OBD I error scanning

[Hurshi]

Hello forum,
My car is 1989 230 E. It doesn't seem to have a check engine light. I read about how to read the OBDI codes using a led light. Is my car an OBD I equipped or does is not have it?
If yes where is the scanner connector located in my car.
If no what does the round 9 pin diagnostic socket's pins are used for and how do I extract any data out of the car's computer. This socket is located on the right side of the ABS pump.

Thanks.