2019 Ford F350 - Trailer brake issue

[Miley]

The fault code I found out on Thursday at Bell Ford

[Miley]

So if I found out what trips the orange light and it less than 20 amps then what ? Can you convince Ford to raise it ?

[Miley]

I can’t even get the dealer to open a work order.
Will being a part swapper solve the problem because my is set to low ?

[VOLVO-V70]

Miley , what is with all the posts ? Can’t you just put it all in one ?

[Nevada_545]

@Miley

fault code Ford DTC B148A:11 for Orange Warning Light the service manager did not know what the limit is set for and it’s not listed in limited information he has for the brake controller

From post # 28 and 29, you indicated that the current limit is 27 amps. I found for the F350 that diagnostic fault occurs at 49 amps. How many amps does your trailer draw?

@Miley

Can you convince Ford to raise it ?

And risk causing a fire? The wiring has a current limit, also you have not proven there isn’t a short circuit in the brake system wiring.

[TwinTurbo]

@Miley

I seem to recall you said in the beginning that the fault only occurs under heavy load and hard braking. I’m not going back to look.

That was another responder that assumed that was the case
It doesn’t take hard braking to get the orange light

OK, so I went back and here’s what you stated in your opening post:

@Miley

This display warning only occurs with this triple axel trailer toy hauler, no other trailer causes the warming. But the other trailers do not have 6 electric brakes connected to the F-350. When the brakes are applied too hard all 6 brakes draw too much current

and

@Miley

I push the OK button everything is fine until I apply the truck brakes too hard, which causes all 6 brakes on the trailer to engage

Too much circular discussion for me. Good luck.

[Miley]

I did and you complained that it was a wall of text

VOLVO-V70 Sep '22

Would it be asking too much to have some breaks and paragraphs instead of a wall of text .

[Miley]

Too hard means it causes the warning light to come on. It doesn’t mean panic stop, or emergency stop, it could happen as you approach a green light and it turns yellow, and your not going to get thru the intersection with out running the red light so you apply the brake to hard and the light goes on. I have the engine brake on and the trailer brakes work except of the orange light and we stop in time. Or a small car cuts in front of you and reduces your stopping distance as you approach the intersection. I’ll find the fault code I found online, I thought it was a policy number. The service manager looked up the fault code on his computer and there was no mention of the current limit under that fault code.

[Nevada_545]

@Miley

The service manager looked up the fault code on his computer and there was no mention of the current limit under that fault code.

Read post # 28 again;

@Miley

TC sets in continuous memory when the ignition is set to ON or during the on-demand self test if the current draw on the PWM output circuit is greater than 27 amps.
Failure Type:

Circuit Short To Ground
This sub type is used for failures, where the control module measures ground (battery negative) potential for greater than a specified time period or when some other value is expected.

[bing]

I know nothing of this problem but I just dealt with the folks at etrailer.Com again. They are a great bunch and know everything there is to know about hitches and trailer wiring. Might just be worth a call.

[Miley]

I did and because they don’t sell the Ford brake controller they quickly loose interested. I have spent a lot of money with them, the latest purchase is:

Order Summary
1 Item Awaiting Stock
Estimated Ship Date: 3/22/23
Current Monitor with 7-Blade Connector
ITEM # 6565
QTY: 1
$359.45
Tekonsha Current Monitor with 7 Blade Connector

This will measure the current and voltage output of the Ford trailer brake controller that feeds the trailer brakes.
If the current is the cause of the warning light I can then measure it and see the current level that trip/causes the warning light. Inside this box is 6 brake magnets so it looks like a triple axle with a brake on each tire