Hyundai Ioniq: Fuses And Relays / Relay Box (Engine Compartment). Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Body Electrical System / Fuses And Relays / Relay Box (Engine Compartment). Repair procedures

Inspection

1.	Disconnect the negative (-) battery terminal.

2.	Pull out the relay from the engine compartment relay block.

Power Relay (Type A)

Check for continuity between the terminals.

1.	After supplying power to between No. 85 and 86 power relay terminals, check that there is continuity between No. 30 and 87 terminals.

2.	After disconnecting power between No. 85 and 86 power relay terminals, check that there is no continuity between No. 30 and 87 terminals. Engine Room Relay Block

Power Relay (Type B)

Check for continuity between the terminals.

1.	After supplying power to between No. 85 and 86 power relay terminals, check that there is continuity between No. 30 and 87 terminals.

2.	After disconnecting power between No. 85 and 86 power relay terminals, check that there is no continuity between No. 30 and 87 terminals.

PCB Block

1.	Disconnect the negative (-) battery terminal.

2.	Push the four hooks (B) in the direction of the arrow and lift up the PCB block (A).

3.	Remove the PCB block by disconnet the connector.

Fuse

1.	Check that the fuse holders are loosely held and that the fuses are securely fixed by the holders.

2.	Check that each fuse circuit has the exact fuse capacity.

Check the fuses for any damage.

•	If a fuse is to be replaced, be sure to use a new fuse of the same capacity. Always identify the cause of the blown fuse and completely eliminate the problem before installing a new fuse.

Multi Fuse

Engine room fuse is to optimize the package.

•	The entire multi fuse (A) has to be replaced even if only one fuse is damaged.

•	When replacing it, refer to "the Engine compartment- component location" diagram to check fuse capacities and circuit arrangement.

•	Use the multi fuse of the exact fuse capacity for each circuit.

Relay Box (Engine Compartment). Components and components location

C..

Relay Box (Passenger Compartment). Components and components location

C..

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: Hybrid Starter Generator(HSG). Repair procedures

Removal • When working on the high voltage system, make sure that you are familiar and comply with the "Safety Precautions, Cautions and Warnings". If you do not comply with them, a serious accident such as electric shock or leakage may occur...

Hyundai Ioniq (AE) 2017-2025 Service Manual: Components and components location

C..