JATCO transmission Mystery??? Please help!

where is hippo on all this,
come on hippo !

Don't forget that the part numbers may be different between the US and Euro versions.

The software definitely is different

td4van said:

Don't forget that the part numbers may be different between the US and Euro versions.

The software definitely is different

Click to expand...

Just wanted to say a quick Thanks everyone for the info.
I used to by on Muddy Oval back in the day and haven't found a good community of knowledgeable enthusiasts since!

Yes I'm hesitant about getting a computer overseas.
Right now the supplier has agreed to take back the transmission we purchased, although we will be out 400.00 in shipping.

We are exploring our options, ideally we would like to get a direct swap, like for like transmission. We are waiting to hear back from a few sources to see if they can get the same Serial Number and Everything matched up perfectly.

If not then I'll explore the additional - newer Transmission Control Unit option.

I'll keep updating this thread - maybe it will one day help somebody else in a similar situation.

No need to send box back or get a new module - I'm 99.9% certain that you can update the software in the gearbox ecu to ignore the intermediate speed sensor

I'll see if I can find some info to confirm for you

vihippo said:

Just wanted to say a quick Thanks everyone for the info.

I used to by on Muddy Oval back in the day and haven't found a good community of knowledgeable enthusiasts since!



Yes I'm hesitant about getting a computer overseas.

Right now the supplier has agreed to take back the transmission we purchased, although we will be out 400.00 in shipping.



We are exploring our options, ideally we would like to get a direct swap, like for like transmission. We are waiting to hear back from a few sources to see if they can get the same Serial Number and Everything matched up perfectly.



If not then I'll explore the additional - newer Transmission Control Unit option.



I'll keep updating this thread - maybe it will one day help somebody else in a similar situation.

Click to expand...

If you want I can find you numbers of people that might have jatco PCM in the usa. I know one place in Canada that has like 4 freelanders.

td4van said:

No need to send box back or get a new module - I'm 99.9% certain that you can update the software in the gearbox ecu to ignore the intermediate speed sensor

I'll see if I can find some info to confirm for you

Click to expand...

Did you figure this out td4van ?

Hi yes.

New software was released which ignored the inter speed sensor. The software needs a later level gearbox ecu fitted but it means that the early cars can be updated to overcome the inter speed sensor issue.

td4van said:

Hi yes.

New software was released which ignored the inter speed sensor. The software needs a later level gearbox ecu fitted but it means that the early cars can be updated to overcome the inter speed sensor issue.

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Awesome. Any details on this? This means flash upgrading the TCM I presume? Does it mean a T4 session or can a TCM be upgraded offline?

Any bulletin number you manged to find so I can try to find it on Topix or elsewhere?

Best bet is a T4 session to update and reprogram the TCM.

Couldn't find a TSB on it but found some old stuff in the garage about it.

If you send me your TCM part number and also if it's a factory original the NNW details off the label I can check what software you have.

I wanted to have a VIN number to go buy as to when this transmission change was made and I found it in the Technical Bulletin. VIN numbers starting with 4A000001 have the "newer" transmissions with no intermediate speed sensors as shown by needing a new wiring assembly.


April 2006
Freelander - Automatic Transmission Service Components
LN307-005



Parts:
Oil Seal CAL500050 1
Oil Seal CAL500060 1
Control Valve Assembly LGH500100 1
Wiring Assembly to 3A999999 TGM500090 1
Wiring Assembly from 4A000001 TGM500110 1
Solenoid Assembly Shift A THT500010 1
Solenoid Assembly Shift B THT500020 1
Solenoid Assembly Shift C THT500030 1
2-4 Brake Timing Solenoid THT500040 1
2-4 Brake Duty Solenoid THT500050 1
Reduction Timing Solenoid THT500060 1
Low Clutch Timing Solenoid THT500070 1
Pressure Solenoid THT500080 1
Line Lock Up Duty Solenoid THT500090 1
Wiring Internal Control Valve YMC506130 1

Updates to my situation here... sorry we're on a tiny island in the Caribbean and everything takes a long time.

This has gone so wrong/long we ended up buying another truck till this get's fixed. I have a feeling we're going to end up keeping it around though as my wife has mentally filed away the Freelander as "tinker toy" and out of the "reliable transportation" category. At least she's proud of her seemingly indestructible '92 Toyota Pickup!


Back to the saga...
I want to thank everyone for the information. I really appreciate this forum and the help it's provided. I really am surprised the 2 dealerships we've contacted have no info on any of this.

Td4VAN do we need a new ECU and TCM?
Or at least newer software?
Would it be possible to ship them to have them reprogrammed, I'm assuming it's an ePROM flash. If that won't work our other option would be to purchase a whole new ECU along with a TCM to match the transmission.
OK just Re_Read eveything looks like i need a T4 session (not entirely sure what this entails but I'm assuming it's the Windows equivalent of erasing all hard drives and re-installing a fresh OS) but is there a way to perform this remotely thru internet?

The new transmission and new"er" TCM have been installed but the TCM is PR008 while the Jatco is marked PR015. Next trip into town I'll swing by and get the info off both modules.

