Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the 7 way connector from the PCB
(orange, blue and brown wires)
(orange, blue and brown wires)
Measurement:
Test 1:
Measure the resistance between the brown and blue wires.
Expect approximately 36 ohms.
Test 2:
Measure the resistance between the brown and a suitable earth.
Expect a resistance of 1 MOhm or greater.
Are the resistances as expected?
Measure the resistance between the brown and blue wires.
Expect approximately 36 ohms.
Test 2:
Measure the resistance between the brown and a suitable earth.
Expect a resistance of 1 MOhm or greater.
Are the resistances as expected?
Isolate as per TOPs P4
and refit as necessary