Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove connector X3 from the PCB
Measurement:
Test 1:
Measure the resistance between pins 9 and 10 at connector X3.
Expect approximately 26 Ohms.
Test 2:
Measure the resistance between pins 11 and 12 at connector X3.
Expect approximately 68 Ohms.
Measure the resistance between pins 9 and 10 at connector X3.
Expect approximately 26 Ohms.
Test 2:
Measure the resistance between pins 11 and 12 at connector X3.
Expect approximately 68 Ohms.
Isolate as per TOPs P4
and refit as necessary