Water Leak - Somewhere

#1
I have a 2010 Toyota Corolla S. For a few days there has been a sloshing behind the dash and a large puddle forming in the passenger side floorboard. I have read a lot of posts/forums describing the same issue, and I feel like it's highly possible this is caused by a clogged A/C drain plug.

I'd like to try for myself to fix this, but considering how I'm no where near to being a mechanic, I would like to try to not tear up anything in the process ;) That being said, I can't find much information on where exactly this plug/line is located in a 2010 Corolla. I've searched images and descriptive posts, but most don't cover my exact model. Any helpful suggestions?

Thanks in advance!
 
#2
Jack up the car and place jackstands underneath. Look along the firewall on the passenger side, and you'll see a rubber tube sticking out from the firewall. That is the drain.
 
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