Transmission ECU swap

[brenovalle]

I have a 2003 Td5 Discovery with REMAP by Td5 Inside.
I decided to swap the Transmission ECU by one from V8 RR P38.
After the process the engine starts but the Transmission doesn't works properly. It sticks on emergency mode and only uses the 3rd gear.
Is there any suggestions?
Is it possible that resetting the adaptive values it works again?
Thank you in advance for your kind attention

[shack]

Do you have any Diag gear you can interrogate the EAT with?

It's possible it is faulty, is also possible you didn't manage to get the connector in correctly.

Lastly, the swap could have coincided with your battery being on the way out, this will cause the same issue.

Test those things and see what you get.

Cheers
James

[mylesaway]

The answer is in your post...

RR P38 trans controller.

These are completely different part numbers to D2 V8 trans controllers that are being used to replace TD5 ones here and therefore presumably have been programmed by Bosch
and ZF to suit RR P38 only.

[mylesaway]

Can you tell me the LR part no. of the trans controller you removed from your D2?

I would be interested to know if yours is using the same as Australian TD5 EU3 engines.

Should be a IGG 000 070 in that case.

[DazzaTD5]

I have a 2003 Td5 Discovery with REMAP by Td5 Inside.
I decided to swap the Transmission ECU by one from V8 RR P38.
After the process the engine starts but the Transmission doesn't works properly. It sticks on emergency mode and only uses the 3rd gear.
Is there any suggestions?
Is it possible that resetting the adaptive values it works again?
Thank you in advance for your kind attention

D2 TD5 tcm and D2 tcm are not interchangeable, at least 1 pair of pins for data are numbered differently.

[johnp38]

D2 TD5 tcm and D2 tcm are not interchangeable, at least 1 pair of pins for data are numbered differently.

Made me look ya dirty chook

Which pair ? Can't find em

the tcu CAN bus pair go to different numbering on the ecu end of the loom depending on V8 or Td5 engine, can't spot any difference on tcu pin out for V8 or Td5

[shack]

I *think* that was a misstype.

I *think* he meant the p38 one.

The electrical library for both of the D2 ones shows them as the same.

In fact one reputable wrecker thought they were the same unit and was selling them as interchangeable and identical.

[johnp38]

Well shack out of amateur curiosity what did you do to arthur's beasty to stop the kickdown shenanigans?

Not the nitty gritty details just a laymans explanation, plus now you worked it out you can add that into your tunes for the rest of us that want to use V8 tcu in our td5s.

I got a tl866ii programmer and can read the 29c1024 in my MSB 101 192 but can't copy it to a blank 28f102

another forum member had no luck either, I do have some blank 27c1024 on the way but they are only one time programmable and I was trying to avoid that because I am sure I will muck up a lot learning/burning them.

The 29c1024 is actually meant to be a multi x reprogrammable version of the 27c1024 but I aint going to screw the file on it by experimenting and my current programmer hasn't got it on its compatible list anyway.

[shack]

Well shack out of amateur curiosity what did you do to arthur's beasty to stop the kickdown shenanigans?

Not the nitty gritty details just a laymans explanation, plus now you worked it out you can add that into your tunes for the rest of us that want to use V8 tcu in our td5s.

I got a tl866ii programmer and can read the 29c1024 in my MSB 101 192 but can't copy it to a blank 28f102

another forum member had no luck either, I do have some blank 27c1024 on the way but they are only one time programmable and I was trying to avoid that because I am sure I will muck up a lot learning/burning them.

The 29c1024 is actually meant to be a multi x reprogrammable version of the 27c1024 but I aint going to screw the file on it by experimenting and my current programmer hasn't got it on its compatible list anyway.Hi John,

It's taken a long time to get it nailed- along with other bits and pieces, (100s of hours TBH) and I think the results are great, so no... I don't really wanna give it away!

It should be do able on other units as well hopefully.

What's the fault you are getting trying to write to the reprogrammable chip?

Cheers
James

[johnp38]

Hi John,

It's taken a long time to get it nailed- along with other bits and pieces, (100s of hours TBH) and I think the results are great, so no... I don't really wanna give it away!

It should be do able on other units as well hopefully.

What's the fault you are getting trying to write to the reprogrammable chip?

Cheers
James

That's why I asked only for laymans reply. Not nitty gritty of how to do it coz I don't want you giving it away either !

Kinda like ' I made an adjustment to the signalling from ecu to tcu which can be done without changing your current fuel tunes ' or sumfing simple like that.

