Not starting two fuses not getting power ?

I charged the battery and checked the voltage and read 12.7 put the battery in and tried starting the car. The second time prior I was working on the fuse box and got power to the IP IGN the car was cranking and the fuel gauge was working and full. Now its not cranking and the fuel gauge says empty. I guess I will go back to the fuse box take it apart and go over the areas again. I know its in that area but could be the wire that I need to trace that goes to the fuse for the PCM/ECM since that would cause the no crank or start

I checked the fuse for the PCM/ECM and its getting power. When I put the key on secondary the on position. That occurred when I unplugged the power train and pushed it in and kept pressure on it. Had a friend hold pressure while I tried starting the car. The fuel gauge worked but still no cranking. The fuel pump primed but only once. I did see a new message across the dash Engine Disabled that’s a new one and also said Eng Power Reduced. The plug that’s at the very bottom of the image that plugs in sideways

Since moving or working with the fuse block previously restored the IP IGN circuit and allowed the engine to crank, inspect the underside terminals, bus connections and connectors at the fuse block very carefully. Look for burned or discolored terminals, corrosion, terminals that have spread or lost tension, or a terminal that has pushed downward out of the connector.

I would stop using a screwdriver or paper clip to spread the fuse terminals. If a terminal has poor tension, spreading it may temporarily restore contact but can damage it further or create another intermittent connection.

From What I see in the video I would check the battery condition and the cable connections, please go over this guide it should help.

https://2carpros.com/articles/everything-goes-dead-when-engine-is-cranked/

Also, I would swap out the pwr/trn relay in the fuse panel under the hood. Let me know

Which relay?

The pwr/trn relay in the fuse panel under the hood.

Going to get me a relay tester and that short circuit tracer

Perfect, that should tell us something about the problem.

Waiting for relay tester and cable wire tracer tool to arrive. Going to take battery down to get charged and to make sure battery is good.

Yes, great idea. this should help us see what the problem is.

Yup battery was no good took charge but not giving cold cranking amps of 600 only 300 connected battery tried starting but no cranking going to have someone hold that plug to the ecm while I try starting it because the engine power reduced message is gone and so is engine disabled message is gone.

Still have power steering message and airbag safety check message but has started before with those on before but will follow up when I get another set of hands to push that plug in while I try turning the key.

Sounds good. The steering and air bag issue are separate so please make new threads.

Sure enough its the Engine Control Module Connectors the X1 and X2 connectors have to be fully pressed in back of plug but that doesn’t keep them in place. Any vibrations or bumps will lose contact real quick. Wrapping it or anything else to criss cross tie to hold it against

Good find, glad you got it fixed. Have a good weekend!