DTC P3147-239: Transmission system; DTC P3147-241: Transmission system [11/2016 - ]: Description

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

The hybrid vehicle transaxle assembly consists of the planetary gear unit, generator (MG1) and motor (MG2). The planetary gear unit uses a planetary gear to split the engine output into mechanical power and electrical power in accordance with driving requests when the vehicle is being driven or the HV battery is being charged. When accelerating, motor (MG2) assists engine output by increasing vehicle driving force. Motor (MG2) also converts braking energy, which would otherwise be consumed in the form of heat during braking, into electrical energy. This recovered energy is stored in the HV battery. Generator (MG1) supplies power, which is used for charging the HV battery or driving motor (MG2), and also regulates the amount of electricity being generated. In addition, generator (MG1) is used as a starter motor to start the engine.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate
P3147-239	Transmission system	Drive force from motor (MG2) or the engine cannot be transmitted to the wheels. The engine, generator (MG1), motor (MG2) or hybrid vehicle transaxle assembly does not run smoothly due to a mechanical malfunction. (1 trip detection logic)	Engine Hybrid vehicle transaxle assembly Hybrid vehicle control ECU assembly Transmission input damper assembly	Does not come on	Master Warning Light: Comes on
P3147-241	Transmission system	Hybrid vehicle transaxle malfunction (input system lock): When the vehicle is stopped, an engine cranking signal is sent but the generator (MG1) does not rotate. The generator (MG1) or the engine does not rotate, or the planetary gear unit is malfunctioning. (1 trip detection logic)	Engine Hybrid vehicle transaxle assembly Hybrid vehicle control ECU assembly Transmission input damper assembly	Does not come on	Master Warning Light: Comes on

RELATED DATA LIST

DTC No.	ECU Data List
P3147-239	Motor(MG2) Revolution Motor(MG2) Torq M(MG2) Trq Exec Val Generator(MG1) Rev Generator(MG1) Torq G(MG1) Trq Exec Val Engine Revolution Calculate Load
P3147-241