There is no fault it doesn't support writing to either the 29c1024 or the 28f102 (I was unaware and price sensitive when I purchased) which would be cheap as I could keep rewriting my tune adjustments into the same chip till i got them right (I don't know how to tune mind you, let's not let that get in the way for now)

I should have purchased the T56 programmer

Mine does do the 27c1024 single shots, so have got 3 on the way.

My aim is not to alter my fuel tunes just to properly turn off egr or load my existing fuel maps into files with no egr from factory and get enough of an understanding of 10p tables to run a mafless tune if the maf is truly only for egr and not relied on for auto box changing as well.

What hex reader are you using to open tune files?

[shack]

Hi John,

I essentially remapped the maps that the EAT uses for shift points and Lock unlock of T/C based on road speed etc.

On an EU2 there is not really any reason to try and run without a MAF, if you want you could just unplug it.

The TRS ECU will not have the EGR turned off, they didn't touch it on the ones I've seen.

I'm not really sure what improvement turning that off will show if it's already physically removed.

I'm thinking not much, as the EGR map would only be letting flow into the intake under lighter throttle scenarios, but of course it doesn't do anything when blocked off, so normal engine fuelling will continue, then of course when you want more power, it's largely "turned off" by default anyway.

But it would get rid of the EGR fault you are most likely getting.

I'm not trying to talk you out of trying, but just don't expect great improvement!

Just note that a vehicle with the EGR installed and still functioning correctly, should use less fuel.

Any decent hex editor should do the job, the one I use is called "Hex edit" but it's no longer available and I couldn't find it online.

Cheers
James

[johnp38]

i'm not getting any egr errors

what you said is about properly functioning egr being better for economy is what I have read, so by transferring my trs fuelling map to a factory no egr map must make a difference however tiny.

Plus it is a learning curve.

I have downloaded hex editor neo and another one called HxD, not opened fueling maps yet, just trying to understand the support list for the tl866ii programmer as apparently it may be possible to add in the missing chips by modifying its chip table

Long long long learning curve, can see the hex tables with binary next to each line but can't see the plain english listing of the chip which apparently can be seen once I find the right menu selections

The examples online seem to be written by people who know, for people who know already how to use the hex editors.

oh well, that's the fun of it, very satisfying once I crack it, then I will be at the level of todays 10 yr old primary school geek.

[shack]

No EGR errors?

That's interesting.

What fuel tune are you running?

It'll be Something like Suhde018

Cheers
James

[johnp38]

No EGR errors?

That's interesting.

What fuel tune are you running?

It'll be Something like Suhde018

Cheers
James

MSB 101 340 in vehicle, TRS whatever level they put in tune

config sutdp007

fuel suhde022

I get no ecu tcu bcu issues /errors and after i did the shuttle valve rewire no intermittent 3 amigos (lights were blacked over when I got it)

[DazzaTD5]

Made me look ya dirty chook

Which pair ? Can't find em

the tcu CAN bus pair go to different numbering on the ecu end of the loom depending on V8 or Td5 engine, can't spot any difference on tcu pin out for V8 or Td5


I *think* that was a misstype.

I *think* he meant the p38 one.

The electrical library for both of the D2 ones shows them as the same.

In fact one reputable wrecker thought they were the same unit and was selling them as interchangeable and identical.

YEP...
*I know I've read about owners changing the TCM over from one to the other but it's not worked for me.
*On the odd occasion where I've fitted a auto trans from a TD5 to a V8 (not a simple bolt in exercise) it wouldn't shift correctly with the V8 TCM but once I fit the TD5 TCM it shifted correctly.

*I've no doubt missed something but I've not worked it out.

[shack]

YEP...
*I know I've read about owners changing the TCM over from one to the other but it's not worked for me.
*On the odd occasion where I've fitted a auto trans from a TD5 to a V8 (not a simple bolt in exercise) it wouldn't shift correctly with the V8 TCM but once I fit the TD5 TCM it shifted correctly.

*I've no doubt missed something but I've not worked it out.Some time ago when I was looking through RAVE I followed the diagram and came to the conclusion that they were wired differently between TD5 and V8...but less long ago I had another look and realised they were wired the same but the connector numbers were different between the 2, that's what confused me.

A TD5 controller in a V8 would be a thoroughly unpleasant thing, and the same the other way unless a reasonable upgrade to tuning has been made.

As regards the different autos changing differently, I can't help out there.

Cheers
James