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  #1  
Old 02-23-2012, 08:51 PM
ramrick14 ramrick14 is offline
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Default Integrated Brake controler question

When roads are icy and the ABS system goes on my trailer brake are released...

The brake controler was installed after the purchase of the truck but the product is the OEM one.

Any thought?


Thanks

Rick
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  #2  
Old 02-24-2012, 10:07 AM
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To me, that sounds correct. I would guess the pcm recognizes when the ABS pump kicks in and then releases the trailer brakes to avoid having the trailer brakes lock, sliding/pushing the truck out of control...
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Old 02-25-2012, 04:44 PM
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Default brake controler

Thank you for the info but, if a got a 4000 pounds trailer in the back and the ABS on the truck goes on and released the electric brake ALSO.
I think the trailer is going to push even more the truck out of controls and into the ditch.

What I am tring to figure out is,anybody knows why or how to get the right signal from computor that there is a trailer hooked up in the back and PLEASE apply brake so I will not injured or kill anyones

thank you guys.
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Old 02-25-2012, 07:03 PM
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Have you had the dealer flash your computer to recognize the brake controller?
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Old 02-25-2012, 07:25 PM
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Locked trailer wheels sliding on ice is much worse than free spinning wheels being slowed by the truck w/ABS. I don't exactly know that's how the system is designed, but I would almost guarantee it is that way. It doesn't sound like anything is wrong.

If the trailer brakes lock and the trailer slides while the truck is pumping the brakes with the ABS pump the truck will be slowing faster than the trailer, and what will happen is the trailer will kick around beside you. You don't want the trailer brakes locked...
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Old 02-25-2012, 10:41 PM
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Default

I'm with Ramrick, it doesn't seem safe to kill the trailer brakes when the ABS kicks on. These trucks are supposedly able to haul 10,000 lbs if "correctly" equipped. Imagine all that weight being thrown onto the truck brakes in a panic situation....., not good.
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Old 02-26-2012, 08:46 AM
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Well I'm not trying to be a jerk about this, but just imagine that weight sliding up beside you... it just doesn't make sense to me to allow the trailer to lock up (unless maybe the ABS would disengage/engage the trailer brakes at the same times the truck brakes were pumping).

With the truck using ABS and slowing down and the trailer being locked and sliding (not slowing down as fast as the truck) the hitch/ball is a pivot point and the trailer is going to pivot sideways since it has no resistance from the tires to the road keeping it straight...

I agree it's a bad thing to have all the weight of the trailer being free rolling pushing your truck, but it's worse to have it locked up. That's why you're supposed to drive slower and safer so this doesn't happen.
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Old 02-26-2012, 09:08 AM
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Default

I didn't say you were being a jerk. I'm a class A truck driver so I know the deal with trailer braking. I think you're much better off leaving the braking up to the driver in a panic situation. Think of this, push 10,000 lbs of trailer with NO brakes against a truck with ABS, the more the truck is skidding the more the ABS is going to keep pulsing and the further the stopping distance will be. Plus, totally killing the trailer brakes is going to cause a HUGE surge against the truck in an already hazardous situation. Think of it as a HUGE load shift in a 53' tractor trailer, that usually causes a roll over. Either way, it is probably going to be a bad situation.
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Old 02-26-2012, 09:10 AM
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In the end, if it were me and I couldn't cure the trailer brakes from being disabled I would pull that controller out and sell it on Ebay and buy something like a Prodigy.
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Old 02-26-2012, 09:11 AM
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Well my thought is that they designed the oem brake controller that way for a reason...?
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