Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove connector 35 from the PCB

Measurement:

Test 1.
Measure for resistance across the blue and brown wires of connector 35.
Expected resistance approximately 4.2 KOhms.
Test 2:
Measure the resistance between the blue and earth wires.
Test 3:
Measure the resistance between brown and earth wires.
On Test 1 and Test 2 expected resistance greater than 1 MOhm.
Note.
A reading of O.L is acceptable as this is greater than 1MOhm.