Removed the heater control valve. My understanding is that the valve is supposed to be fully open when it is disconnected, but mine is fully shut. Can anyone confirm that the heater control valve is normally open?

Also, is there any way to test the valve? I get consistent resistance readings between pins 1-2 and 1-3. My understanding is that the IHKA sends a PWM signal to pins 2 and 3 to close the valve to a particular setting.