ECU plug(near radiator)wiring pictures desperately needed

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Diesel engine related problems
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My Name: user1234

Contributor
Posts: 20
Joined: Wed Nov 11, 2015 2:18 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 210000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: LHD (Europe)

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Could someone please send me pictures of the wiring colors on the first ECU plug near the radiator so I could compare them with my own pictures (the plug closest to the radiator).
The electrical connections in my car are a disaster and redoing them solved many problems i was having.
Only, I sort of lost concentration there for a moment while redoing the ECU plug connections and misplaced a couple that i think have to do with the Air flow meter, since the car acts the same with the Air flow meter connected and disconnected.

Since this, the turbo's boost is unstable and my car doesn't drive well :(

I wish i had another C3 hdi to compare the wiring with.
All c3 models are the same wiring, so 1.6 1.4 8v 16v all are good

Autodata's diagrams and other diagrams don't seem to cover the connections color and order.
Attachments
First and second rows
First and second rows
Rows 3 (none on 4) 5 and 6
Rows 3 (none on 4) 5 and 6
Rows 7 and 8 (big wires)
Rows 7 and 8 (big wires)
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My Name: C3CAR

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Posts: 2746
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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Hi, when I get home this evening I will look to see if I have a better diagram available. I know the 16v is available with wire numbers and pin numbers, but I am hopeful there will be the same available for the 8v engine that you have.

I only have access to a 16v physical car for photos and the first plug has only a few wires in it.
My Name: user1234

Contributor
Posts: 20
Joined: Wed Nov 11, 2015 2:18 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 210000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: LHD (Europe)

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Would be much appreciated!
User avatar
My Name: C3CAR

Guru
Posts: 2746
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)
Has thanked: 199 times
Been thanked: 106 times

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MAF connector on the MAF itself:

PARTICULARITÉS ÉLECTRIQUES Affectation des voies du connecteur :
  • voie 1 : information température d’air

    voie 2 : masse débimètre

    voie 3 :

    voie 4 : alimentation débimètre (5Volts)

    voie 5 : information débit d’air

    voie 6 : masse

The Bosch EDC16C3 ECU identification of plugs and pins in the diagram below
Bosch EDC16-C3 ECU pin and plug identification
Bosch EDC16-C3 ECU pin and plug identification
and part of the diagram which shows 1310 the MAF on a Bosch EDC16C3 ECU
C3 EDC16C3 Bosch Diagram - Part1
C3 EDC16C3 Bosch Diagram - Part1
If the picture is too small to read, click it and if its still too small, try clicking it again :)
My Name: user1234

Contributor
Posts: 20
Joined: Wed Nov 11, 2015 2:18 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 210000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: LHD (Europe)

Post

This is great!!
Should probably be enough, I'll let you know if anything is missing.
Back to the car I go..
My Name: user1234

Contributor
Posts: 20
Joined: Wed Nov 11, 2015 2:18 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 210000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: LHD (Europe)

Post

Thank you for the diagrams, they put me on the right path.
Only turns out this is a totally different ECU made by Bosch.
Mine is CDI806 by Siemens for the HDI 1.4 8v 2002-2005 or so.
Couldn't find its diagrams anywhere online!
User avatar
My Name: C3CAR

Guru
Posts: 2746
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)
Has thanked: 199 times
Been thanked: 106 times

Post

user1234 wrote:Thank you for the diagrams, they put me on the right path.
Only turns out this is a totally different ECU made by Bosch.
Mine is CDI806 by Siemens for the HDI 1.4 8v 2002-2005 or so.
Couldn't find its diagrams anywhere online!
I will look to see if I have access to the siemens 806 ECU, thanks for letting me know it wasn't right.
User avatar
My Name: C3CAR

Guru
Posts: 2746
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)
Has thanked: 199 times
Been thanked: 106 times

Post

C3CAR wrote:Mine is CDI806 by Siemens for the HDI 1.4 8v 2002-2005 or so.
The 1.4 8 valve HDi C3 2002-2005 (VAN-CAN) Models had a choice of 2 engine ECUs :shock:

The was the Siemens SID 806 or the BOSCH EDC 16 C34

So I would imagine the wiring plugs for both ECU are very similar if not identical.

The 16v 1.4 HDi on the same 2002-2005 (VAN-CAN) has only a Delphi C6 ECU, which has very different ECU plug wiring to the 8v models.
My Name: user1234

Contributor
Posts: 20
Joined: Wed Nov 11, 2015 2:18 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 210000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: LHD (Europe)

Post

Yes, that's what I've been picking up bit by bit, the different ECU's in the different models.. I suppose all diagrams can be found in Autodata.
Turns out Autodata 3.38 (but not 3.40?) -> year 2003 -> Citroen -> c3 classic -> 1.4 hdi -> Hzx, has wiring diagrams with color codes and everything for my 8v model, so my wiring is fixed, but only a step, not the solution.. :?

I'll try to get the diagram out of Autodata and post it, cuz it's great, but didn't manage yet, may need to format secondary OS for that, but gotta do it anyway.

I'll leave this thread and start a new one on the actual problem I'm having with my engine, so thanks for all the help.
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