Hey Guys,
i read a file off a EDC16U34 from a Passat 2.0TDi 140 hp: 03G906021AB / 03G906021NK, SW 399388.
I just wanted to disable the egr Map and being not so used to Diesels i checked the known forums for a solution. I tried to use the one everybody describes like:
look for the hysteresis maps, the look like blabla and zero 2 of 5 of them out. So i did like described, even if i dont like the way the diesel-guys describe everything (do they never call a map with the correct name?). btw. today i know the maps are called
AirCtl_qhigh_CUR
AirCtl_qmiddle_CUR
but back to my question:
After i zero'd the maps and tested the flash in the car it still got the DTC "insufficient flow @ egr", just like before. So i started digging a little bit deeper in that file and found that the part which contains these maps is repeated two additional times?! The two following versions differ slightly from the first one, but its easy to find them anyway.
The offsets are
3FF34
and
CB94
you can see the maps in the attached file. i called them airctl_xxx_p1 / p2 / p3 for the 3 possible positions
So who can tell me why these parts of the data are repeated and how its possible to identify the "right"ones? Also what is Airctl_qmiddle? High and low makes sense for detecting high IQs and using a hysteresis, but middle? Its also not described in the EDC16 FR

Already thought it might be related to this, as it is in MED9, thank you for confirming!

regarding the EGR disabling:
its really done by zeroing
AirCtl_qhigh_CUR and AirCtl_qmiddle_CUR. In VCDS the flow gets still calculated, but that shouldnt irritate, as the duty cycle and spec. /actual EGR Rate stays 0, so this one works fine, it's just about getting the correct ones