Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove connector from ignition control box
Measurement:
Measure the resistance between pin 5 and pin 7 at the ignition control box connector.
Expect continuity / zero resistance.
Is the resistance measured as expected?
Expect continuity / zero resistance.
Is the resistance measured as expected?
Isolate as per TOPs P4
and refit as necessary