Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove electrode assembly from the burner door
Disconnect lead from the spark generator

Measurement:

Thoroughly check the spark electrode and lead for wear, contamination, cracks and damage, confirm electrode gap is 5mm + 0.5mm
Measure the resistance of the spark electrode from end to end (see note 1.)
Expect continuity / zero resistance.
Note.
1. If required clean the electrode with a small brush (not with a wire brush) or emery paper.
2. Refer to ADAPT regarding any gasket replacement requirements.