Kia Optima: Fuses And Relays / Engine Room Junction Block

Kia Optima DL3 2019-2023 Service and Repair Manual / Body Electrical System / Fuses And Relays / Engine Room Junction Block

Components and components location

Components Location

1. Engine room junction block

Repair procedures

Inspection

Power Relay (Type A)

Check for continuity between the terminals.

1.	After supplying power 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.

Power Relay (Type B)

Check for continuity between the terminals.

1.	After supplying power 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.

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

1.	Disconnect the negative battery terminal.

2.	Loosen the multi fuse mounting nut (A).

3.	Remove the multi fuses (B) by releasing the hook.

Check the multi fuses for any damage.

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

•	Use the multi fuse of the exact fuse capacity.

Removal

Engine Room PCB Block

1.	Disconnect the negative battery terminal.

2.	Disconnect the connector (A).

3.	Push the hooks in the direction of the arrow and lift up the engine room PCB block (A).

4.	Disconnect the connectors (A) from the engine room PCB block.

Installation

1.	Install in the reverse order of removal.

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