97 XJ 4.0 Auto 204k miles

Car starts, runs, shifts without any issues. Went to get it inspected and P1694 P1698 OBD codes popped up (I also get the P700 code now when I put the reader on).
I did a search and found some old posts with a lot of great diagnostic info. From what I can see, all the tests checked out good:
At the DLC, CCD(+) and CCD(-) voltages were ~ 2.4 volts
DLC pins 3 to 11 read 60 ohms
PCM plug C3 pins 28-30 read 119 ohms
Continuity between PSM C3 harness pins 28 and 30 to their corresponding DTC pins is good.
Continuity between PCM C3 harness pins 28 and 30 to the corresponding pins on the TCM harness is good.
I also cleaned the grounds at the coil mount and re-seated the instrument cluster.
Also got another TCM , no change.
Can it be the PCM? Is there any other test I can do?
One thing that I didn't see in any of my searches - when I clear the codes, the CEL never comes on by itself in normal driving. It only turns on when I put the scanner on and pull the codes.
Thanks in advance for the help. I can't pass inspection without getting this figured out.

 

btt

 

Double check the actual connectors in case the pins "spread". I've had issue on my XJ and other vehicles where continuity/voltage etc, looked good when probed with my meter, but the pins didn't make contact when I reassembled the connector.

I read you cleaned the grounds but did you spray some cleaner into all of the connectors? It doesn't take much corrosion to break the circuit whereas probing with a meter can get through.

 

Thanks - I hit the PCM and TCM connectors with contact cleaner (they didn't really look corroded). Still the same.
Is there a way to test the PCM?