Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the plug from the spark generator and the 8 way plug from the PCB
Measurement:
Test 1:
Measure the resistance of the brown and blue wires to check their continuity.
Expect zero resistance/continuity
Test 2:
Measure the resistance between the brown wire and earth, and then measure the resistance between the blue wire and earth.
Expect open circuit on both tests.
Also check the condition of the harness visually.
Measure the resistance of the brown and blue wires to check their continuity.
Expect zero resistance/continuity
Test 2:
Measure the resistance between the brown wire and earth, and then measure the resistance between the blue wire and earth.
Expect open circuit on both tests.
Also check the condition of the harness visually.
Isolate as per TOPs P4
and refit as necessary