How to replace expansion valve

I was wrong that there was no orifice on my car, only have expansion valve instead of it. Where the expansion valve located? It is said to remove left lower quarter trim panel first by service manual.
Is it located on the front or rear of the car?
Is It locate at front of dashboard that I have to remove dashboard? Thanks for your help and instruction. What is technical difficulties?
If it contained these compartment?
Thanks!