Hyundai Ioniq: High Voltage Battery Control System / Main Relay. Description and operation

Hyundai Ioniq (AE) 2017-2025 Service Manual / Hybrid Control System / High Voltage Battery Control System / Main 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]

Safety Plug. Repair procedures

Removal1.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...

Main Relay. Specifications

Specification Item Specification ContactRated Voltage (V)450Rated Current (A)80CoilOperating Voltage (V)12Resistance (Ω)20...

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: Engine Clutch Actuator. Repair procedures

Removal1.Turn the ignition switch OFF and disconnect the battery (-) terminal. 2.Remove the engine room under cover.(Refer to Engine Mechanical System - "Engine Room Under Cover")3.Disconnect the engine clutch actuator connector (A). • Make sure that the hydraulic fluid or foreign substance does not enter the connector assembly of the actuator...

Hyundai Ioniq (AE) 2017-2025 Service Manual: Smart Cruise Control (SCC) Switch. Repair procedures

Removal1.Disconnect the negative (-) battery terminal.2.Remove the steering wheel assembly.(Refer to Steering System -"Steering Wheel")3.Remove the steering back cover (A).4.Remove the steering remote control connector (A).5.Remove the steering remote control (A), after loosening the screws...