I had this code but do not have a good EGR schematic to trace this problem
to a possible faulty component.  I don't want to shot gun this with a new
EGR valve when it could be a leaky line or sensor issue.  Any good places
for schematics??

We have a '97 Protege with 105k miles that began making a rubbing noise in
the rear whenever taking a sharp turn.  The noise does not correspond
to braking.  Any ideas?