The activation wire on the throttle body should be green/violet. Should is the key word here... I have had a similar problem with another car and found the brown wire in the harness at the throttle body to be the trigger than the nmu needs to see. Aslo, have you installed the inline resistor and followed the programming instructions? Most problems that I see are in the user programming. In the last 10 or so years I can only remember 3 of these nmu boxes going bad and two of those were internal leaks on the solenoids. I would refrain from tying this into the pedal just yet, especially if the manufacture can't give you clear directions.