POWER SOURCE CONTROL SYSTEM

A power source control system includes a first power source, a second power source, a first switch, a second switch, a first voltage detector, a second voltage detector, and a control unit. The first power source supplies power to a first load and a second load. The second power source supplies power to the second load when an abnormality occurs. The control unit detects the presence or absence of an abnormality based on a voltage detected by the first voltage detector and/or the second voltage detector. In addition, the control unit switches on the first switch and switches off the second switch in a normal state. Further, the control unit switches off the first switch and switches on the second switch when an abnormality is detected.