Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove connector X16 from PCB
Remove the harness plug from the pump
Remove the harness plug from the pump
Measurement:
Test 1:
Measure the resistance of the Neutral wire of the pump harness across the centre connection of the pump plug to connection 1 (blue) on the disconnected connector X16.
Test 2:
Measure the resistance of the Live wire across the furthest left connector of the pump plug
and connection 2 (brown) of the disconnected connector X16.
Measure the resistance of the Neutral wire of the pump harness across the centre connection of the pump plug to connection 1 (blue) on the disconnected connector X16.
Test 2:
Measure the resistance of the Live wire across the furthest left connector of the pump plug
and connection 2 (brown) of the disconnected connector X16.
Isolate as per TOPs P4
and refit as necessary