DTC P0A02-719 Motor Electronics Coolant Temperature Sensor Circuit Low; DTC P0A03-720 Motor Electronics Coolant Temperature Sensor Circuit High: Description

The HV control ECU detects HV coolant temperature through the coolant temperature sensor built into the inverter. The inverter cooling system is the same as that for the Motor or Generator, and operates independently of the engine cooling system. The HV control ECU controls the inverter cooling system to prevent overheating based on signals from the coolant temperature sensor. The ECU also monitors cooling system operation and detects malfunctions in the HV coolant temperature sensor and the circuit.