Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove multi-connector from the gas valve

Measurement:

Test 1:
Measure the resistance across two left hand pins marked V2.
Expect a resistance of approximately 1.7 kOhms.
Test 2:
Measure the resistance across two right hand pins marked V1.
Expect a resistance of approximately 2.9 kOhms.
Test 3:
Measure the resistance between the left hand and centre pins.
Expect a resistance of 1Mohm or greater.
Test 4:
Measure the resistance between the right hand and centre pins.
Expect a resistance of 1Mohm or greater.
Are the resistances measured as expected?