MALFUNCTION AVOIDING APPARATUS OF VEHICLE STABILITY MANAGEMENT SYSTEM AND METHOD OF THE SAME

PURPOSE: Malfunction preventing device and method for a vehicle stability management system are provided to improve the stability of a vehicle during the coordination control of an ESC and an MDPS of the vehicle stability management system. CONSTITUTION: A malfunction preventing device for a vehicle stability management system comprises the following: an MDPS fail safe logic unit(12) receiving a VSM command packet from an ESC ECU, and preventing the system down from the malfunction of another separate MDPS fail safe logic unit; a torque validity detecting logic unit(14) receiving the VSM command packet for determining whether the VSM torque is valid, and including a gradient judgment logic unit(18) reducing the difference sense of a sudden application of the torque by determining whether the absolute value of a torque limit judgment logic unit(16) and the vehicle gradient is bigger than the threshold value; and a communication validity detection logic unit(20) determining the validity of the communication between an ESC and an MDPS, and including a checksum comparison unit(22) and a VSM control will detection unit(24).