I would say that's almost correct for the Fiero. You can use a paper clip shaped into a U to ground A and B. But, When inserting or removing the clip, the ignition should be OFF. Once inserted, turn the ignition ON but don't start and it will go through the described sequence of flashes. Once the loop goes back to 1 Flash-2 Flash, turn the ignition OFF and remove the paper clip.
The diagram in your link shows the diagnostic port installed upside down to what it is in the Fiero. The A and B terminals are on the lower level, passenger side of the ALDL.
[This message has been edited by fierofool (edited 01-26-2014).]