This is posted in the towing forum too but I thought I might get the attention of someone here that doesn't go to that forum. I gotta get this fixed as I leave for florida on the 31st. Ford built in brake controller. No brakes on trailer.

Squeezing the brake controller gives me battery voltage to the trailer brakes and the brakes work.

Pulling the stopper on the breakaway switch gives me battery voltage and the trailer brakes lock.

Pushing the brake pedal gives me nothing and no brakes on the trailer.

I've checked the fuse under the hood and both fuses in the cab. All are good.

I am open to suggestions. Thanks

 

Possibly a brake lamp switch, it uses one on the pedal with 4 wires.
that would be another place to check. Does the truck have working stop lights? I found fuse 31(5a) to be inline between the brake light switch and the trailer brake controller. (2012 schematic)

 

What is the gain set on the trailer brake controller? Page 101

Did you read up on the Ford TBS in your owner's manual? Page 191

See page 90 about what you set the brake mode?

Electric or Electric Over Hydraulic



you can download a copy here

http://www.fordservicecontent.com/Fo...US_10_2013.pdf

 

Did you check fuses in the BCM F31 and F35?

Did you check the fuse under the hood F22?

Now days they do not use the simple brake lamp switch but use input from the ABS module via the CAN network for info on the brake pressure being applied so the TBC can apply the brake accordingly.

 

So, to get a little history, and please forgive me, but you've towed with this truck/trailer combo before? I'm sure you are aware, that you get very little brake gain from the Ford TBC at a standstill?

 

You know I hate it when I feel stupid. Thank you. Yes I knew that and I've even encountered it before. But I guess there is something about getting older that causes brain farts of an epic size. Of course that is the answer. Nothing happens below about 12 MPH I think. Thanks to all who answered. Especially those who read the thread before answering.

 

Take her out for a spin just to calm your nerves. If thats all it turns out to be, well, we all have brain farts occasionally. Sounds like you are in store for a nice trip to Flo-rida. I'm jealous. Wading through 16" of snow here in Western Michigan, although we do have a slight warming trend on the way.

 

Been retired 15 years, this is our 15th winter down there. But we love Michigan n the summer.

 

Have fun in Florida...