ITBC
Ok now I have a problem with my Integrated brake controller, worked for a while now I get nothing on the dic when I hook up my trailer and I have taken my truck to the dealer and they say nothing wron...
Forum Discussion
dmaxing wrote:Miles Away wrote:
I have found that most vehicle dealers have little or no clue about diagnosing issues with OEM brake controllers. You may have to go to a trailer dealer, NOT necessarily an RV dealer, who will have the right equipment and knowledge to diagnose the problem. Just to eliminate a problem with your truck or trailer, hook your truck up to someone else's trailer and see if it works. If it doesn't then you can be sure the problem is in the truck. Are all the other pins working (lights etc)? Are you getting juice to the brake pin at the rear of the truck?
I am getting a pulsing power on the brake controller pin.
If your looking at the 7 pin connector and NO trailer connected, that is what you should see on the GM IBC from what I've read about the IBC. My understanding is it sends a low voltage pulse down the connector to determine when it actually is hooked to a brake system.
Here is a quote on how the IBC operates
OK, here's the story on GMs. The installed Brake controller send a digital signal down the line (approx 3 to 4 volts) looking for the correct resistance. Once it see the correct resistance it will give the "Trailer Connected" message and will now supply the proper voltage and current to the brakes. What happens these "So called Techs" put a voltmeter on the brake control line and read that digital signal and tell you there is a problem with the controller which is untrue.
If it is pulsing when the trailer is connected, then it may be not working correctly.
