Tools Needed: Multimeter, #2 screwdriver

Time Needed: 10 min

Turn off machine and unplug from power

Remove cup tray

Remove front top panel

Remove leads to high limit

Check continuity between the poles

View of it outside the machine, you can see on the meter that there is a reading. 

If no continuity, attempt pressing the button on the switch. If still no continuity replace the switch.