How to use AutoMap : 

Press SQUARE+SELECT to toggle the map on/off. Once in the map, the
following apply:

DPad = scroll around the map
X + DPad = scale the map
TRI + Up = toggle all walls/door shown (walls are dark gray if unseen,
gray if seen; doors are blue if unseen, lite blue if seen)
TRI + Down = toggle all secret walls shown (in brown if unseen, yellow if seen)
TRI + Left = toggle all items shown (in yellow)
TRI + Right = toggle all enemies shown (in red)