Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove X18 from the PCB
Measurement:
Measure resistance across the pins at the disconnected connector X18 (pump connector) as listed in the table.
The resistances should conform approximately to the table below:
Notes:
1. Ensure connector is held in the correct orientation as shown in the image.
2. Wire colours may vary but the test points remain the same.
The resistances should conform approximately to the table below:
| Pins | Resistance | 2 and 5 | 50 Ohms or greater |
| 1 and 4 | 100 Ohms or greater |
Notes:
1. Ensure connector is held in the correct orientation as shown in the image.
2. Wire colours may vary but the test points remain the same.
Isolate as per TOPs P4
and refit as necessary