Fuel Pump relay location

Tiny
RONALD DEVOLD
  • MEMBER
  • 2013 KIA RIO
  • 1.6L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 298,285 MILES
I am in search of the fuel pump relay. I have look and look and cannot find not one relay on this vehicle. I removed the relay box under the hood and there is no relays underneath. I disconnected the relay box inside the vehicle under the steering wheel and there is no relays behind that box.
The relay fuse is good and the I tested the pump and it is brand new and works. When I turn on the ignition, the fuel pump is not priming. I connected my scan tool and sent a signal to activate the pump and it will not engage. I can send power to the pump to prime it and the car will start but kills a few seconds afterwards.
Sunday, August 10th, 2025 AT 10:11 AM

4 Replies

Tiny
RONALD DEVOLD
  • MEMBER
  • 134 POSTS
The repair manual shows the relays on the backside of the fuse box. I didn't see any. Unless the relays are under the cover or soldered to the circuit board.
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Sunday, August 10th, 2025 AT 10:13 AM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
The relay is part of the circuit board on that car. However as you have pulled the under hood box out you can test to be sure that the PCM signal is getting to the board. You just need to find the Brown or Blue wire (Blue for smart key, Brown for normal key) in position 14 and the orange wire in 17 in the connector shown. The orange will be the heavy line that powers the pump. The other is the control wire. If the PCM is sending the signal the wire at 14 will become a ground when on, that triggers the relay. That sends power to the orange wire. IF the relay is the problem you could wire in an external or replace the relay inside the box.
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Sunday, August 10th, 2025 AT 10:44 AM
Tiny
RONALD DEVOLD
  • MEMBER
  • 134 POSTS
The diagram wire colors are different from the ones on the car
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Tuesday, August 26th, 2025 AT 7:52 PM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
HMM, those are supposed to be the OE but it looks like they used the wrong diagram in the service information. What you might want to do is go to https://kiatechinfo.snapon.com/Login/register.aspx
and set up an account. That gets you the latest factory info. The 72 hour package is a great deal and you can "print" the pages you need . If you print them to a pdf file you can save them..
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Wednesday, August 27th, 2025 AT 5:14 PM

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