  We prove that the complement to the caustic of a stable Lagrangian map germ
of type $E_6^\pm$ has seven connected components, six of which are contractible
and one is homotopy equivalent to a circle. The inverse image of the
noncontractible component under this map has three connected components. The
restriction of the map to one of them is a two-sheeted covering; the
restriction to each of the other two is a diffeomorphism. The table of
adjacency indexes of type $E_6^\pm$ monosingularity to multisingularities of a
generic Lagrangian map is given.
