Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove electrical connector to spark generator and connector X21 from the PCB

Measurement:

Measure for resistance across each wire of the spark generator harness as listed below:
  • Pin 4 (blue lead) X21 and pin 2 spark generator connector.
  • Pin 1 (brown lead) X21 and pin 1 spark generator connector.
  • Pin 2 (black lead) X21 and pin 3 spark generator connector.
    Expect continuity / zero resistance on each wire.
    Also visually inspect the condition of the harness.