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Thread: Injector and driver injector

  1. #1

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    Injector and driver injector

    Hello everyone,

    I have a stupid question, but it's a question!

    I would like to have your opinion on the injector and the voltage. I have noticed on my daily Mitsubishi galant (4G63 EA2) a strange problem. When I disconnect the injector plug and measure with the voltmeter, I find 12 volts.

    I explain, when I put the ignition on and I put the voltmeter in the 2 pins of the injector connector, i had 12 volts. What I don't understand is that normally it is the ECU that controls the grounding.

    So is it normal?

    Thank's in advance

    Saf
    3000GT 1430awhp and 1132nm twin 6466CEA @ 44 psi + Galant VR4 type-S 701awhp @ 1.7 bars 6466CEA + Galant GDI to 4G63 ... In progress

  2. #2
    Confused's Avatar

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    Yes, almost every item controlled by the ECU has an ignition switched power feed, and the ECU controls the ground signal.

    Injectors, boost/fuel solenoid, etc.

    In fact, most of the car uses ground-switching - all the lights have a permanent power feed, and you switch the ground.

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