Drive device

A drive device that controls a plurality of inductive loads each having a one-side end and an other-side end, is drivably controlled in accordance with an input of a drive signal, and is connected at the other-side end to one terminal out of a positive terminal and a negative terminal of a battery,

• the drive device comprising:
• a connection portion that connects a plurality of wires each connected to the one-side end of a corresponding one of the plurality of inductive loads,
• a common wire that integrally commonalizes two or more of a plurality of wires each connected to the other-side end of a corresponding one of the plurality of inductive loads,
• a control section, and
• a plurality of control drive sections each connected to the control section and to the one-side end of a corresponding one of the plurality of inductive loads, wherein
• each of the plurality of control drive sections includes:
• a first switching element conductively connected to a positive terminal side of the battery;
• a second switching element connected to a negative terminal side of the battery;
• a signal generation control section that performs control so that the drive signal is generated by supplying a control signal to each of the first switching element and the second switching element and switching a conductive state and an interrupted state of each of a first current path between the one-side end of the inductive load and the positive terminal side of the battery and a second current path between the one-side end of the inductive load and the negative terminal side of the battery, and
• a current monitoring section that monitors a current flowing through a common current path common to the first current path and the second current path during control performed by the signal generation control section,
• wherein
• the control section executes disconnection determining processing for determining that a disconnection abnormality occurs in the common wire based on a change of the current in the common current path, which is monitored by the current monitoring section of each of the control drive sections.