Hi everyone! I have a problem with my ECU. The problem is that P1122-Car don t throttle at all. I managed to measure the pins on the Throttle body and I have some result.

Pin 1-Earth
Pin 5-Power supply 5V
Pin 1-2 -variable voltage 0-5V
The problem is at Pin6, on this i have constant 5v It is normal? I think no because i read on this forum that Pin 1-6 I need to have a variable voltage 0-5 V ?
It is the ECU problem ? I have to buy a new ECU?

Sorry for my bad english
FIat Stilo 1.6 16V 2002 3doors

I change the ECU and I have the P1122 error, Car not throttle above 4000rpm. It is the throttle body or acc pedal ? Someone help me ?

If there is no shorts it could be a faulty electric throttle control actuator