Hyundai Ioniq (AE): Hybrid Motor Cooling System / Electric Water Pump(EWP). Components and components location

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

Component location

1. HPCU (Hybrid Power Control Unit)
(LDC+MCU+HCU+Reservoir)
2. Hybrid drive motor
3. Hybrid starter generator (HSG)
4. Electrical radiator
5. Electric water pump (EWP)

    Description• Function : It circulates the coolant for the hybrid system (HPCU, drive motor, and HSG).• 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.

    Removal1.Remove the 12 V battery (-) cable.2.Remove the undercover.(Refer to Engine Mechanical System - "Engine Room Undercover".)3.Drain the coolant from the hybrid cooling system.

    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: Mode Control Actuator. Repair procedures

    Inspection1.Turn the ignition switch OFF.2.Disconnect the mode control actuator connector.3.Verify that the mode control actuator operates to the defrost mode when connecting 12V to terminal 3 and grounding terminal 4.Verify that the mode control actuator operates to the vent mode when connected in reverse.

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