Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove connector X18 from the PCB
Measurement:
Test 1:
Measure the resistance between the Brown and Blue wires on connector X18.
Expect approximately 155 Ohms.
Test 2:
Measure the resistance between the Brown and Earth wires on the pump assembly.
Expect a resistance of 1 MOhm or greater.
Measure the resistance between the Brown and Blue wires on connector X18.
Expect approximately 155 Ohms.
Test 2:
Measure the resistance between the Brown and Earth wires on the pump assembly.
Expect a resistance of 1 MOhm or greater.
Isolate as per TOPs P4
and refit as necessary