The factory shows it as just "air injection inoperative" - which doesn't necessary mean the air pump is bad. Typically the DM only scratches the surface - again you need to read the other codes as the factory suggests. The Baum book is great but it has quite a few mistakes - for example "hot film mass air flow sensor with hot wire" is complete gibberish. Hot film sensors don't have a hot wire.

http://www.startekinfo.com/manual/volumes/e3/8_4/m11.jsp