Set Appliance State:

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

Measurement:

Test 1:
Measure the resistance between the brown and blue wires at the pump connector.
Expect a resistance of approximately 160 Ohms or greater.
Test 2:
Measure the resistance between the brown and earth wires at the pump connector.
Expect a resistance of 1 MOhm or greater.
(O.L is acceptable because this is greater than 1 MOhm)
Are the resistances measured as expected?