OBD2 connector not getting power?

I will check all of the fuses in the cabin. I’ll pull each fuse out and visually check it. I can tell you that all the fuses are good.
I should advise you that the Sentry Key Immobilizer System light came on and my car would not start. I had the keys reprogrammed. “So, the OBD 2 connection was working.” I tried to start the car after the keys were programmed and the SKIM light came back on. The locksmith checked to see if the PCM had the vin number in it. The PCM did not register on his diagnostic tablet. I bought a PCM that was programmed to my car with the Immobilizer and that did not work. So, I returned it.
Would you happen to have a grounds diagram for all of the grounds on the Jeep? I saw a video on YouTube and the mechanic had one and he was going to test all the grounds. I checked the grounds visually in the engine compartment that are attached to body of the engine bay. I have a pdf 2003JeepKJServiceManual. Pdf that I use. I only have the one diagram that is attached, and I guess I’ll check those grounds if I can find them. I have been using this pdf for assistance. 8W is the chapter where I'm working from. I have watched Ryan's video a few times on testing the OBD 2 and his was a blown fuse. I should be so lucky...
I have worked with you guys before. If you can find those correspondence, you may want to look over them and you should be caught up.

First, I attached my OBD 2 connecter to its port and I got nothing on the screen. Then I checked all the fuses again and none were blown. I even changed a few fuses with my spares. Ok. So, fuses that did not light up are 4, 5, 9, 23, 26, 27, 30, and 33. Then I checked the OBD 2 port to see if pin 16 worked or not to 12v. It didn’t work. Then I pushed the wire harness in, so all pins were visible. I checked the ohms on pin 4, 5, 6 with pin 16 and the voltmeter was showing 4? Ohms.

All of the fuses are good. Perhaps you can see them in the photos. I actually swapped it with the one diagonal to it. Do you have a diagram of the grounds?

What is a PDC? Is it a Power Distribution Center? That means the entire fuse box under the hood, next to my battery even though the small fuses do work. These are all the grounds for my jeep. Is there a way to be certain about the PCD? Sorry, which image below are you referring to? Not the ground diagrams. I wouldn't even know how to get going on those diagrams yet.

Do you think we could speak on the phone?

I checked for power with the Cen-Tec multimeter and there was no voltage. Then I put the dial to 200A just to see if I got a reading on the amps and no reading. Oh, I had the key in the on position as well. I'll go out and try it with the screwdriver light with the key in the on position.

I like the last photo here, it lights up. The bottom pin came on and the top pin did not.
So, would that make the PDC okay? I sure hope so.

Oh, by the way I don't know how to use the wire testers. I wouldn't know if I was using it correctly or not. No confidence.

Ken,

If the fuses indicate that they are good, then the panel would be good also. Where should I start checking the wires? The wires are my downfall. I did go over the two links you sent, and I haven't been able to check the wires yet. It's been cold and raining here. I plan on checking something under the hood today. If you could advise as to what or where I should start checking that would be great.
Ah, do you by any chance know where I can drain the fuel from the engine bay? I would like to get rid of some of the fuel because it’s getting old. I can't do it from the gas cap area because it's blocked. The only thing I found on YouTube was replace fuel filter.

I'm sorry to ask you this again, is there a way to get the full diagrams that you sent me earlier? I can’t seem to see the bottom and top of them. Thanks very much.

I checked the OBD2 pins 4, 5, and 16. 4 and 5 are ground and 16 is power 12V. I got a reading of 4.21 from pin 16+ and I check it with pin 4, 5-. So, what does that mean? I have a little bit of power coming to pin 16. I also took the 2 screws out that hold the OBD2 and checked the wires in the back of it. I didn't see any broken wires there. In fact, they look new.

Hello Ken,

I have this in a PDF KJ Services Manual. I was wondering if you could tell me which diagrams you sent to me. If they are in this Manual. I can't seem to attach the pdf file for the manual. If I knew what pages of the diagrams you sent me, it might make things easier for me. This is the manual I'm looking at and you can download it as well. http://www.colorado4wheel.com/manuals/Jeep/KJ/. The battery is a little above 12.5 volts. I also charge it now and then, so it remains good.
thank you.

Hello Ken,

Thank you for sending these two diagrams. You had previously mentioned that you have to send the diagrams divided due to their size. How should I put them together, meaning does page two go under page 1 or the side as you sent them. Also, if you could advise the same for the previous diagrams you sent that would be great.
Thanks again Ken.