Additional Engine bay fuses/relays

Questions specifically about a Diesel powered C3 (usually engine or fuel related problems)
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My Name: SimonB17

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Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 65000
Trim Level: Touch
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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hi All,

I have had a proverbial nightmare, with a garage keeping my car for some 8 months and then charging me for not fixing the thing, and leaving the engine bay in a real mess.

I am attempting to fix it myself now, but have come across an additional engine fuse/relay box to that below the engine fuse panel. It is located just in front of the normal one, below the left hand headlamp. It has 3 or 4 large fuses (40A or 30A) and two of three relays. The main issue is that this is not shown on any diagram I can find and it is just "floating" - it is not fixed to anything! It is not obvious where it should fix to, or how it should fix. Anyone have any idea? If it helps I have some photos but just dropping this line quickly. It may have been fixed to some of the plastic panels around that area but I would be surprised!

It is/was a 2003 SX 16V HDI.

Simon
My Name: Missing Lincs

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Model: C3 2002-2005, Original shape model
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Hi Simon B17

To me this sounds like you're describing the part of the engine bay fusebox which normally lives underneath the fuse panel which you see when it's all properly assembled.

I don't have any photographs to show you but hopefully someone will be along soon with pictures. :)
If at first you don't succeed, destroy all the evidence and pretend you never tried :lol:
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My Name: Arfur Dent

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Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
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Missing Lincs wrote:I don't have any photographs to show you but hopefully someone will be along soon with pictures. :)
Are these any use?

Image


Image
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My Name: C3driver52

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Model: C3 2002-2005, Original shape model
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Engine Size: 1.4 i
Fuel Type: Petrol
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SimonB17 wrote:If it helps I have some photos but just dropping this line quickly.
Yes, please attach some photos. You can add them to the forum by using the 'upload attachment' that appears further down the screen when replying to a post.
My Name: SimonB17

Member
Posts: 2
Joined: Wed Sep 09, 2015 9:22 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 65000
Trim Level: Touch
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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thanks guys - here is a couple of photos - one showing its position relative to the engine fuse box, and a close up of the additional fuse/relay box.
CloseUp.jpg
GeneralView.jpg
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My Name: Arfur Dent

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Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
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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SimonB17 wrote:thanks guys - here is a couple of photos - one showing its position relative to the engine fuse box, and a close up of the additional fuse/relay box.
I can see the confusion. The part I have arrowed on your picture is Part number 15 on the black and white drawing above. I think part 17 is a bracket for it, but I can't see that on the car I took the pictures from, unless 17 is the lid?

extra fuse box with relays under headlight in the engine bay on a Citroen C3.
extra fuse box with relays under headlight in the engine bay on a Citroen C3.


The picture below is from a 2002 1.4 16v HDi C3 and shows the same fuse box but in its plastic protective box as shown in the black and white diagram. Its fixed down, probably just clipped to the metal below it.

Hidden fuse box engine bay Citroen C3
Hidden fuse box engine bay Citroen C3
What do the fuses protect? I don't know - yet :(
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My Name: Arfur Dent

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Posts: 3303
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
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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Arfur Dent wrote: Mon Sep 14, 2015 2:55 pm What do the fuses protect? I don't know - yet :(
Additional, supplemental cabin heating element controlled by the engine ECU :D

Citroen C3 HDi supplemental cabin heating
Citroen C3 HDi supplemental cabin heating
Shown here in Lexia as 'Activated'.
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My Name: Arfur Dent

Guru
Posts: 3303
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 258 times
Been thanked: 111 times

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extra hidden additional engine bay fuse box (15) on Citroen C3 Diesel
extra hidden additional engine bay fuse box (15) on Citroen C3 Diesel
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My Name: Arfur Dent

Guru
Posts: 3303
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 258 times
Been thanked: 111 times

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BCP3 Hidden fusebox and relay box for supplemental heating/additional cabin heating on the HDi Citroen C3 2002-2009





BCP3 additional cabin heating control relay Diesel Citroen C3 2002 -
BCP3 additional cabin heating control relay Diesel Citroen C3 2002 -
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