The following method resolved the issue of the flashing airbag light of my Nissan Almera .
Here is the method how to reset the airbag module.
1, Switch ignition to ON and then wait for the airbag light to go out then switch the ignition off. (don't let airbag lamp to start flashing ON and OFF)
2. Wait for 4 seconds counting, like 21, 22, 23, 24.
3. Repeat step 1, and step 2 three (3) times.
4. Switch ignition to ON for 1 second then OFF.
Thanks, for this page!
DuboZsolt
December 2011