Service Brake circuit #1

[rapidisimo]

I got a fault code spn 1087 fmi 1, I googled and apparently it's a service brake circuit #1 problem. I connected insite but it wouldn't show me the fault, I could only see the fault on my dash. Does anyone know where this circuit is located? I'm thinking its somewhere in the dash but I'm not sure.

[Chamberpains]

More info.... Truck, model, year??

[rapidisimo]

2011 Int'l prostar

[snailexpress]

Insite is for engine. If you have brake faults you can use Inline adapter and truck or brake manufacturer program to run diagnostic.
If break are Bendix made http://www.bendix.com/en/servicessupport...acom65.jsp here is free diagnistic software.
Cummins FAULT VIEWER could help too https://www.cummins.com/parts-and-servic...ult-viewer