Member Since: 19 Jun 2021
Location: London
Posts: 80
*Transmission Fault - Special Mode Not Available* (Again)
Hi All,
So on starting the engine, 98% of the time, I get:
*Transmission Fault - Special Mode Not Available*
The odd 2% is works, no rhyme nor reason, often only works for a couple of minutes.
Things I've tried:
- New Battery
- New (second hand) TCM, two different ones. Upon fitting I did the calibration through the IID tool, and still nothing.
I had some fault codes on the IID, I cleared them, and no new ones come up?! It's been months since I cleared them and not yet returned.
My raise/lower toggle also does not work, through the IID I can raise and lower the car no problem.
Slightly at a loss here, and torn as car has a low value so don't want to take to a garage and fork out the big bucks!!
Thanks All
2nd Feb 2023 4:03 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13670
Hi
May I ask does ur suspension lever have a light showing plse , if not I wonder if maybe a drink has been spilt onto the switch assembly leading to the pcb underneath , seeing the high/ low transfer case switch is also next to it
Using the iid have u tried to reactivate the suspension system in order for the light to come back on
Thinking if it would be worth lifting up the suspension/ high- low panel and checking all the connections to ensure all the pins are all ok
Would also check to ensure there arnt any oil leaks from the mechatronic sleeve connector , plus checking to ensure the new battery was fully charged before hand and reading a min of 12.6Vdc with the engine off
Can u remember what the codes were plse , must confess I always send mine to my email and then clear them
Hope that helps in a small way
2nd Feb 2023 5:39 pm
DiscoKick
Member Since: 19 Jun 2021
Location: London
Posts: 80
Re: *Transmission Fault - Special Mode Not Available* (Again)
Lawis wrote:
Hi All,
So on starting the engine, 98% of the time, I get:
*Transmission Fault - Special Mode Not Available*
The odd 2% is works, no rhyme nor reason, often only works for a couple of minutes.
Things I've tried:
- New Battery
- New (second hand) TCM, two different ones. Upon fitting I did the calibration through the IID tool, and still nothing.
I had some fault codes on the IID, I cleared them, and no new ones come up?! It's been months since I cleared them and not yet returned.
My raise/lower toggle also does not work, through the IID I can raise and lower the car no problem.
Slightly at a loss here, and torn as car has a low value so don't want to take to a garage and fork out the big bucks!!
Thanks All
Aha yes I did email them actually, good thinking!!
GAP did say to me via email:
VIN fault is irrelevant, will work with it. If its not working, it either needs an update and a calibration or just a calib.
Quote:
Engine TDV6
P0100-00 (2F) Mass or volume air flow circuit
Parking Aid
B1B48-96 (6C) Rear left outer sensor - Component failure - internal failure
B1B50-01 (6C) Rear left inner sensor - General failure information - general electrical failure
Parking Brake
U0101-87 (A8) Lost communication with transmission control module - Bus signal/message failure - missing a message
( at 232098 km )
Transfer Case
P0806-00 (2F) Clutch position sensor - circuit range/performance
( at 232098 km )
U1A35-4A (2F) VIN data - System internal failure - incorrect component installed
( at 232098 km )
Ventilation
B1B74-00 (2E) Front foot-defrost mode stepper actuator
( at 232098 km )
B1B75-00 (2F) Front foot-face mode stepper actuator
( at 232098 km )
B1B76-00 (2F) Front left air blend stepper actuator
( at 232098 km )
B1B77-00 (2F) Front right air blend stepper actuator
( at 232098 km )
B1B78-84 (2F) System pressure - Bus signal/message failure - signal is below allowable range
( at 232064 km )
Regarding the light for the suspension, the Bar light is present and correct.
High / Low range selection does work.
I have removed the panel and had a quick look, it looked 'ok' but I can't say I really investergated throughly.
I've not come accross the mechatronic sleeve connector you mention, something to investergate.
I'll check the battery tonight, and if anything less than 12.6 pull off to charge inside.
2nd Feb 2023 6:19 pm
DiscoKick
Member Since: 19 Jun 2021
Location: London
Posts: 80
I've ran it again just now, and have a different bunch of faults, gosh it's a long list haha:
Audio System
U2003-31 (28) Fibre optic communication bus - Frequency modulation/pulse width modulation failure - no signal
( at 233584 km )
U2003-25 (28) Fibre optic communication bus - General signal failure - signal shape/waveform failure
( at 233556 km )
Body Control
U0155-87 (28) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
( at 233550 km )
U0300-55 (68) Internal control module software incompatibility - System programming failure - is not configured
( at 233550 km )
Engine TDV6
P0100-00 (2F) Mass or volume air flow circuit
Instrument Pack
U0010-87 (28) Medium speed CAN communication bus - Bus signal/message failure - missing a message
( at 233556 km )
Parking Aid
B1B48-96 (2F) Rear left outer sensor - Component failure - internal failure
B1B44-96 (28) Rear right outer sensor - Component failure - internal failure
B1B50-01 (2F) Rear left inner sensor - General failure information - general electrical failure
U0155-87 (28) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
U0140-87 (28) Lost communication with body control module - Bus signal/message failure - missing a message
U0300-55 (28) Internal control module software incompatibility - System programming failure - is not configured
Parking Brake
U0101-87 (A8) Lost communication with transmission control module - Bus signal/message failure - missing a message
( at 233564 km )
Transfer Case
U0155-87 (28) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
( at 233556 km )
Vehicle Dynamic
U0155-87 (08) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
( at 233556 km )
Ventilation
B1A74-18 (6C) Right seat heater - General electrical failure - circuit current below threshold
( at 233592 km )
B1B78-84 (2F) System pressure - Bus signal/message failure - signal is below allowable range
( at 233514 km )
For the battery I have a good 13v from the IID when the key is on first turn, when it's all the way round, but car not started, it drops a little, but I do suppose that's as the radio and lights are running.
