Hyundai Ioniq (AE): 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.

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: PTC Heater. Repair procedures

    InspectionOperating Logic Test (Manual only)Inspect the PTC operation by confirmation logic as follows.1.Entering(1)Set the Floor mode and maximum heating position.(2)Turn off the blower switch.(3)Press the intake (recirculation) button 5 times or more.

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: emperature Control Actuator. Components and components location

    C

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