KECC567RBL01 Cooktop; triple element not heating, replaced both switch and element

I have a glass cooktop (KECC567RBL01). When I turn on the triple element to any of its settings (single, double, triple), it will NOT heat up.
I have replaced both the surface heating element AND the infinite switch and tested both with an OHM meter to ensure I wasn’t replacing them with bad parts.

All other elements work fine.

What else could it be?? Please help!