Did I understand you correctly? Your question is, what is S24 / 1 (pin 1 and pin 3) for?
If the air outlet (top / bottom / middle) is correct, you may not need this component. if not: This part is a sensor which position has the flap for air distribution (under the glove locker).
If the air outlet (top / bottom / middle) is correct, you may not need this component. if not: This part is a sensor which position has the flap for air distribution (under the glove locker).