Dual element on glass cooktop acting strange

I believe that my switch for my dual burner is bad. The element heats but I can not control the level of heat. I also can’t turn it on and off. It just stays on all the time.

I am trying to test the continuity of the dual switch terminals but they are not listed the same as my other single burner switches. (H1, H2, L1, L2, P) How do I test this switch? The dual is labeled 1,2,3,4,5,6,N!