I think it's somewhere. Throttle position sensor, O2 sensor and other sensors are also installed in the car.
If you cannot access OBD, you will not be able to check all the data.
you have OBD1. If you google OBD1 pinout you will find the color of the 4 wires that go to the plug. Many times the plug was deleted and the wires taped back in the harness. You need a specific ford code reader. the plug was in different places in the original cars depending on year.