When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The a/c drain is visible and somewhat accessible from below. I had my ‘99 MT in the air a couple of months ago and was able to see it and reach it with a coat hanger piece of wire. I could see that mine was open but I probed it with the wire as well.
There was a thread earlier this year where a forum member used a long needle nose pliers to squeeze his drain tube to break up debris. I tried that first but felt if I was not careful, I might pull the hose loose. Next time I pull my battery for replacement I’ll check it again. It is accessible by hand if you pull the battery and the panel that separates the battery from the engine compartment.