I have no power to my fuel pump?

SCHAE

MEMBER
2004 HYUNDAI SANTA FE
2.7L
6 CYL
2WD
AUTOMATIC
150,000 MILES

I have no power to my fuel pump no power to my fuel cut off switch and no power to 3 ECU fuses, two 20-amp fuses and one 10-amp fuse. What I need is a wiring diagram, can you help me are do you know what's wrong?

Friday, October 13th, 2023 AT 12:39 AM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

It sounds like the engine control relay is not working. Here are the wiring diagrams to show you how it powers the system on the location of the relay so you can change it out. Check out the images (below). Please let us know what happens.

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Friday, October 13th, 2023 AT 9:14 AM

SCHAE

MEMBER
3 POSTS

Thank you very much. I just went ahead and put a new ECU relay in because that’s what I was thinking it was also, but I wasn’t 100% for sure because I didn’t have a wiring diagram, so I wasn’t sure how to check it. But when you said you thought it might be the relay, I just got one and replaced it and it fixed it so thank you very much. I worked on vehicles professionally all my life I just don’t have anywhere to get information from anymore and I will send you a donation.

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Friday, October 13th, 2023 AT 6:14 PM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

You are welcome, please use 2CarPros anytime we are here to help. We can provide all the information you need.

We appreciate the donation. :)

https://gofund.me/c7d318ad

Glad you could get it fixed, thanks for letting us know.

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Saturday, October 14th, 2023 AT 10:44 AM