2nd Feb 2023 9:40 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13670
Hi
Many thks for the codes , sorry asking but is that after u cleared everything and then re scanned it plse
Plse check that fuse 17 is in the engine fuse box , think it’s a 15 amp
Do u also have a multimeter plse as can then progress on checking the MAF sensor and doing a canbus test if needs be
Will be interesting to see what comes back after everything has been cleared and if that fuse is there
Hopefully this helps in order to get it back up and running without to much hassle
3rd Feb 2023 9:10 am
DiscoKick
Member Since: 19 Jun 2021
Location: London
Posts: 80
Thank you,
Sorry no, that's all codes, including some from when I had it running with the radio out, hence those.
I shall, tonight in this order: (A reminder for me as much as anything haha)
Check fuse 17
Clear codes
Check codes again,
Yes have multimeter, will look at youtube videos on checking this.
Thanks again and will update soon,
Lewis
3rd Feb 2023 10:39 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13670
Ur so very welcome
That’s great and many thks , indeed plse see how u get on with the fuse and see what codes come back
Enclosed a wiring diagram of the MAF connector for u, pin 1 , so with the multimeter can then see what Vdc u have , should be around 12 Vdc and on pin 3 which is ur iAT that should be 5 Vdc
Plse feel free to ask if u want any more wiring diagrams or workshop manuals etc
Lol, ref the list , same in what I do , Fingers crossed we can find the issue
Click image to enlarge
Last edited by gstuart on 4th Feb 2023 11:03 am. Edited 3 times in total
3rd Feb 2023 4:27 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13670
Forgot to say, if u ever wish to test the canbus with a multimeter the following can be used
With both battery leads disconnected from the battery posts, Multimeter set to ohms, ( TP Is just short for test probe from ur multimeter)
TP to pin 6 other TP to pin 14 , read ohms
TP to pin 3 other TP to pin 11, read ohms
Hope that is also useful to u
3rd Feb 2023 4:29 pm
DiscoKick
Member Since: 19 Jun 2021
Location: London
Posts: 80
Alrighty!!
So checked MAF, get 5v and 12v as we wanted.
Fuse 17 all good, visual check, and continuity check
I'll pull the battery to charge overnight anyways, and when I do, I'll check the canbus as you say.
Reset codes, and read again, only now have the following which is more confusing. The screen did display the usual 'Trans Fault modes not available...'
Started it, drove a little and still only codes.
Engine TDV6
P0100-00 (2F) Mass or volume air flow circuit
Parking Aid
B1B48-96 (2F) Rear left outer sensor - Component failure - internal failure
B1B50-01 (2F) Rear left inner sensor - General failure information - general electrical failure
Ventilation
B1B78-84 (2F) System pressure - Bus signal/message failure - signal is below allowable range
( at 233668 km )
3rd Feb 2023 7:16 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13670
Many thks , alas many of the codes can just be historical , great it’s narrowed the field down a bit, lol
Might be the case of having to check the air inlet associated pipe work , etc to ensure there are no air leaks, including that rubber seal that’s on the rh side of the radiator where the air ducting pipe joins onto the other pipe leading onto the turbo
However to save time thinking it may be beneficial to get the live data of the Maf and the Map sensor plse Sorry asking , but have u cleaned the MAF & MAP sensors and checked the air filter is clean plse , thks
Also included the pin layout of the OBD2 port
Indeed will be interesting to see what the canbus and live data readings are
Click image to enlarge
4th Feb 2023 3:17 am
DiscoKick
Member Since: 19 Jun 2021
Location: London
Posts: 80
Thanks mate!
I didn't get a chance to remove the batter in the end last night, was too busy trying to install the reversing camera, which I got working, but not coming on automatically when the screen is in RR mode.
Will try again this afternoon when I'm back from work.
I've got a new air filter here anyways, so I'll fit that and see if that makes a difference, checking for air leaks whilst I'm there. Clean the sensor, fit, get live values and take it all from there!
To confirm, we're thinking that the MAF sensor is somehow causing the transmission error?
All the best,
Lewis
4th Feb 2023 11:39 am
DiscoKick
Member Since: 19 Jun 2021
Location: London
Posts: 80
6 ton14 60ohmd
3 to 11 also 60
More to follow just writing so I don’t forget!!
5th Feb 2023 2:56 pm
Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815
If you have a transmission fault, the TCM is likely involved, yes i did read you changed it, BUT did you check ALL the little connectors inside the bigger 2 plugs?
The TCM is mounted in a place prone to have water ingress… and the connectors are easy corroded or bent easy… cleaning them inside is rather difficult… but corrosion needs to be removed and the tension on the plugs need to be enough to make good contact….
Yes i know it is a disaster to work there, battery in and out and in and …..Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
5th Feb 2023 3:08 pm
DiscoKick
Member Since: 19 Jun 2021
Location: London
Posts: 80
Thanks mate, appriciate the comment.
I did on the first time check, and I cleaned the connectors up, and applied a small amount of this stuff:
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