DTC P3147-239: Transmission Malfunction; DTC P3147-241: Transmission Malfunction: Description

The HV transaxle assembly consists of the planetary gear unit, MG1, and MG2. The gear unit uses the planetary gear to split engine output in accordance with a driving request while the vehicle is driven or the HV battery is charged. MG2 assists engine output while increasing vehicle driving force. MG2 also converts the energy, which is consumed in the form of heat during normal braking, into electrical energy and recover it into the HV battery to effect regenerative braking. MG1 supplies power, which is used for charging the HV battery or driving the MG2. It also controls the stepless transmission function of the transaxle by regulating the amount of electricity generated to change MG1 speed. In addition, the MG1 is used as a starter motor to start the engine. The transmission input damper absorbs the shock generated when the driving force from the engine is transmitted.