Hyundai Ioniq (AE): High Voltage Battery Control System / Pre Charge Relay. Description and operation

Description
The Power Relay Assembly (PRA) consists of the positive and negative main relays, pre-charge relay, pre-charge resistor and battery current sensor. It is located inside the battery pack assembly and controls the high voltage power circuit between the high voltage battery and inverter by the control signal of BMS ECU.

[PRA Operation Sequence]

    Removal    • Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system.

    Specification Item Specification ContactRated Voltage (V)450Rated Current (A)20CoilOperating Voltage (V)12Resistance (Ω)40.

    Other information:

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

    Self Diagnosis1.Self-diagnosis process.    • When operating the self-diagnostics, the below fault (self-diagnostics code) will blink at 0.5 seconds interval on the temperature display settings (driver's side only) and the remaining symbols are OFF .

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Parking Distance Warning (PDW) ON/OFF Switch. Repair procedures

    Removal    • Put on gloves to prevent hand injuries.    • When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.

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