Hyundai Ioniq (AE): Hybrid Motor Cooling System / Electric Water Pump(EWP). Description and operation

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Hybrid Motor System / Hybrid Motor Cooling System / Electric Water Pump(EWP). Description and operation

Description
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Function : It circulates the coolant for the hybrid system (HPCU, drive motor, and HSG).
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Operating Principles: When the coolant temperature exceeds the limit set in the MCU in the hybrid system, the motor control unit (MCU) sends a command to the electric water pump (EWP) through the CAN communication to operate the EWP.
EWP then sends its operation status to MCU through the CAN communication.

    Specifications Cooling system CoolantSpecified coolant LLC - 10 Quantity Approx. 3.2L (0.85 US gal, 3.38 US qt, 2.82 lmp qt.)

    Component location1. HPCU (Hybrid Power Control Unit)(LDC+MCU+HCU+Reservoir)2. Hybrid drive motor3. Hybrid starter generator (HSG)4. Electrical radiator5.

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