2014 No 12v from 7 pin battery lead pin 4

I am not getting 12v from pin 4 Aux 12v charging on the 7 pin connector on the rear of my 2014. I have checked the fuses and relays under the hood. I am at wit's end and looking for any advice on what I could be missing. All other functions of the 7 pin work perfectly. Just not getting power for the trailer battery from pin 4.

 

Are you talking about the Trailer Plug?

 

Also, what pin are you referring to as pin 1?
On the cover that flips down over the plug, there should be a diagram.
What pin is it labeled as?

 

Do you have the truck on and running while checking the 12v at the trailer plug?

 

I put pin 1 but that is the ground it was supposed to be pin 4 - the top right pin on the bumper side. I am checking while the car is running.

 

Top right PIN 4 - Checking while running

 

Yes while running

 

You checked this fuse?

 

Check 10A IG1 #2 Fuse
Check the 30A Batt Chg Fuse
Check the Batt Charge Relay.

 

Yes I double checked it today. This is why I am scratching my head.

 

I have not checked 10A IG1 - thanks

 

There are 2 different IG1 Fuses.
You are looking for IG1 #2

 

IG1No2 feeds a whole bunch of stuff. Just some of the things that won't work if it's blown. 4WD, E locker, Temp/compass, and 110V inverter, in addition to the trailer batt chg.

 

Well it was not this fuse either. I did check and I am getting 12v at each fuse and relay.

 

the dash goes nuts if it is blown. I pulled and forgot to put back in and dash looked like the 4th of July.

 

All left is power after the Relay.
Have you swapped the relay just to check and be sure it isn’t the relay?

 

I did a swap with the horn relay and it worked as expected

 

that is the one I checked

 

Ok, you are going to need to trace the Gray wire from the relay going to a connection behind the left kick panel. From that connection it leaves (Gray wire) and goes to a connection plug behind the Trailer Socket.
And comes out of that plug as a Black wire to the Trailer Socket Pin.

Now, all I need is Muddin to confirm this and you should be well on your way to fixing it.

 

Here is a good post with pics of the wires @ the Trailer Socket.
https://www.tacomaworld.com/threads/7-pin-trailer-connector-wiring-diagram.455153/