AC coil

I've been following the bible; DanG144's AC troubleshooting guide.

I didn't have a way to check duty cycle at the G65 sensor but I did get 3.1VDC and 5.1VAC so I believe that's enough to call it working.

I'm at step 5 and I believe I've found the problem but want to be sure. The document states that I should see 9-9.5v at the compressor coil. Unplugged I'm getting 12.19 which puzzles me. When I plug back into the coil and pierce the wire I get the same 12.19. Weird.

I checked the resistance to the coil with the connector unplugged and got 1 which I believe shows an open (dead) coil correct?

Just wanted to be certain that voltage wasn't an issue and that I've narrowed it down to the coil before I order one.

Thanks Dan and all!

Infinite resistance is "open" - close to zero is a good reading. I think it should be somewhere around 8 ohms? Basically - open is bad, anything close to shorted across the terminals is good.

Resistance of a working coil should be right around 4ohms.

Did you check for a bad ground?
Measure from the negative side of the coil to the battery negative.
I would not want to see more then a few tenths of a volt.

Follow up;
I checked the ground and triple checked the coil (it's really hard to be sure you're onto those pins inside that plug while laying under the car)
Ordered a new coil from amazon. $27
Long story short, I spent about 2 unnecessary, unproductive hours fighting with those damn snap rings and trying to modify my crappy snap ring pliers. I really didn't want to take the turbo cooler off and that damn thing is REALLY in the way. I finally drove across town and bought a new set of pliers. $8 at Princess Auto. I realized the cooling duct inlet was still foiling my access so I heated up the pliers with a MAPP torch and put a slight curve into the jaws. Bingo, within seconds I realized I would never get those 2 frustrating hours back.
I easily tapped the pulley off with a chunk of very hard oak and a light touch with the hammer. Long story short I managed to replace the coil without loosening /moving the compressor or the turbo cooler.
Nice cold air again.
I'll include a pic of the pliers that saved the day.

Hmm... I guess I can't post attachments?

Glad you got it working.
I've fought with the wrong tools to many times myself.
Over time I bought what I needed.
That never ends.

I found it just easier to drop the compressor, rest it on a 6x6 piece of wood , use a clamp and socket to press the nut sert back into the bracket , change the coil and reinstall the compressor......way easier then fighting those snap rings while installed.