Was it working before? Did the pads rip from trying to remove the component? Make sure the component is installed correctly. Check your continuity from the pin to where it is supposed to go. See if you are getting power to the correct pin.
53. The MAP sensor, U2 {MPX4250AP), is next. It mounts on the under side of the PCB, with the vacuum port facing the DB37 connector end of the PCB, and the markings on the sensor facing away from the PCB so you should be able to read the "MPX4250AP" marking when the sensor is installed. The leads are bent toward the PCB, and soldered on the top-side. The notch on the lead indicates pin #1 - this corresponds to the square pad on the PCB.