Those are LIMIT switches, they STOP the motor from running when the wing gets to the upper or lower physical limit of travel. You use an ohmmeter to determine if they are opening and closing properly.
The switches should have labels on the pins:

NC- Normally closed, connected to "C" when not pressed,open when not pressed.
NO- Normally open, not connected to "C" when not pressed but connected to "C" when pressed.
C- Common

They send grounds to the BCM to tell it what position the wing is in. Remember, the BCM operates the wing, based on presses of the console switch or based on speed data from the brake controller. You wont likely fix this without the service manual and understanding how it all works.