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 Post subject: ECU compatibility between 2005 and 2006.
PostPosted: Mon Sep 26, 2016 2:03 pm 
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So for a long time I figured that the 05 and 06 ECUs were interchangeable. If you look at the pinout diagrams for the ECU they are the same between 05 and 06(heck the engine harness is the same minus a revision).

After going through a bunch of hoopla with the ABS/Traction control I can now say that the ECUs are not fully interchangeable.

The 05 ECU can run the engine and everything else fine - but running an 05 ecu in an 06 will generate a "implausible data received from ABS" in the ECU and "implausible data received from PCM" code in the ABS unit.

There are some architecture differences between the 05 and 06. The 05 has the front control module, or gateway. You will find it referred both ways in the manual, but never at the same time, making IDing it difficult and confusing. The 05 also has a 3 channel abs system, Left/Right Front, and Rear. 06 has a 4 channel, one speed sensor per wheel. In an 05 a handful of signals come into the front control module, in the 06 these instead come into the BCM. On the 05 the FCM puts these signals on the CANBUS, on the 06 the BCM puts these on the CANBUS.

So the real difference comes in that the 05 ECU is looking to read a certain set of information from the ABS, and its slightly different.

While I think it should be possible to flash the ECUs with different firmware for the 05 or 06 that is probably beyond our level and would require someone with more knowledge of the Bosch ECU.

I have not tried to put an 06 ECU into an 05 but there may be similar compatibility issues.

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 Post subject: Re: ECU compatibility between 2005 and 2006.
PostPosted: Sat Oct 01, 2016 1:50 pm 
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I bought an extra ecu years ago with the idea of having an original tune to change out if i needed dealer service to keep ged tune from being overwritten and in case i ever had ecu issues. Now, I have bought two stage II turbo kits and was going to send in that ecu to be reflashed so that i could have ecu here and minimize down time during installation of turbo. Both are 2005 models. I don't know what year model my extra ecu came from.

Is there a different part number for each year ?
Will the wrong year ECU enable the vehicle to operate but just throw the codes mentioned or cannot operate?
Would it make a difference if ESP was not enabled and a 2005 ECU put in a 2006 model?

I assume the extra TCM i got from the same vehicle can function or be reflashed for both years since i see where Ram TCM s are being used in the CRDS. Is this correct?

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05 Blu LIM, OME GDE Tbo, wk II 245/75/17, KC Lights, bull bar, 195K H TC
05 Blu Lim, Dayton, GDE HT, 255/75/18 , 210K , H TC
06 Bla Lim, GDE Eco, Destination AT 245/75/17, 151K, H TC
06 D Khaki Lim 126K wkII Eur TC
05 D khaki Lim 145k refurbishing
All CRDS: Fumoto, Lift , Fan Shroud mod, fuel head Gen II, SAMCOS,self TB, 2 Mic filt, Hayden


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 Post subject: Re: ECU compatibility between 2005 and 2006.
PostPosted: Sat Oct 01, 2016 4:21 pm 
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I suspect that maybe GDE could do a flash on the ECU to make it compatible with each year. When we work on the DIY tunes there is section that we can play with(the maps for boost, fueling, etc) and then there is a whole separate part of the tune that is allocated to programing for other stuff. I assume in there is where the info is stored for all of these things that the ECU needs to know how to communicate with. Supposedly we cannot flash this part of the memory with MPPS but I suppose it could be by someone with the right equipment.

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 Post subject: Re: ECU compatibility between 2005 and 2006.
PostPosted: Sat Oct 01, 2016 6:56 pm 
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TKB4 wrote:
Is there a different part number for each year ?


Several part numbers per year.

TKB4 wrote:
Will the wrong year ECU enable the vehicle to operate but just throw the codes mentioned or cannot operate?


It should run, but abs/esp may have issues.

TKB4 wrote:
Would it make a difference if ESP was not enabled and a 2005 ECU put in a 2006 model?


How do you disable ESP on a 2006? Please tell me!

TKB4 wrote:
I assume the extra TCM i got from the same vehicle can function or be reflashed for both years since i see where Ram TCM s are being used in the CRDS. Is this correct?


Appears to be no functional difference between 2006 and 2005 TCM.

