Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Disconnect potentiometer plug from PCB

Measurement:

Test 1:
Set potentiometer to maximum (6)
Measure the resistance between the pink and yellow wires.
Resistance should be approximately 50Ω or less.
Measure the resistance between the white and yellow wires.
Resistance should be approximately 10kΩ.
Test 2:
Set potentiometer to minimum (0)
Measure the resistance between the pink and yellow wires.
Resistance should be approximately 10kΩ.
Measure the resistance between the white and yellow wires.
Resistance should be approximately 50Ω or less.