INJEÇÃO ELETRÔNICA VW G5 INJEÇÃO INJEÇ ÃO ELETRÔNICA MAGNETI MARELLI IAW 4GV - VOYAGE
ÍNDICE SONDA LÂMBDA..........................................................................................04 LÂMBDA..........................................................................................04 SENSOR TEMPERATURA DA ÁGUA..................... ÁGUA......................................... ........................................ ....................05 05 MAP e SENSOR DE TEMPERATURA DO AR (CMD).... ...................................06 SENSOR DE ROTAÇÃO................................................................................08 ROTAÇÃO................................................................................08 SENSOR DE FASE.......................................................................................08 FASE.......................................................................................08 SENSOR DE VELOCIDADE...........................................................................09
BOBINA DE IGNIÇÃO COM MÓDULO DIS.................. DIS................................... ................................... ...................10 .10 SENSOR DE DETONAÇÃO............................................................................10 SENSOR DE POSIÇÃO DO PEDAL DO ACELERADOR.................... ACELERADOR................................. ...............11 ..11 ALIMENTAÇÃO ALIMENTAÇÃO PARA POTENCIOMETROS......... POTENCIOMETROS....................... ............................ ............................ ...............12 .12 ELETROINJETORES......................................................................................12 ELETROINJETORES......................................................................................12 SISTEMA DE ALIMENTAÇÃO DE COMBUSTÍVEL...........................................13 SISTEMA DE PARTIDA A FRIO......................................................................15 CÂNISTER......................... CÂNISTER....................................... ............................ ............................ ............................. ............................. ..................16 ....16 INTERRUPTOR DO PEDAL DA EMBREAGEM................................ EMBREAGEM................................................16 ................16 INTERRUPTOR DO PEDAL DE FREIO.................................. FREIO............................................................16 ..........................16 CONECTOR OBD........................ OBD..................................... .......................... ......................... ......................... ......................... ...............16 ...16 PINAGEM DA UCE............ UCE ........................ ......................... ......................... ......................... .......................... ......................... .............17 .17 ESQUEMA ELÉTRICO...................................................................................20 ELÉTRICO...................................................................................20
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O MÓDULO DE COMANDO MONITORA AS CONDIÇÕES DE OPERAÇÃO DO MOTOR ATRAVÉS DA INFORMAÇÕES PROVENIENTES DOS DIVERSOS SENSORES, GERENCIANDO O SEU FUNCIONAMENTO POR MEIO DO COMANDO DOS ATUADORES.
A Uce é aterrada nos pinos A2 e A26, recebendo os positivos nos pi pinos nos A15 e A27 de de lin linha ha 30 qu quee sai do do fusivel F10 da Central de Fusiveis do vão do motor .E pino A4 alimentado com linha 15. O positivo linha 15 sai da chave comutadora passa pelo fusivel F26 de 5ª na Central de reles e fus f usiveis iveis do painel de instrumento instrumento..
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O MÓDULO DO MOTOR NCM ESTA LOCALIZADO NO VÃO DO MOTOR, POSSUI 2 CONECTORES.
A
B O diag diagnóstico nóstico de falhas falhas da UCE é feita por exclusão, uma vez que não é possivel realizar testes nos seus circuitos internos. Antes de suspeitar da UCE faça os testes indivv iduais de cada componente. indi
ATENÇÃO: ao desconectar desconectar o conector conector da da UCE , pode ser gerado códigos de falhas que somente serão excluidos com a pr presença esença da intervenção de d e Scanner. Scanner.
O VALOR DE RESISTÊNCIA ENTRE OS PINOS DE ATERRAMENTO E MASSA = 0 Ohms
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SONDA LÂMBDA
Alimentação do aquecedor via rele Principal, o pino A1 da UCE aterra o aquecedor em linha PWM, o pino A20 envia negativo para o sinal de referencia da sonda e o pino A46 recebe o sinal oscilante entre 100 a 900 mVolts. Sendo a resposta da sonda muito rapida com o sistema de injeção operando em perfeitas condfições, variando de 300 a 600 mVolts em apenas 330 milisegundos. A resistência do sensor é de aproximadamente 14 Ohms com o sensor aquecido.
