Hyundai Ioniq (AE): High Voltage Battery System / Power Relay Assembly (PRA). 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]

    Check the target charging voltage when replacing with a new module Fault Code1.Turn OFF the ignition switch.2.Connect the diagnostic tool device to the self-diagnosis connector (DLC).

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

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Description and operation

    DescriptionIn ordinary cars, the mechanical water pump mounted on the engine for heating purposes is activated to circulate the cooling water, but in hybrid cars, AEWP is used to circulate the cooling water when the engine is not operating. Classification System Cooling water used

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

    System Block DiagramComponent Parts and Function Outline Component part Function Vehicle-speed sensor, ESP/ABS Control ModuleConverts vehicle speed to pulse.VCUReceives signals from sensor and control switches.

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