i can't find any info for a 97 heated seats but did find for a 99. i have stuff for US and Canada models.
for a 99 there is one common fuse, fuse #2 30 Amp in the battery fuse box.
i hope this helps. also, what is the 10th digit of the VIN?? should be V for a 97.
you'll probably need to use a test light and check each fuse.