Maybe add...
3. Follow the Auto Trans Initial Learning procedure. (LINK)
oh, and that linked procedure (above) only states the battery Neg needs to be disconnected for 5 seconds, do we really need it disconnected for 30 minutes?
5 seconds should be fine, many manuals seem to give a variance of up to 30mins on many cars for ECU's to lose their memory. I am not an expert, so went for worst case .