Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove connector CN16 from the main PCB
Remove connector CN7 from the interface PCB
Remove connector CN7 from the interface PCB
Measurement:
Measure the resistance of each of the wires in the flat harness.
Expect continuity on each wire in the harness.
Also visually inspect the harness for general condition and any damaged insulation.
Note:
With both ends of the connector orientated the same way the pins on each connector correspond, i.e. top left on one end corresponds with top left on the opposite end of the harness (as illustrated with the red arrows)
Expect continuity on each wire in the harness.
Also visually inspect the harness for general condition and any damaged insulation.
Note:
With both ends of the connector orientated the same way the pins on each connector correspond, i.e. top left on one end corresponds with top left on the opposite end of the harness (as illustrated with the red arrows)
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Isolate as per TOPs P4
and refit as necessary