DTC P3226-562: DC/DC Boost Converter Temperature Sensor; DTC P3226-563: DC/DC Boost Converter Temperature Sensor: Description

The MG ECU located in the inverter with converter assembly detects the temperature of the boost converter using the temperature sensor built into the inverter with converter assembly. The inverter cooling system is the same as that for MG2 and MG1, and it operates independently of the engine cooling system. The characteristics of the boost converter temperature sensor are the same as those of the generator inverter temperature sensor. (For details. Refer to DESCRIPTION .) The MG ECU uses signals from the boost converter temperature sensor to check the effectiveness of the inverter cooling system. If necessary, the MG ECU will limit inverter output to help prevent inverter overheating. The ECU also detects malfunctions in the boost converter temperature sensor and its wiring.

DTC No.	INF Code	DTC Detection Condition	Trouble Area
P3226	562	Unusual sudden change in boost converter temperature sensor output occurs, or that change occurs repeatedly.	Wire harness or connector Inverter cooling system Water pump with motor and bracket assembly Inverter with converter assembly Fan motor Cooling fan ECU Multiplex network front light ECU (front controller) Fusible link block assembly Fuse Hybrid vehicle control ECU
P3226	563	Boost converter temperature sensor output deviation