So it's bad? I don't understand and I'm having a hard time :/ for those who know English... It's easy but it's the hardest thing to learn

IIRC, Bert is correct...Pin #56 should have voltage on it when the key is on, but the car (actually the fuel pump) is not running. Once the car starts (or the fuel pump is activated), that pin should go to ground and not have any voltage on it...or at least very little.

Thanks! So the Ecu is most likely at fault and needs replaced

Oh one more thing please and you can close the thread. Can you explain why this problem won't let my car start? Thanks for everyone's help! So much

If the fuel pump side of the MPI relay isn't energizing, your fuel pump won't come on.

Here is a diagram of the MPI relay, in a thread with a lot of good info. As Steve explains in that thread, you can apply 12v or ground to different pins on the MPI relay to manually test if the relay, ECU, or wiring is bad.

There's fuel going into the injectors tho, so wouldn't it be ok?

I can't say whether your ecu is still good or not because I don't know the voltage you are measuring on the pin. You really need a multimeter to measure the actual voltage on that pin. A screwdriver light might not work because the resistance of the coil could prevent the light in the screwdriver from coming on even if it were really 12V. A multimeter is really the only way to know what the voltage actually is.

The reason it could be the ecu is because pin 56 is the transistor that keeps the fuel pump portion of the MPI relay activated and powered. The starter relay first activates the fuel pump, but after the car has started the ecu has to take control and keep the fuel pump powered. If pin 56 does not got low (about zero volts) the relay will just shut back off and the fuel pump will lose power and therefore your car will stall out. You'll usually hear the relay click and then the car will die.

It could be something else as well, but measuring pin 56 will tell you for sure if this is functioning correctly without having to swap ecus. Hope this helps.

You were very helpfull! I will try this with a meter, can I add you as friend?