Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Disconnect connector A3 from the PCB
Set clock to OFF position

Measurement:

Test 1:
Measure the resistance across connection 2 (black lead) and connection 4 (black lead) at the disconnected connector.
(Resistance should be open circuit.)
Test 2:
Set clock to ON position.
Measure the resistance across connection 2 (black lead) and connection 4 (black lead) at the disconnected connector.
(Resistance should be closed circuit.)