FAIL-SAFE CONTROL METHOD BY FAIL-SAFE OIL PUMP CONTROL UNIT FOR HYBRID VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a fail-safe control method of an oil pump control unit for a hybrid vehicle, capable of securing traveling performance of a vehicle by fail-safe or limp-home control, when an electric oil pump or an oil pump control unit go of order, or when an abnormality occurs in a CAN communication line, or the like.;SOLUTION: It is determined whether an oil pump system is off or whether the CAN communication line for the oil pump control unit is off. Then, when the CAN communication line is off, a motor of the electric oil pump is operated, depending on an on/off state of a hard wire. When the oil pump system is off, and an oil pump driver fails or the motor of the electric oil pump fails, the motor of the electric oil pump is turned off.;COPYRIGHT: (C)2010,JPO&INPIT