Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove electrode lead
Measurement:
Measure the resistance across the spark electrode lead.
Expect continuity / zero resistance.
Also visually inspect the lead for good general condition.
Is the resistance measured as expected and the lead in good condition?
Expect continuity / zero resistance.
Also visually inspect the lead for good general condition.
Is the resistance measured as expected and the lead in good condition?
Isolate as per TOPs P4
and refit as necessary