Kia Optima Hybrid: Fuses And Relays / Relay Box (Engine Compartment) Repair procedures

Inspection
Power Relay Test (Type A)
   
Do not use pliers.
Pliers will damage the relays, which could cause the engine to stall or not start.
Carefully remove the relay using the relay puller.
Check for continuity between the terminals.
A : Rear defogger relay
B : EWP relay
C : Deicer relay
D : ACC realy
E : IG1 relay
F : IG2 relay
G : Burglar alarm horn relay
H : Blower relay
I : Fuel pump relay
J : Horn relay
1.
There should be continuity between the No.30 and No.87 terminals when power and ground are connected to the No.85 and No.86 terminals.
2.
There should be no continuity between the No.30 and No.87 terminals when power is disconnected.

Power Relay Test (Type B)
Check for continuity between the terminals.
A : Wiper relay
B : Rain sensor relay
1.
There should be continuity between the No.30 and No.87 terminals when power and ground are connected to the No.85 and No.86 terminals.
2.
There should be continuity between the No.30 and No.87 terminals when power is disconnected.

Power Relay Test (Type C)
Check for continuity between the terminals.
A : Engine control relay
1.
There should be continuity between the No.30, 87a and No.87 terminals when power and ground are connected to the No.85 and No.86 terminals.
2.
There should be no continuity between the No.30, 87a and No.87 terminals when power is disconnected.

Power Relay Test (Type D)
Check for continuity between the terminals.
A : OPCU relay
B : Cooling fan relay
1.
There should be continuity between the No.30 and No.87 terminals when power and ground are connected to the No.85 and No.86 terminals.
2.
There should be no continuity between the No.30 and No.87 terminals when power is disconnected.

Fuse Inspection
1.
Be sure there is no play in the fuse holders, and that the fuses are held securely.
2.
Are the fuse capacities for each circuit correct?
3.
Are there any blown fuses?
If a fuse is to be replaced, be sure to use a new fuse of the same capacity. Always determine why the fuse blew first and completely eliminate the problem before installing a new fuse.
Multi Fuse
Multi Fuse is for optimizing the engine room package.

   
Multi fuse is needed to replace entirely when there is damage to only one fuse.
When replace the multi fuse, refer to the "Engine compartment - component location" diagram exactly.
Use the multi fuse capacities for each circuit correctly.
Remove the nut cover (A) when removing the nut.
Relay Box (Engine Compartment) Components and Components Location

Components ...

Relay Box (Passenger Compartment) Components and Components Location

Components ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Power Window Relay Repair procedures


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Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Schematic Diagrams


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