Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect connector X9 from the PCB
Measurement:
Test 1:
Measure the resistance of the spark generator and harness across connections Live (brown) and Neutral (blue) of connector X9.
Expected resistance Open Circuit.
Test 2:
Measure the resistance to earth across Live (brown) to a suitable Earth.
Expected resistance greater than 1 MOhm.
Measure the resistance of the spark generator and harness across connections Live (brown) and Neutral (blue) of connector X9.
Expected resistance Open Circuit.
Test 2:
Measure the resistance to earth across Live (brown) to a suitable Earth.
Expected resistance greater than 1 MOhm.
Isolate as per TOPs P4
and refit as necessary