Aug 12, 2016 CLICK HERE TO BUY YOUR NEXT CAR PARTS FROM MY AMAZON STORE Trailer Brakes 101 And How To Diagnose Wiring Problems Yourself Trailer brakes can be mechanical, electrical, or hydraulic. Hydraulic" surge brakes" are the most popular technology. The entire system is contained in the trailer itself; any number of different vehicles can tow it. Aug 28, 2014 But neither myself or the trailer mechanic know why for sure, my guess is a corroded ground connection that caused the left side brakes to not work.
But it could be that we replaced the 7way plug with new one. Jun 19, 2011 Trailer brakes not working on my 2009 TrailerSport. Applied manually with after market control and did not work. Switched out the controller and did not work. Electric trailer brakes work because an electromagnet attached to the end of an arm inside the brake drum is attracted to the spinning brake drum when current from the tow vehicle is supplied to the brake.
May 03, 2014 Re: Brake controller not working with pedal but works manually You should just apply steady pressure to the pedal with antilock brakes, pumping them is old Trailer brakes only work manually register before antilock brakes, that could possibly be your problem.
Dec 13, 2011 Alright, today on this 2009 Ford F150 we are going to diagnose a brake controller problem. Now we can use these steps on any brake controller that is on the market to verify if it is working or not.
trailer or trailer brakes not grounded check trailer and brake grounds NO TRAILER BRAKES USING BRAKE PEDAL OFF NO CONNECTION AT STOPLIGHT SWITCH THRU RED CHECK STOPLIGHT CONNECTION MANUAL OPERATION WORKS (PEDAL) STOPLIGHT WIRE (SEE WIRlNG STEP 8) 2005 dodge 2500 diesel it has a new brake controller. trailer brakes work when you push the controller manualy but trailer brakes don't work when you push the brake pedal there is likely a wire that goes from your brake pedal switch to the trailer brake controller this wire is probably broken or not hooked up.
if it is hooked up and no wires are broken I would start making sure everything is hooked up right. Trailer brakes are not working when the pedal is pressed. Work fine when I use the factory manual controller inside the truck. All lites work, but brakes on trailer only activate when manually activated. now the only way for the brake lights on the car to come on is use the trailer brake controller manually, even if no trailer i Oct 01, 2009 It happens only with a trailer that has the trailer brakes plugged in (either the 5th wheel or the flat trailer with brakes) but we have no problems with the 4prong boat trailer.
We never have lost our lights during these messages. only the brakes.