Help! OEM brake controller issue?
Thread Starter
|
New User
Joined: Oct 2019
Posts: 16
Likes: 0
Help! OEM brake controller issue?
Hi, new member here. 2011 F250 SD. OEM fifth wheel towing package. Leaving campground I discover no trailer brakes using brake pedal.
If I adjust the controller so the gain is showing, and while it's showing I touch the brake pedal, I briefly get "output" but then it goes away, which is not normal. In layman's terms I assume the pedal is talking to the controller and the controller is sending the voltage to the brakes. Since the truck recognizes "trailer connected" and I can apply the brakes manually using controller that seems to eliminate the brakes, trailer wiring, harness and controller. Leaving the truck. Since I get a brief "output" that seems to eliminate fuses and I've checked every fuse that seems relevant.
Is there some sort of rheostat thingy that sends variable brake pedal output to the controller? Where is it located? The only electrical connections I can find near the pedal is the stoplight switch (stoplights work on trailer) and what I'm guessing is a brake fluid low level light connection (located on side of brake reservoir.
Help! (thx)
If I adjust the controller so the gain is showing, and while it's showing I touch the brake pedal, I briefly get "output" but then it goes away, which is not normal. In layman's terms I assume the pedal is talking to the controller and the controller is sending the voltage to the brakes. Since the truck recognizes "trailer connected" and I can apply the brakes manually using controller that seems to eliminate the brakes, trailer wiring, harness and controller. Leaving the truck. Since I get a brief "output" that seems to eliminate fuses and I've checked every fuse that seems relevant.
Is there some sort of rheostat thingy that sends variable brake pedal output to the controller? Where is it located? The only electrical connections I can find near the pedal is the stoplight switch (stoplights work on trailer) and what I'm guessing is a brake fluid low level light connection (located on side of brake reservoir.
Help! (thx)
FTE Community Team
Joined: Jan 2019
Posts: 10,772
Likes: 1,511
The folks with answers to this kind of thing don't usually frequent the "New Member Introductions" forum. You might want to post in "1999 to 2016 Super Duty" and/or "Fifth Wheel & Gooseneck RV Towing" forum to get some answers flowing.
Welcome aboard!
Welcome aboard!
Thread Starter
|
New User
Joined: Oct 2019
Posts: 16
Likes: 0
I'm guessing the reason the brakes seemed to work when manually activating the controller, is that when I did I was applying full braking (highest voltage). This higher voltage was able to bridge a high resistance gap and apply the brakes. At anything less than 100%, such as when pushing the pedal, I got no brakes. Just a theory.
(Note to moderator - thank you for moving this, I know better as I'm active on another forum. I was in a hurry and just slammed out a post. This should probably be in the fifth wheel section as suggested)
Thread
Thread Starter
Forum
Replies
Last Post
