Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Gain access to electrical connections at pump

Measurement:

Measure the resistance (continuity) across the pump harness leads.
Connections are;
X2 connector pins 1 & 3 to corresponding connection on the pump.
Expected resistance is continuity (zero resistance).
Note.
Ensure a good connection is made or misdiagnosis will occur, connector & pin numbers are printed on the PCB.