(T) Ignition coil signal

Does anybody know what is the voltage of the signal the ecu send on the Punto mk2 8v coils? (the LT side, those thin wires). Is it a gnd signal (0v), 5v or 12v?

Thanks

It is a switched earth system, if you have a coil not firing (you have a misfire on two cylinders) it is due to either a wiring fault between the ecu and that coil (never had it), a faulty coil (never had this on mark 2), or a faulty ecu, (changed quite a few).

No, no misfiring (Thanks God), I am trying to install the Greddy Emanage and everything is working except the ignition cause I do not know the signal.

So the ecu sends a 0v signal? ie, grounds the coil that needs to be fired right?

Yes you have a 12v supply to both coils and then they are switched by the ecu to earth to collapse the magnetic fields and fire.

Thanks alot, I will try it as soon as everything arrives.

Btw, without switching on the car do you know which one of the wires is the static 12v and which is the 0v ecu signal pls?

Thanks again.