Control device

A control device includes: memory diagnosis means for setting a power-on status when an electric power is turned on and diagnosing an ECC memory; restarting means for restarting the control device when the memory diagnosis means detects a correctable error of the ECC memory during the power-on status of the ECC memory; and operation processing means for resetting the power-on status and performing a normal operation when the memory diagnosis means does not detect a correctable error of the ECC memory, while performing the normal operation when a correctable error of the ECC memory is detected because of the restart of the control device by soft reset after the reset of the power-on status but when the control device is not in the power-on status.