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Vehicle has fuel but still shows reserve light on and fuel pump not powering up

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24 Apr 2022 01:46 #243103 by Greakking972
Vehicle has fuel but still shows reserve light on and fuel pump not powering up was created by Greakking972
Vehicle has fuel but still shows reserve light on and fuel pump not powering up.

Vehicle is cranking Up but not starting 

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  • Lambert
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  • The quickest Jimny in Harrogate...(that I own)
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24 Apr 2022 05:05 #243105 by Lambert
Replied by Lambert on topic Vehicle has fuel but still shows reserve light on and fuel pump not powering up
Welcome to the forum. First what age is the Jimny, second have you checked the fuses?
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!

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  • Dirtbird
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24 Apr 2022 08:32 #243107 by Dirtbird
Replied by Dirtbird on topic Vehicle has fuel but still shows reserve light on and fuel pump not powering up
Check your fuel pump relay. They are two relays in rubber housings that are slotted onto two fins beside the main fuse box beside the battery under the bonnet. I think I swapped the two of them around just to see if the fuel pump engaged. 
 
 

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24 Apr 2022 10:32 #243116 by Greakking972
Replied by Greakking972 on topic Vehicle has fuel but still shows reserve light on and fuel pump not powering up
The Jimny is a 2009 year one of the jb43 models I replaced fuel pump with a new one only to find that the new pump isn’t being powered up but both the old and the new fuel pump works perfect when tested on a 12v battery

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24 Apr 2022 10:42 #243117 by Dirtbird
Replied by Dirtbird on topic Vehicle has fuel but still shows reserve light on and fuel pump not powering up
Greakking check the relay by swapping them with each other and 9 times out of 10 it's a €5 replacement relay.

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24 Apr 2022 15:54 #243126 by Greakking972
Replied by Greakking972 on topic Vehicle has fuel but still shows reserve light on and fuel pump not powering up
I did swap the relays but the issue still continues. What else can possible cause this issue.

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26 Apr 2022 12:32 #243167 by fordem
Replied by fordem on topic Vehicle has fuel but still shows reserve light on and fuel pump not powering up

What else can possible cause this issue.

Bad grounds, blown fuses, rodent damage (this was the cause on my car), time to get out a meter and start diagnosing the problem.

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