Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to AC Volts Set meter to measure AC Volts
Move wire back to connection 5 if you have not already done so
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:

Measure the AC voltage between pin 5 at the spark generator and a suitable earth point.
Expected voltage is approximately 100V AC.