fuel relay location

Questions specifically about a Petrol powered Citroen C3 (usually engine or fuel related problems).
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My Name: BEEFY83

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Posts: 5
Joined: Thu Dec 02, 2021 9:24 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: LX
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: ET3 16-valve (90 PS)
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Hi new to the forum looking for the fuel relay on the 1.4 petrol 2002 lx. Can someone please shed some light on where they have hidden it please.
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My Name: C3driver52

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Posts: 1877
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
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BEEFY83 wrote: Tue Dec 07, 2021 8:36 pm Hi new to the forum looking for the fuel relay on the 1.4 petrol 2002 lx. Can someone please shed some light on where they have hidden it please.
Hi

What fault are you having?
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My Name: C3CAR

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Posts: 2634
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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The fuel pump relay is part of the BSM unit, the fuse box in the engine bay.
My Name: BEEFY83

Member
Posts: 5
Joined: Thu Dec 02, 2021 9:24 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: LX
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: ET3 16-valve (90 PS)
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The car is turning but not firing I tested the pump which works put isn't getting power properly. This is why I looked for a relay. So if the relay has gone on the board they are not plug and play like I have had in other cars.
My Name: Citroen-Driver

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Posts: 212
Joined: Mon Dec 18, 2017 12:10 am
Model: C3 Pluriel - with or without roof
Year: 2003 (53)
Engine Size: 1.6 (16v)
Fuel Type: Petrol
Mileage: 30000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: ET3 16-valve (90 PS)
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BEEFY83 wrote: Wed Dec 08, 2021 12:58 am The car is turning but not firing I tested the pump which works put isn't getting power properly. This is why I looked for a relay. So if the relay has gone on the board they are not plug and play like I have had in other cars.
Hi

The fault could be IMMO? - immobiliser? - changed the battery in the key fob recently?

BSM is one of the body control units, a black box, not worth repairing as you can get replacements easily.

Diagnose IMMO faults with lexia tool
My Name: BEEFY83

Member
Posts: 5
Joined: Thu Dec 02, 2021 9:24 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: LX
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: ET3 16-valve (90 PS)
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No not changed the battery in the fobs ill do this later see what happens. We only got the car a month ago but private sale.
Thank you for your help so far
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My Name: C3CAR

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Posts: 2634
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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Been thanked: 90 times

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BEEFY83 wrote: Wed Dec 08, 2021 12:17 pm No not changed the battery in the fobs ill do this later see what happens.
When you change the battery in key fob, the black transponder drops out and doesn't get noticed or incorrectly refitted. Then you get a non starter that turns over but no fuel delivery.
My Name: BEEFY83

Member
Posts: 5
Joined: Thu Dec 02, 2021 9:24 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: LX
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: ET3 16-valve (90 PS)
Been thanked: 1 time

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What does it look like. Sorry for sounding daft
My Name: BEEFY83

Member
Posts: 5
Joined: Thu Dec 02, 2021 9:24 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: LX
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: ET3 16-valve (90 PS)
Been thanked: 1 time

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Sorry checked both keys do have them
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My Name: Ozvtr

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Posts: 957
Joined: Wed Jul 10, 2019 3:31 am
Model: C3 2002-2005, Original shape model
Year: 2003 (53)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: Other
Gearbox: Automatic PRND
DPF: No
LHD or RHD: RHD
Engine name: TU3 (75 PS)
Location: Brisbane, Australia.
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You will need someone to help you.
Use your multimeter on continuity and check fuse f2 in the engine bay fuse box. Make sure its not blown. Or pull it out and look.
While probing one side of fuse F2 (for voltage), get someone to turn the key to 'ignition'. You should get voltage there for a second or so, then nothing.
When the key is turned, the pump runs for a few seconds to prime the system, then it STOPS! If the engine is not ACTUALY running the engine ECU cuts power to the fuel pump! The pressure in the primed lines is (normally) enough to get the engine running...THEN the engine ECU turns the fuel pump on.
You can then check pin 11 of the grey 16 pin connector the same way.
You can also sit in the back seat and listen to hear if the pump runs (for a second) when the ignition is turned on.
You can also check the fuel pressure. There is a schrader valve (like a car tyre valve) on the end of the fuel rail. Press the center pin and there should be pressurized fuel there. WARNING: this MAY spray out fuel!!! Protect your eyes, make sure there are no sources of ignition!! If fuel only dribbles out there is a problem with the fuel supply. Might be fuel pump might be blockage.
If the above works, the problem is not your fuel supply.
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