Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the harness from the main PCB to the user control PCB
Measurement:
Test each wire for short circuit from one end of the harness to the other.
Each wire should be short circuit.
Also check the harness and connectors for condition.
Note:
The wires from the harness cross over,
trace wire across the harness to ensure
continuity check is completed on the correct pin.
Each wire should be short circuit.
Also check the harness and connectors for condition.
Note:
The wires from the harness cross over,
trace wire across the harness to ensure
continuity check is completed on the correct pin.
Isolate as per TOPs P4
and refit as necessary