Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove lower facia panel
Disconnect the connector ST16 situated at the bottom R/H side of the PCB

Measurement:

Test 1:
Measure the resistance across the brown wires (1 & 2 on R/H) on the disconnected connector, approximately 80 Ohms should be present.
Test 2:
Measure the resistance across the purple wires (7 & 8 on R/H) on the disconnected connector, approximately 80 Ohms should be present.