A Door Control System is being used for controlling doors in buses running in urban/suburban areas as a part of safety requirement and to protect the passengers. The opening and closing of the doors will be in logical sequence depending upon the driver input, vehicle speed and the emergency conditions. To achieve this logic the door control system consists of an ECU, pneumatic valves, pressure sensors and switches. To predict the performance of this system under various operating conditions, the entire system is being modeled in one of the commercially available multi-domain physical modeling software employing bond graph technique and lumped system and the performance is predicted. This paper deals with the modeling and simulation of entire Door Control System.