Theory Of Operation
WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
The Brake Pressure Sensor is located internally in the Anti-lock Brake System (ABS) Hydraulic Control Unit (HCU). It interfaces directly with the ABS Module through spring loaded contacts. This is why it is imperative that at the end of the diagnostic procedure, if it is determined that the unit is to be replaced the entire unit needs to be replaced and not separated. This ensures the unit can be diagnosed as to a sensor failure or an internal connection failure.