2013 Accent won't crank - ECM Power issue
 

I am fixing my daughter's base model Canadian 2013 Accent. The other day it wouldn't crank or push start. Previously this has been dependable.On troubleshooting, I found there is no power to Pin 5&6 of the ECM 94 pin plug. According to the manual at hamanual.com, these are direct feeds from the battery.
Each pin is fed with a small red wire, and I have to assume they trace back to a fuse or fusible link. So far I cannot locate the actual, specific source of these wires, and I don't seem to have any blown fuses..
I can start the car by hot-wiring into these pins, so i know I am very close to the root problem.
Does anyone have a diagram, or can tell me exactly where these red wires originate? I would much prefer to fix this properly.

Did you check all the fuses? Engine bay and cabin fuse boxes??
Did you do a visual inspection of the wiring looms?
Sometimes mice or other vermin will chew on the wiring?
Don't forget to check relays also?

Thanks avisitor,
I have checked all the related fuses in both locations and have found no sign of damage to the harnesses yet. My problem is, without knowing where the two red wires on Pin 5&6 of the ECM come from, I am doing a blind search for a wire break. Furthermore, these two wires are still connected to each other, so this seems less like a mid- harness break than a bad connection at the source.

The schematic on hamanuals.com says they come straight from the battery. I know that is improbable, since there should be some protection. I have the fuse block in the engine compartment out and there are no damaged or disconnected red wires that size.

Does the positive post of the battery have a fuse block on it?
I know Nissan vehicle have this fuse block and when that fuse block goes out, it cost a lot to replace.
Probably not.

Hmm, then it is possible that pins 5 and 6 come from the main relay
Key on, engine off ...
Check main relay for two pins to have 12 volts and two to be low (floating) or ground.
Hyundai uses ground side switching.

Check all fuses in fuse box with test light.
Each fuse has two test point on top of fuse.
If both sides light up test light then fuse should be good
If only one side lights up test light then fuse should be blown

Solved
 

Thanks again avisitor.
I kept poking around and finally found it.
Pins 5&6 are fed from F25 in the engine compartment. That fuse, in all the docs I could find, is referred to it as the TCM ( Transmission control module). A standard transmission doesn't have a TCM, so when I couldn't see an F25 I wasn't surprized. Turns out it was just covered in so much grime that it looked like part of the fuse box. The fuse wasn't blown, but one end was corroded and crumbled when i removed it.
For future readers- here's a recap of symptoms of a blown F25:
2010--2018 Accent STANDARD trans.

• Won't crank or push start
• No Starter chatter or dimming in start.
• Clutch Starter interlock switch & ignition switch tested OK
• Starter cranks when the starter relay is jumpered, but still won't start
• Fuel pump doesn't prime
• OBDII reader won't communicate

Note that an Automatic has a TCM so I can't say what fuse it wold be for them.

Thanks for the update
And an excellent write up of the issue and solution
Am sure it will help others