To control a vehicle control system so as to obtain desired power in accordance with a detected voltage.

A converter ECU 70 receives a detected voltage value transmitted from an integrated ECU device 60 by an analog signal via a communication line 100, and receives a detected voltage value transmitted from the integrated ECU device 60 by a digital signal via a communication line 120. The converter ECU 70 corrects the detected voltage value indicated by the analog signal on the basis of the comparison of the received detected voltage value indicated by the analog signal and the received detected voltage value indicated by the digital signal, and corrects and controls a DC-DC converter on the basis of the comparison of the corrected detected voltage value of the analog signal and a feed voltage value necessary for the drive of a vehicle drive motor calculated on the basis of an accelerator opening.