Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove connector CN10 from the PCB
Disconnect the electrical connector from the pump assembly

Measurement:

This test can be difficult to carry out with both connectors removed, therefore it is advisable to wedge the pump connector somewhere suitable for ease of testing.
Test 1.
Measure the resistance between pin 6 on the
pump connector and pin 2 on connector CN10.
 
Test 2.
Measure the resistance between pin 2 on the
pump connector and pin 3 on connector CN10.
 
Test 3.
Measure the resistance between pin 4 on the
pump connector and pin 1 on connector CN10.
 
Test 4.
Measure the resistance between pin 3 on the
pump connector and pin 4 on connector CN10.
Expect continuity / zero resistance on each test.
Also visually inspect the condition of the harness.