Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect the plug from the pump
Measurement:
Measure for continuity (zero resistance) on the live and neutral wires of the pump harness.
Measure from:
Pin 5 on HV1 (brown) to left pin on pump plug.
Pin 6 on HV1 (blue) to right pin on pump plug.
Measure from:
Pin 5 on HV1 (brown) to left pin on pump plug.
Pin 6 on HV1 (blue) to right pin on pump plug.
Isolate as per TOPs P4
and refit as necessary