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2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
If the engine starts and runs, and all your gauges work, the PCM is doing pretty much what it is supposed to, and points to a problem with the port itself, or, the wiring thereto.
Nope. Only one. Ford has their connectors under the hood. (at least, they used to....)
Reset the PCM by disconnecting the battery for a few minutes. Try your scanner again.
I believe US Federal Law states that starting with OBD II, the port has to be under the dash on the driver's side of the vehicle. A friend I grew up with, who is ASE Certified, stated that to me at one time and followed up that he HATES working on Volkswagens as VW buries the port deep under the dash.
The data link is set up with ISO 9141 protocol to receive/transmit data to/from the pcm. Pin 4-5 are grounds respectively and are obd2 required. Pin 4-5 can help troubleshoot many problems use a DVOM. Pin 7-15 is the k-L or high/low lines to receive/transmit data. ISO 9141 needs a wake up call back to the pcm on the low side inorder to receive/trans data and some scanners have a hard time with this.