Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect X4 from the PCB
Measurement:
Check resistances are approximately as per the table.
RESISTANCE DIVERTER VALVE AND HARNESS (OLD VALVE)
| Wires | Resistance |
| Pin 5 to Pin 1 | 245 Ohms |
| Pin 5 to Pin 2 | 245 Ohms |
| Pin 5 to Pin 3 | 245 Ohms |
| Pin 5 to Pin 4 | 245 Ohms |
| Pin 5 to Pin 6 | Short Circuit (zero ohms) |
Isolate as per TOPs P4
and refit as necessary