Greetings Mg, try this, pass the key but do not get ready, now with some screwdriver test activate the starting donkey solenoid directly, if it starts your problem can be in the switchera of the key, possibly when it is starting it removes the current to the ECU and obviously it does not detect that the engine is starting. You have noticed that in some air conditioning vehicles do not even light the blower when the engine is off even with the key to start, it is an electromechanical measure to not put a load at the time of starting, I hope it helps you, luck.