1997 Expedition, 147K. Pulled in the driveway and the engine quit. Engine will crank but won't start. When you go key on, the THEFT light goes on for 2 seconds, then flashes fast for 1 minute, then flashes code 16. Neither key will start it. I can't seem to connect with my OBDII reader. There is a single wire going to a clip (broken) that holds a contact into the lock cylinder, but that just sounds the key in chime. Can anyone help troubleshoot this? I'm about the replace the PATS transponder, assuming power and ground checks out. The only other option I have is to have it towed to the dealer and bend over. Thanks.