ECU main live?

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28-02-2010, 03:56 PM

WongRS

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ECU main live?

does anyone know if the main power source to the ECU on a 1990 4x4 is permenant or ignition switched?

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28-02-2010, 04:13 PM

oldford

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Ignition switched. That powers the main relay which provides the power to the ecu.

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28-02-2010, 04:20 PM

WongRS

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thank you!

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28-02-2010, 04:35 PM

martysmartie

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As said switched ignition there is no power goes to ECU at all without ignition.

Martin

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