~:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]		[[Imagem:Check-Engine-Light.jpg\|thumb\|180px\|right\|A Malfunction Indicator Lamp, this one labeled "Service Engine Soon".]]
	[[~~File~~:Vw engine check.jpg\|thumb\|180px\|A MIL "Check Engine" light on a Volkswagen Bora indicating a fault in the Engine Management System.]]		[[Ficheiro:Vw engine check.jpg\|thumb\|180px\|A MIL "Check Engine" light on a Volkswagen Bora indicating a fault in the Engine Management System.]]
	[[~~Image~~:Check Engine.jpg\|thumb\|180px\|right\|MIL on a running engine indicating malfunction in engine control system.]]		[[Imagem:Check Engine.jpg\|thumb\|180px\|right\|MIL on a running engine indicating malfunction in engine control system.]]

	A '''malfunction indicator lamp''' ('''MIL'''), ~~also known as a~~ '''check engine light''', ~~is a~~ [[Tell-tale (automotive)\|tell-tale]] ~~to indicate malfunction of a computerized engine management system~~. ~~It is found on the instrument panel of most automobiles~~. ~~When illuminated~~, ~~it is typically either an amber or red color~~. ~~On vehicles equipped with~~ [[On-Board Diagnostics\|OBD-II]], the light has two stages: steady (indicating a minor fault such as a loose gas cap or failing [[oxygen sensor]]) and flashing (indicating a severe fault, that could potentially damage the [[catalytic converter]] if left uncorrected for an extended period). When the MIL is lit, the [[engine control unit]] stores a fault code related to the malfunction, which can be retrieved with a [[On-board diagnostics#Hand-held Scan Tools\|scan tool]] and used for further diagnosis. The malfunction indicator lamp usually bears the legend {{smallcaps\|check engine}}, {{smallcaps\|service engine soon}}, or a pictogram of an engine. In the United States, specific functions are required of the MIL by [[United States Environmental Protection Agency\|EPA]] regulations.<ref>http://books.google.com/books?id=q8_vHlaJHVwC&pg=PA200&dq=Malfunction+indicator+light+OBD&hl=en&ei=h4j-TNSEFoiDOpaCvc4M&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=Malfunction%20indicator%20light%20OBD&f=false Code of Federal Regulations CFR 40 ar{Part 86, retrieved 2010 Dec 7</ref>		A '''malfunction indicator lamp''' ('''MIL'''), tambem conhecido por '''check engine light''', serve [[Tell-tale (automotive)\|tell-tale]] para indicar o mau funcionamento de um sistema de gerenciamento de motor computadorizado. Pode ser encontrada no painel de instrumentos da maioria dos automóveis. Quando iluminado, normalmente é também uma cor amarela ou vermelha. Em veículos equipados com [[On-Board Diagnostics\|OBD-II]], the light has two stages: steady (indicating a minor fault such as a loose gas cap or failing [[oxygen sensor]]) and flashing (indicating a severe fault, that could potentially damage the [[catalytic converter]] if left uncorrected for an extended period). When the MIL is lit, the [[engine control unit]] stores a fault code related to the malfunction, which can be retrieved with a [[On-board diagnostics#Hand-held Scan Tools\|scan tool]] and used for further diagnosis. The malfunction indicator lamp usually bears the legend {{smallcaps\|check engine}}, {{smallcaps\|service engine soon}}, or a pictogram of an engine. In the United States, specific functions are required of the MIL by [[United States Environmental Protection Agency\|EPA]] regulations.<ref>http://books.google.com/books?id=q8_vHlaJHVwC&pg=PA200&dq=Malfunction+indicator+light+OBD&hl=en&ei=h4j-TNSEFoiDOpaCvc4M&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=Malfunction%20indicator%20light%20OBD&f=false Code of Federal Regulations CFR 40 ar{Part 86, retrieved 2010 Dec 7</ref>

	The MIL appeared in the early 80s along with computerized engine controls. Even the earliest systems, such as GM's CCC (Computer Command Control) system had self diagnosis functionality. When the computer detected a fault, it illuminated the MIL. Up until OBDII, on most cars the MIL could output codes, when two pins on the [[ALDL]] are jumped, the light would flash the codes, for instance (blink) (pause) (blink) (blink) for code 12. Some manufacturers, such as Honda, retained this feature even after OBDII.		The MIL appeared in the early 80s along with computerized engine controls. Even the earliest systems, such as GM's CCC (Computer Command Control) system had self diagnosis functionality. When the computer detected a fault, it illuminated the MIL. Up until OBDII, on most cars the MIL could output codes, when two pins on the [[ALDL]] are jumped, the light would flash the codes, for instance (blink) (pause) (blink) (blink) for code 12. Some manufacturers, such as Honda, retained this feature even after OBDII.