I haver a 2014 Civic with the keyless entry, passenger side works fine, drive side no longer working. Does anyone have any information on whatever is located in the door that controls it? Any diagrams? I searched google and can't seem to find much info on it.

 

After 2011, Honda stopped making physical manuals. Now you have to get information from Honda express service:

https://techinfo.honda.com/rjanisis/logon.aspx