This is the best place to check it so you can eliminate the possibility of wiring problems. This is what I saw. Based on this, and after checking logic powers and grounds I recommended a logic module along with the tune work and coil. After the work was completed this is the repair verification along with the fact that it ran again. Why digging crud out of the coil and plugging in the wire killed the car who knows.
Cars are weird.
The customer came back later with a cold run problem and another scan showed the MAP code again but the MAP checked out fine again. I blew out the line and that solved it, at least temporarily. The customer wondered if the logic module was necessary. One of the advantages of a digital scope over an analog is the ability to capture, store and download into a PC and print waveforms. This can be quite valuable at times to show a defect to a customer or prove a repair.