That's only the procedure once you get the HVAC unit out of the car. In order to get to that point, you have to remove the dash. Look at the very first paragraph where it refers you to the procedures on how you remove the HVAC assembly.

See this eight part YouTube series:

They finally get to the point where your Alldata starts at the end of part 6.

 

Why do you think it’s the evaporator?

What testing have you done

 

Not too much as far as extensive testing, Winter is almost here in New England so it's not at the top of my to do list. I'd be thrilled to find out it's not the evaporator. I did recharge the entire system with refrigerant this summer, and while it was ice cold for about a day - the air came out hot the next.

 

You really should split up the AC system and vacuum test it before drawing any conclusions. Your evaporator core could be fine and you might not be actually fixing the problem - see my experience about the job posted recently.

Your leak could be any number of pipes, joins or of course a component like the Compressor, expansion valve or condenser.

Test first and save time and money, also aim to replace the drier