Injector and driver injector

[SAF68]

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

[Confused]

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.