Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove plastic cover from pump
Disconnect connector X3 from the PCB

Measurement:

Test 1:
Check for continuity (zero resistance) between the pump live and the brown wire marked 3 on connector X3.
Test 2:
Check for continuity (zero resistance) between the pump neutral and the blue wire marked 1 on connector X3.
Also carry out a visual inspection of the
harness between the Pump and the PCB.