Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove connector CN6 from the PCB

Measurement:

Test 1:
Measure the resistance between pin 43 (black)
and pin 44 (black) on connector CN6.
Expected resistance approximately 224 ohms.
Test 2:
Measure the resistance between pin 43 (black)
on connector CN6 and a suitable earth point.
Expected resistance greater than 1 Mohm.
Test 3:
Measure the resistance between pin 44 (black)
on connector CN6 and a suitable earth point.
Expected resistance greater than 1 Mohm.