I have a 1991 Escrot Wagon LX with a 1.9

I have a code reader that I hooked up to the car. It said the BARO/MAP sensor is out of range. I figured I would simply replace the sensor. Started to search for the sensor in my Chilton, but the book does not reference it - AT ALL!

I did go to AutoZone and the sold me one that is for the car so it must have one.
I took the part home and started searching the engine compartment. After a few hours of searching I was unable to find anything.

If anybody can shed an light on my sensor situation, please respond back ASAP!