C5 Mk1 2.2HDI 2001 Diesel Additive ECU

[aspire_helen]

Can someone help me locate the "Particle Filter Electronic Control box" on the car . Mine is Citroen part number 1525AS for DPX42. See example photo.
My research shows that there are 3 variants under the same part ref 9643360280, namely EAS100, EAS100.01 and EAS100.02. Do these refer to software standards perhaps? And are they inter-changeable? I have read that early ECUs were problematic.

Many thanks

[wheeler]

Its bolted to the inner sill at the rear on the same side as the fuel filler flap. Open the rear door on the filler flap side & pull up the plastic trim that hooks under the door seal, pull the carpet back & you should see it in there.

The FAP ECU's were absolutely fine...... until you try to reset the additive counter when you re fill the additive.

[GiveMeABreak]

Not a lot of detail. It is component 1282, and seems to be under the front passenger seat somewhere.... Shown in diagram 'G', then look for 'G' on the main vehicle diagram.

[aspire_helen]

Thanks Wheeler, just where you said. It turns out to be EAS100.01 9646216380, but I know it is not the 2001 original. A Citroen dealer fitted the current one in August 2007 when the additive pump began running continuously. I have my concerns that it has been right since, but that's another post for the near future!

It would appear a mouse had been busy under trim , right next to the ECU, with significantly nibbled foam rubber insulation and a collection of dozens of sycamore seeds. How is this even possible???! The wiring appeared untouched. See photo - the red part is the ECU connector.