Old-Biscuit:
I turned it on last night and as expected it's still operating okay today. If it follows the usual pattern it will malfunction sometime tonight or tomorrow while I'm at work.
AUTO or GAS: Either way, but always while operating on gas. I don't know if it malfunctions when operating on electric - I don't normally use it that way so haven't tried it.
Spark electrode wire continuity: good
Gas valve solenoid wires continuity: good
Gas valve solenoid resistance: 92.4-92.8 ohms
I couldn't find anything on the board labeled GV or GV Ground (can't see the back of the board with it mounted though), so guessed here at what you want:
Input voltage to board: 13.4V (shore power)
Voltage to gas valve under load (gas flowing): 12.6V
The refrigerator kicked on while I was checking these things (very shortly after I'd hooked the wires back up to the gas valve after testing its resistance). That gave me a bit of a surprise but also a nice opportunity to measure the voltage (under load) at the gas valve. The refrigerator fired right up by the way. It went through two additional sets of sparking after igniting.
dougrainer:
Spark electrode: Correct, I've not replaced it, operating under the (possibly mistaken) assumption that if that is going to malfunction it would at least sometimes do so when I turn it off and back on. Thus far, it's always fired right up. I've thought the same thing about the gas valve though, so who knows... :)