becareful which video
different years use a different controller that uses a diferent switch
some were normally open and closed when the magnet is applied
some are normally closed and open when the magnet is applied
all it does is send a signal to the controller saying to open the door
to test the switch, for get volts
use continuity
disconnect the switch wiring
set your meter for continuity, it will beep when you touch the probes together
connect to the wires coming from the switch
open and close the door
if it beeps on an off the switch works
if it never beeps, or never stops the switch is bad
i had a bad switch once, and bought the wrong one by mistake and had to buy another to get the correct one
if you replace the control board
buy a new switch that goes with that board
it could save a lot of hassle