Follow each step carefully.
Switch off the power supply to the washing machine.
Unplug the power cord from the outlet.
Adjust the multimeter to the insulation resistance setting.
Connect one probe to the washing machine frame and the other to the power cord terminals.
Read and record the insulation resistance value displayed on the multimeter.
Confirm that the resistance value is above the minimum acceptable level (typically 1 MΩ).
Plug the power cord back into the outlet after testing.