I was trying to find the location of diagnostic plug on my Volvo with no success. I have learned that pre 1996 models have OBD1 system and new ones OBD2. But where is the plug?

Could it be it doesn't even have OBD because it uses a Renault engine?
I have googled fearlessly but what I found was no use. I don't like opening new topics but I'm desperate. I would appreciate any help.

Thank you.