Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 109
lost communication with transmisstion control module
Hi,
if I check the fault with IID I get alwals the fault U0101-00 (2) Lost communication with transmissioen control modul.
It's a D4 from 2009, 2.7l, manual transmission.
Haven't noticed any effects yet. What is it, can it be fixed?
Thomas
13th Nov 2022 4:25 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
Which module is it stored in?
13th Nov 2022 5:22 pm
Shamrock
Member Since: 16 Jun 2022
Location: South Kerry
Posts: 114
Hi !
The most possible cause is a weak battery. When the voltage of the battery fall down under a certain value, there are some lost of communication with some modules (i.e. EPB).
Never had the message "Low battery - Please start engine" ?
13th Nov 2022 5:35 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
He doesn't have a TCM, that's the problem! It's probably a coding issue in whichever module is reporting the DTC.
13th Nov 2022 5:36 pm
thomasz
Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 109
Flatlander wrote:
Which module is it stored in?
IPC-Instrument Pack
13th Nov 2022 6:39 pm
thomasz
Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 109
Shamrock wrote:
Hi !
The most possible cause is a weak battery. When the voltage of the battery fall down under a certain value, there are some lost of communication with some modules (i.e. EPB).
Never had the message "Low battery - Please start engine" ?
No, never the message about a low battery.... (its a new battery by the way)
13th Nov 2022 6:40 pm
grzesiul
Member Since: 11 May 2008
Location: UK
Posts: 6415
it is not permanent DTC codde so clear and forget
13th Nov 2022 6:51 pm
thomasz
Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 109
Quote:
it is not permanent DTC codde so clear and forget Wink
Error keeps coming back, but as I said, I haven't felt any consequences yet. I always delete it too..... and as you say: forget it....
13th Nov 2022 6:53 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
thomasz wrote:
Flatlander wrote:
Which module is it stored in?
IPC-Instrument Pack
Do the selected gears display OK? it does look like the IPC copy of the CCF is incorrect, it shouldn't be looking for the TCM.
13th Nov 2022 7:14 pm
thomasz
Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 109
Quote:
Do the selected gears display OK?
Manual gearbox..... no info in Display.
13th Nov 2022 7:19 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
There should be! - sounds like that's the issue, IPC not coded correctly therefore not displaying selected gear and throwing a 'lost comms to TCM' DTC.
13th Nov 2022 7:35 pm
thomasz
Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 109
With manual gearbox a info on Display show the actual gear too? Sure?
IPC not coded correctly
you mean ccf with IID ?
13th Nov 2022 7:41 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
Hmm... The Disco3 definitely shows manual gears, I honestly can't remember if the Disco4 does or not and I can't find any mention of it in the later Disco4 owner info manuals - although there's no mention of the manual gearbox either to be honest!
The CCF is stored in the BCM & the IPC, not sure if IID can switch between the two, generally the 'master' is stored in the BCM with the backup in the IPC. Personally, I'd check the IPC version is correct and copy from the BCM if not - but I don't use IID so can't help you with that.
13th Nov 2022 8:24 pm
thomasz
Member Since: 01 Oct 2021
Location: Kulmbach
Posts: 109
Quote:
I can't find any mention of it in the later Disco4 owner info manuals - although there's no mention of the manual gearbox either to be honest!
Me too.....
Quote:
The CCF is stored in the BCM & the IPC, not sure if IID can switch between the two, generally the 'master' is stored in the BCM with the backup in the IPC. Personally, I'd check the IPC version is correct and copy from the BCM if not - but I don't use IID so can't help you with that.
I am afraid that this will not work with IID.
How can I check the version in IPC?
14th Nov 2022 4:46 am
popsdosh
Member Since: 09 Nov 2009
Location: cambs
Posts: 442
There are very few d4s with manual boxes they were at the very start of the model and maybe using up D3 bits and pieces as some also had 2.7 lumps in . In that respect they need treating as a D3
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