Took me forever to find this buried in the literature, so I thought I'd pasted it in a forum by itself.... invaluable info if you've got that AT OIL TEMP light a-blinkin....

 

If you're driving an earlier model, by the way, you use the method of finding the black connector under the dash, and inserting the grounding pin into slot number 5 as described elsewhere.... but there is no connector in the number 5 slot on the 99's..... so you just gotta do the "Tranny Code Dance"....

Thanks for sharing.

http://www.ultimatesubaru.org/forum/showthread.php?t=117234