How do you check your defrost switch?

To check your defrost switch, first, locate it in your refrigerator or freezer, typically found near the defrost timer or control board. Use a multimeter to test continuity by disconnecting the switch and placing the probes on its terminals; a reading of zero ohms indicates the switch is functioning properly. If there's no continuity, the switch may be faulty and should be replaced. Always ensure the appliance is unplugged before performing any tests for safety.