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 Post subject: Re: ECU compatibility between 2005 and 2006.
PostPosted: Sun Oct 02, 2016 7:25 am 
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2005 KJ ecm part number 56044562xx

2006 KJ ecm part number 56044776xx

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 Post subject: Re: ECU compatibility between 2005 and 2006.
PostPosted: Sun Oct 02, 2016 2:17 pm 
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Thanks for replies. I did check a 2006 and noticed the different number from a 2005 but wasn't sure if this was a software number or what. Also did search on bosh part number 0 281 011 476 and found several sites with this ecu but probably for other vehicles. I assume one of these would not function for either year without programming from chrysler etc. for other functions of the ecu.

The 2006 models have a button on steering column to disable the ESP function. This should lead to a way to tell a 2005 ECU to be used on a 2006 CRD but not necessarily visa versa, depending on how the button/switch actually works.

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05 Blu LIM, OME GDE Tbo, wk II 245/75/17, KC Lights, bull bar, 195K H TC
05 Blu Lim, Dayton, GDE HT, 255/75/18 , 210K , H TC
06 Bla Lim, GDE Eco, Destination AT 245/75/17, 151K, H TC
06 D Khaki Lim 126K wkII Eur TC
05 D khaki Lim 145k refurbishing
All CRDS: Fumoto, Lift , Fan Shroud mod, fuel head Gen II, SAMCOS,self TB, 2 Mic filt, Hayden


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 Post subject: Re: ECU compatibility between 2005 and 2006.
PostPosted: Mon Oct 03, 2016 12:08 am 
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TKB4 wrote:
The 2006 models have a button on steering column to disable the ESP function. This should lead to a way to tell a 2005 ECU to be used on a 2006 CRD but not necessarily visa versa, depending on how the button/switch actually works.


No. That is a temporary command to turn off esp, that does not change the software compatibility.

Think of the esp button like turning off the touchscreen on a new windows 10 computer, just because the touchscreen is off until it is restarted doesn't mean all of a sudden its windows 7.

While the Bosch PN may be the same it will not be interchangeable with our ECUs unless the application file is reloaded. You can ground out between two pins during startup and put the ECU into boot mode where the software application can be loaded. In this way it would be possible to convert a TDI ECU into a Jeep ECU, IF, and only IF, we had the original application file to load. But these are Bosch/Jeep specific, and stay pretty well restricted to the OEM.

If we ever lucked out and found a source for the original application file we would probably also get the a2l file - which defines the map for all the parameters, bosch publishes tools for development and the motorsports folks that work with this. If we ever got the a2l files it would make owner tuning much more interesting as we would have clear definitions for that software revision.

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 Post subject: Re: ECU compatibility between 2005 and 2006.
PostPosted: Mon Oct 03, 2016 12:20 am 
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Also some speculation, putting the ECU into boot mode may allow us to write sections of the eeprom that are not normally written to with the MPPS. However I have not tried this and I don't have the OEM level of documentation to play with.

Personally I am interested in knowing where the Injector codes are, VIN, PIN, and vehicle mileage sits in the ECU for reprogramming purposes.

Now that I have a spare 05 ECU and I can program it back and forth I might play with making changes in these things for the purpose of trying to determine where in the map they exist.

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 Post subject: Re: ECU compatibility between 2005 and 2006.
PostPosted: Mon Oct 03, 2016 8:01 am 
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If it matters, the bosch part number for a 2005 is 0281011476.
I wonder if 2006 is the same?

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 Post subject: Re: ECU compatibility between 2005 and 2006.
PostPosted: Fri Oct 07, 2016 10:08 am 
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bosch part number on a 2006 ecu of mine is 0281012595

I knew the esp button didn't affect the ecu code just not sure whether it disables the sensor input to the ecu or tells ecu not to act on the sensor inputs . If it disables the inputs, the 2005 ecu could function as a 2006 with the esp not enabled and might not even throw a code.

As far as vin number ged says all they need is a same year ecu to put their tune into, so they must have a way to change the vin number in ecu or another way to make it compatible with a different vin number of same year. I will clarify this with GDE.

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05 Blu LIM, OME GDE Tbo, wk II 245/75/17, KC Lights, bull bar, 195K H TC
05 Blu Lim, Dayton, GDE HT, 255/75/18 , 210K , H TC
06 Bla Lim, GDE Eco, Destination AT 245/75/17, 151K, H TC
06 D Khaki Lim 126K wkII Eur TC
05 D khaki Lim 145k refurbishing
All CRDS: Fumoto, Lift , Fan Shroud mod, fuel head Gen II, SAMCOS,self TB, 2 Mic filt, Hayden


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