An output control apparatus that controls opening and closing between an output terminal connected to an external apparatus and a power supply terminal to which power for the external apparatus is supplied is provided. The output control apparatus includes a first switching element and a second switching element that are connected in series between the power supply terminal and the output terminal, a data generation portion that generates output data for turning on and off the first switching element and the second switching element based on a control command received from outside, a first controller that controls drive of the first switching element, and a second controller that controls drive of the second switching element.