Diesel Particulate Filter (DPF) Switching in EDC17 ecu.

Before switching off the DPF function in your ECU you must decide what to do about the hardware fitted to the car. The hardware is the DPF/Catalyst and the wiring/sensors.

Options.

1. Original look. Remove DPF/catalyst. Open case and empty the inside. Refit. Leave all original sensors and wiring in place. In some countries this may be the only option allowed.

2. New pipe. Remove DPF/catalyst and replace with a pipe.

2a. Keep sensors and wiring

2b. Remove sensors and wiring.*


*If you remove sensors and wiring you may get fault codes and even a dashboard warning. These will need coding out of the ECU file.


Don't rip out the DPF yet. Some ECU files get very upset if you try a DPF file delete solution when the DPF is already reporting full and failed regeneration. It is advisable to always do a forced regeneration first before touching the DPF or the ECU file.


What if forced regeneration doesn’t work?


You may have to remove the DPF and soak it in something like alloy wheel cleaner for a day or so. Flush out with hot water if possible. Refit and try the forced regeneration again.


DO NOT INSTALL A DPF OFF FILE BEFORE THE HARDWARE HAS BEEN SORTED


With the hardware sorted you are ready to modify the ECU file.

As usual the information here is based on using Winols to examine and modify your file.


The file below has been opened in 16 bit, decimal (255), LoHi view.

1. Set the view to text.

2. Open ‘Search’ and then search for decimal byte sequence (decimal tab)

3. Enter 4081, 00015 Click right arrow button or Enter button.

The view should look like this;

You won’t see the YELLOW highlight. I added that.


The addresses for 04081 and 00015 will be highlighted. (Grey in this example). This sequence usually only occurs once in a file so you should be in the correct place.

4. Make sure you have a least 14 columns in your view and move the selected two addresses to the start row as shown above. (1ED0E6).

5. Many files look exactly like the view above.

E.g


04081 00015 32767 0003 04000 00001 00000 00000 00001 02800 32767 00200 32768 32767

It is important to view this whole row because the DPF switch is not always at exactly the same address in all ECU files.

In 16 bit decimal view the DPF switch is 00001. In the example you can see that this occurs twice. e.g


04081 00015 32767 0003 04000 00001 00000 00000 00001 02800 32767 00200 32768 32767

In many files the DPF switch 00001 is followed by 02800 so the DPF switch is the second 00001.

Another clue is that the DPF switch 00001 is usually close and to the left of the sequence; 32768, 32767.


NOTE: If the 04081, 00015 search doesn’t help. Try searching 32768, 32767 instead.

The correct DPF switch position is highlighted in YELLOW on the above picture.


Changing the value 00001 to 00000 will switch off all DPF functions *


For those that like 2D view. This is the TEXT picture above shown in 2D view.

In this picture the yellow DPF highlight address has been changed to a RED vertical bar.


As you can see, the DPF switch location is not obvious when viewing in 2D mode.


* Does this really work? Is the DPF really switched off when 00001 is changed to 0000?


With EDC16 ECU’s the single switch should turn off all DPF functions. With EDC17 ECU’s some people have reported problems after using the single switch.


Reported problems are usually because;

1. They ignored the ‘regenerate DPF first’ advice

or

2. They have disconnected sensors and have sensor/error faults

or

3. Some part of the DPF function is still running even with the DPF switch set to OFF.


If you ripped out the DPF and sensors and wiring without resetting DPF regeneration status first you are in trouble and need professional help.

If some part of the regeneration process is still running it will probably be ‘Post Injection’.

Setting the ‘post injection’ maps to zero should cure this.


NOTE:


There are EDC17 ECU’s with a very different file layout to that shown above. The same DPF search procedure will work but you may have several areas and several possible switches. These files need a degree of trial and error.

I don't know load the pictures :( Sorry!!!

hay
Siemens, sid, ppd describe you?
I greet

Garage Zone wrote:I don't know load the pictures ...

...and here it is possible to look at information with pictures:
https://sites.google.com/site/vagecumap/14-finding-dpf-switch-in-edc17-ecu

Nice guide, thanks.

does someone has this in pdf?

Nice guide

Hello!

Maybe somebody is able and willing to help me out. Seems that you are edc17 experts!
I tried to remove dpf from ECU on my Honda Accord 2,2 i-dtec 150hp, but i had no luck in finding the switch.
I have a whole bunch of switches, starting at 19DE34 33 by the way, one of that could be the dpf but absolutely no clue. should i try each one by the time, what are the other switches?

Trying with volta was no luck either. The car has no error codes, but also no power at all. On startup everything works great, good power in first gear, but then very different engine sound similar like regenerating the dpf, and no power at all.

Maybe someone could also explain this particular ECU. What is stored in the flash and whats on the Eeprom.

Thanks in advance

Int. Flash:
http://ul.to/6waqgh3n
Eeprom:
http://ul.to/wovghslx

Thanks for the informations on EDC17 DPF removal.

Hi
Thanks for a lote informations about EDC17 :clap: