No, it is not common for the PCM to go bad. Is your friend connecting the tool to the OBDII connector under the steering wheel (to the right)? If so, the fuse may have blown that powers this connector plus the accessory plug (cigarrette lighter).
Fuse #41 is what I would check first.
"Never argue with an idiot; they'll only drag you down to their level, then beat you with experience"
2007 F150 STX Supercab (4.6 2V V8), Edge tuner, factory navigation, Mark VIII electric fan conversion with flex-o-lite controller.
Last edited by Bucko; 12-13-2010 at 03:21 PM.