Hyundai Ioniq (AE): High Voltage Battery Control System / Safety Plug. Repair procedures

Removal
1.
Turn the ignition switch OFF and disconnect the auxiliary 12V battery negative (-) terminal.
2.
Remove the safety plug cover (A).

3.
Unfasten the hook (A) and then remove the safety plug (C) by pulling the lever (B) to the direction of arrow.

Installation
   
•
Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
1.
Install the Safety Plug in the reverse order of removal.

    Circuit Diagram

    DescriptionThe Power Relay Assembly (PRA) consists of the positive and negative main relays, pre-charge relay, pre-charge resistor and battery current sensor.

    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: Evaporator Core. Repair procedures

    Replacement1.Disconnect the negative (-) battery terminal. 2.Remove the heater and blower assembly.(Refer to Heater - "Heater Unit") 3.Remove the evaporator core cover (A) after loosening the mounting screws.4.Pull out the evaporator temperature sensor (A) from the evaporator core.

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