using "fault memory" for trouble shooting

["C. H. Lemon" <br00206@bingsuns.cc.binghamton.edu>]

Hello.....

Has anyone out there had experience activating the "fault memory"; you 
know...you insert a fuse into the fuel pump relay for 4 seconds, remove 
it  and the idiot light which consists of an engine icon and the word 
"check" flashes out a code which reveals the status of "coded" 
systems.....  Well, if you have used this feature, maybe you could answer 
a question I have.....

OK...When you initiate the check, I'm assuming that you have to check 
every system, that is "coded", in a preset order by inserting and 
reinserting a fuse into the relay.  So, you have to test every system in 
order, even if no faults were recorded for some systems.  Eventually, 
if faults were recorded, you will get an "error" code.  In other words, you 
have to keep inserting and reinserting a fuse into the relay until you see 
an error code, if fault was recorded...  Is my assumption correct???  Or 
does the fault memory display only codes for systems that are 
malfunctioning?  Bentley is not too clear on the procedure.  

The "check" light in my '88 90 comes on occasionally.  When I've tried to 
test the systems, all I get out of the computer is 4-4-4-4 (no fault).  This 
occurs, however, only after a couple of fuse insertions/reinsertions into 
the fuel pump relay; have I not finished the systems check??  If so how many 
times do I have to plug the fuse into the relay to test all of the systems?? 

Any thoughts will be appreciated

Chris