Hyundai Ioniq: High Voltage Battery System / Power Relay Assembly (PRA). Description and operation

Hyundai Ioniq (AE) 2017-2025 Service Manual / Hybrid Control System / 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]

Sub Battery Pack Assembly (Sub-BPA). Repair procedures

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)...

Power Relay Assembly (PRA). Repair procedures

Removal • 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) 2017-2025 Service Manual: Special service tools

Special Service Tools Tool (Number and Name) Illustration Use 09568-1S100Saperate the ball joint from the front alxe09546-3X100 Shock absorber lock nut removal toolUsed for remove the shock absorber lock nut...

Hyundai Ioniq (AE) 2017-2025 Service Manual: Repair procedures

Removal and installation • Check for foreign objects caught in the flap and linkage area.1.Disconnect the battery negative terminal.2.Remove the front bumper.(Refet to Body - "Front Bumper")3.Remove the radiator grille...