Haynes manual for Honda Accord 90~93.. Chapter 10-10 and 10-11 has how to... removing the steering wheel with airbags..

Call up the Honda Dealer and ask about airbag control unit... I am not sure but honda guy might be right.. Maybe you have to replace them.

Here is the link to ebay auction.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2418910929