Cooling device controlling apparatus, cooling device failure detecting apparatus, cooling device failure detecting method, and computer readable recording medium recording program for causing computer to execute detection of failure of cooling device capable of detecting failure in short period efficiently

摘要

After a vehicle system is actuated, a mode command unit determines that an auxiliary battery is cleared. Determining that the auxiliary battery is cleared because of loss of stored information of backup RAM, the mode command unit outputs a cooling mode command signal SI specifying a prescribed cooling mode to a fan circuit, and starts measuring a prescribed time with a timer. The fan circuit drives a fan motor with a prescribed cooling mode and detects a number of rotations of the fan motor to transmit to the mode command unit as a fan output signal. The mode command unit detects a failure of a cooling fan from a comparison result of the fan output signal and the specified prescribed cooling mode. The timer senses a lapse of the prescribed time, and the failure detection ends.