Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect connector X3 from the PCB
Disconnect the plug from the pump
Disconnect the plug from the pump
Measurement:
Check for continuity (zero resistance) on pin 3 at X3 on the PCB to the neutral at the pump plug.
Check for continuity (zero resistance) between pin 4 at X3 on the PCB to the live at the pump plug.
Inspect the harness and connectors for good overall condition.
Check for continuity (zero resistance) between pin 4 at X3 on the PCB to the live at the pump plug.
Inspect the harness and connectors for good overall condition.
Isolate as per TOPs P4
and refit as necessary