ECU identification numbers

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My Name: paullap

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Posts: 47
Joined: Wed Mar 18, 2015 8:09 am
Model: C3 2002-2005, Original shape model
Year: 2004 (04)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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HI Can anyone please tell me what these numbers mean,

etiquette programme ( what does this number mean)

Psa number (as some people tell me this not important) but I am not convinced.

c3 ecu.jpg
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My Name: C3driver52

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Posts: 2013
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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paullap wrote:HI Can anyone please tell me what these numbers mean,

etiquette programme ( what does this number mean)

Psa number (as some people tell me this not important) but I am not convinced.
Hi paullap,

I don't know, but the important one is S2PM-370 which identifies the model of ECU.

As for etiquette programme, I would guess its the original programming version (only valid at the factory because the sticker won't be updated if the dealer does an update). If you are swapping ECUs you would want to check for and do any updates anyway...

PAS number looks like a PSA internal numbering for S2PM-370 ECU, going by the picture you attached.
My Name: paullap

Experienced Member
Posts: 47
Joined: Wed Mar 18, 2015 8:09 am
Model: C3 2002-2005, Original shape model
Year: 2004 (04)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

I want to buy an ecu set, ecu, bsi, key reader, and key chip complete, how do I know what is going to work . my car is a c3 1.4 sx petrol 2003sx. would a lx be the same?.


Paul
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My Name: C3CAR

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Posts: 2815
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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paullap wrote:I want to buy an ecu set, ecu, bsi, key reader, and key chip complete, how do I know what is going to work . my car is a c3 1.4 sx petrol 2003sx. would a lx be the same?.


Paul
Which ECU do you already have? and buy one that matches. Eg S2PM-370 = S2PM-370, S2PM-380 = S2PM-380, 16LPC = 16LPC etc

or

Pick a set from one with the same engine, there are a couple of engines for the C3, so match the engine type exactly and keep the year close.
My Name: paullap

Experienced Member
Posts: 47
Joined: Wed Mar 18, 2015 8:09 am
Model: C3 2002-2005, Original shape model
Year: 2004 (04)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

mine is S2PM-380
ecu original.jpg
My Name: paullap

Experienced Member
Posts: 47
Joined: Wed Mar 18, 2015 8:09 am
Model: C3 2002-2005, Original shape model
Year: 2004 (04)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

This is the ecu I have in the car with the bsi unit key reader and key, I got this one from another car. not sure what car it was but it was a c3, The engine runs fine but the headlight are stuck on, the switch can not turn them off.
running one.jpg
Paul
User avatar
My Name: C3driver52

Guru
Posts: 2013
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)
Has thanked: 146 times
Been thanked: 78 times

Post

paullap wrote:This is the ecu I have in the car with the bsi unit key reader and key, I got this one from another car. not sure what car it was but it was a c3, The engine runs fine but the headlight are stuck on, the switch can not turn them off.
The engine ECU does not control the lights.

The lighting is controlled by the BSI and BSM modules.

You have a kit that is BSM, ECU and Key and you need to match ECU to your existing ECU and BSI to your existing year and model, if not, you can be very close on the model and make changes with lexia tool (click here), but you are still better off getting a BSI that matches your spec and year exactly for the greatest compatibility.
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