OK, good news/bad news.
The shop manual goes into exhaustive detail on troubleshooting airbag codes (almost 100 pages). You'll need it handy when you start going through it because the steps have to be done in a sequence (according to the manual).
Do you have a copy of the manual? If not, how can it get it to you (150MB)?
It starts on pdf page 13482 and ends on 13577 (Section 9J & 9J1).
It looks like this thing was designed by NASA.