Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove air intake
Disconnect plug from the spark generator

Measurement:

Test 1:
Measure the resistance between the red wire on the plug to the spark generator and the red wire on X3 marked 10.1.
Test 2:
Measure the resistance between the blue wire on the plug to the spark generator and the blue wire on X4 marked 10.2.
Expect continuity (zero resistance) on each test.