If you are looking for some good information:
Repair manuals of the RAV4:
Combined repair manuals on this location.
Visible parts inside the engine bay pointed out here
Partnumbers and more (for signed up and approved members):
http://ToyoDIY.com
Any pictures posted by me are not my original creation, i do not take credits for creating them. The original uploader does not want to be mentioned.
The repair manuals above are also not my original creation, neither do i take credits for them. I only refer people because they are very helpfull.