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SENSOR DE TEMPERA TEMPERATURA TURA DA ÁGUA
DIFICULDADE DIFICULD ADE DE PARTIDA A FRIO FUNCIONAMENTO IRREGULAR DO MOTOR
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MAP e SENSOR DE TEMPERATURA TEMP ERATURA DO AR (CMD)
AR
O mau funcionamento do CMD gera erros na determinação do tempo de injeção (MS) dos eletroinjetores e no avanço da ignição. Em caso de falha do sensor o m ódul ódulo o utili utiliza za como referencial referencial o sensor sensor de posição de borboleta borboleta e temperatura do motor.
MAP OBS>:
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CAUTELA EMBORA OS TESTES NÃO IDENTIFIQUEM FALHA DO SENSOR, A ALIMENTAÇÃO DO MOTOR PODE SE COMPROMETER EM CONSEQUÊNCIA DE SUA INEFICÁCIA, POIS A RESTRIÇÃO AO ENCHIMENTO DOS CILINDROS SE ELEVA CONFORME A SATURAÇÃO DO ELEMENTO FILTRANTE. CAUSANDO QUEDA DE RENDIMENTO DO MOTOR. SENSOR MAP SENSOR SENS OR DE TEMPERATURA DO AR -100mmH -10 0mmHgg = 3,82 Volt Vol ts 29º +- 2,1 VOLTS -200mmHg -200m mHg = 3,06 Volts 48º +- 1,8VOLTS -300mmHg -300m mHg = 2,41 Volts 56º +- 1,6 VOLTS -400mmHg -400m mHg = 1,69 Volts
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SENSOR DE ROT ROTAÇÃO AÇÃO
Sensor de efeito Hall que informa a posição do virabrequim virabr equim (árvore de manivelas). A tensão de alimentação do sensor é de 12Volts efetuada pela UCE através do pino B55. O negativo é fornecido pelo pino B67 da UCE O sinal em frequencia é relativo ao RPM do motor e é sentido pelo pino B53 da UCE
SENSOR DE FASE
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SENSOR DE VELOCIDADE
Sensor de efeito Hall, com informação em frequencia para a UCE.Alimentado pela linha 30, protegido pelo fusivel F34 na Central de Reles e Fusiveis do painel de instrumento.
APROXIMADAMEN APROXIM ADAMENTE TE 15 Hz Hz EM MARCHA MARCHA LENT LENTA A Caso venha a falhar o painel não demonstrara sinal de velocidade, pois o mesmo sinal para a UCE é tambem para o painel de instrumentos. A 20km/h a frequencia deve ser em torno de 30Hz
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BOBINA DE IGNIÇÃO COM MÓDULO DIS
RESISTÊNCIA DO SECUNDÁRIO = 6 Kohms VELAS NGK BKR7ESB CABOS DE VELA RESISTÊNCIA ENTRE 4 a 8 Kohm Kohmss
SENSOR DE DETONAÇÃO Sinal Sin al de funcionamento funcionamento em frequencia Hz.
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SENSOR DE POSIÇÃO DO PEDAL DO ACELERADOR
PEDAL LIVRE P1 = 0,37 Volts P2 = 0,74 Volts
T TENSÃO DE ALIMENTAÇÃO ALIMENTAÇÃO APROXIM 5 Volts DBW CORPO DE BORBOLETA MOTORIZADO Tem a função de controlar o fluxo de ar para o motor e consequentemente consequenteme nte o seu torque instantâneo.
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ALIMENTAÇÃO ALIMENT AÇÃO PARA PARA POTENCIO POTENCIOMETROS METROS = 5 Volts Volts
ELETROINJETORES
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SISTEMA DE ALIMENTAÇÃO ALIMENTAÇÃO DE COMBUSTÍVEL
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SISTEMA DE PARTIDA A FRIO
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CÂNISTER Controla o fluxo de vapor de combustível gerado no tanque, duranrte os vários regimes de funcionamento do motor, evitando assim a poluição da atmostera por hidrocrbonetos e contribuindo para a economia de combustível
RESISTÊNCIA 25 Ohms INTERRUPTOR DO PEDAL DA EMBREAGEM
INTERRUPTOR DO PEDAL DE FREIO
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PINAGEM DA UCE A
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B
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ESQUEMA ELÉTRICO
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