Where is the A/C expansion valve located for a 2003 Toyota Sequoia SR5?

What is your question?

The air conditioning system is full of freon but it only blows out cool air (not cold). We can see freon moving through the drier so I think it's the expansion valve. Is the valve located behind the glove compartment, or is it inside the A/C evaporator at the front of the engine?

What makes this problem better or worse?

Nothing. The problem is consistent.

How long has your 2003 Toyota Sequoia had this problem?

A few weeks.