With the PR008 TCM and PR015 Transmission running an ECU programmed for PR005

Were getting codes:
1715 - intermediate speed sensor
and 1775 which I'm not 100% sure what it is

zefrench said:

I wanted to have a VIN number to go buy as to when this transmission change was made and I found it in the Technical Bulletin. VIN numbers starting with 4A000001 have the "newer" transmissions with no intermediate speed sensors as shown by needing a new wiring assembly.

Click to expand...

I think this is where things probably went so wrong for us as our VIN number is a 4A41.. number and it definitely had an intermediate speed sensor.

This maybe why everyone said the transmission would fit as a like for like swap.

vihippo said:

Updates to my situation here... sorry we're on a tiny island in the Caribbean and everything takes a long time.

OK just Re_Read eveything looks like i need a T4 session (not entirely sure what this entails but I'm assuming it's the Windows equivalent of erasing all hard drives and re-installing a fresh OS) but is there a way to perform this remotely thru internet?

The new transmission and new"er" TCM have been installed but the TCM is PR008 while the Jatco is marked PR015. Next trip into town I'll swing by and get the info off both modules.

With the PR008 TCM and PR015 Transmission running an ECU programmed for PR005

Were getting codes:
1715 - intermediate speed sensor
and 1775 which I'm not 100% sure what it is

Click to expand...

Sorry "were" does that mean we were or we are ? that P1715 I would expect you were getting that error due the intermediate sensor no longer being there with the old TCM. If you are getting that error still, then it means your TCM "firmware level" is not high enough.

The P1775 I am thinking it is trwoing that code to register that the Malfunction indicator lamp should be lit.
P1775 Transmission system MIL fault

zefrench said:

Sorry "were" does that mean we were or we are ? that P1715 I would expect you were getting that error due the intermediate sensor no longer being there with the old TCM. If you are getting that error still, then it means your TCM "firmware level" is not high enough.

The P1775 I am thinking it is trwoing that code to register that the Malfunction indicator lamp should be lit.
P1775 Transmission system MIL fault

Click to expand...

Sorry just realized how "unclear" that must of read.
were = We are now receiving these codes.

Just got off the phone with LinDen and he's confirmed that TCM will work with the transmission and no new ECU is needed. He is going to look into it further but suggested perhaps it's just the computer need to learn the shifting points of the new transmission??? I'll update this once he's had a chance to get back to me on it.
Thanks!

Yeah confirmed p1775:



The only rave I found it in is the Spanish version RAVE:
FREELANDER MODELO AÑO 2001
MANUAL DE REPARACIONES -
DESCRIPCION Y FUNCIONAMIENTO DEL
SISTEMA

Publicación pieza No. LRL0351 SPA - 2 Edición



Page 203
SISTEMA DE GESTION DEL MOTOR - SIEMENS (TODOS EXCEPTO DE NAS)

P1775 Bus de la CAN Petición de luz MIL del ECM de la caja de cambios automática


What is strange is its saying the KV6 ECU non NAS would report that P code:
MIL light requested by the Automatic transmission box.


Do you have a NAS or non NAS freelander? Easiest way I know to confirm is to look under the engine acoustic cover and see if you have a trottle wire or if you have a MAF sensor. A picture of that engine bay without the accoustic cover would confirm quickly.

vihippo said:

Sorry just realized how "unclear" that must of read.
were = We are now receiving these codes.

Just got off the phone with LinDen and he's confirmed that TCM will work with the transmission and no new ECU is needed. He is going to look into it further but suggested perhaps it's just the computer need to learn the shifting points of the new transmission??? I'll update this once he's had a chance to get back to me on it.
Thanks!

Click to expand...

The TCM supposedly re-learns its adaptation points when there is any power interruption.

Has the car battery been disconnected yet?

Were the DTC error codes reseted?

What code reader is being used to report these errors?


The P1715 code should disappear if the TCM firmware version is correct. If it does comes back, then the TCM need flashing. So far the only way it seems to use
T4 Testbook Dealership diagnostic system

Or possibly the aftermarket Autologic (not confirmed 100%) (popular with some WV and BMW shops)


The update process is done via keyword 2000 (KWP2000) but my searches on finding aftermarket tools / software to do this have not found anything.

I wander if a place like the ECU doctors in the UK could do this too? (they were mentioned in one of the MG forums)
The ECU Doctor



What island are you in?

I think that all NAS are left hand driven, so if your Freelander is right hand driven, that might help narrow it down. That P1775 sure looks like a non-NAS Siemens 2000 ECU instead of the NAS Siemens MS43 ECU.

I look forward to your confirmation. This will help narrow down the TCM part number you need.

Part numbers of TCM and VIN numbers. There seems a change in mid 2004, is that the Intermediate Speed Sensor removal timeframe?


I also see part number UHC500120 on the Internet but with no reference in Microcat. Strange...

Do you have a NAS or non NAS freelander?

Click to expand...

Yes it's an NAS Freelander. I purchased it new.

Has the car battery been disconnected yet?
Were the DTC error codes reseted?
What code reader is being used to report these errors?

Click to expand...

They disconnected the battery when installing the TCM. I can ask about the code reader.

What island are you in?

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We're on St. John in the USVI. Closest dealership is Puerto Rico and no chance of getting the car there. I have heard of people chipping in and flying a guy over for a week. There's a few Disco's on island that need some work too. There is a LR mechanic on Tortola but I've been told by previously mentioned Disco owners that it's the guy in PR is better.

I have a few meetings today but will drop by the repair shop and take some snaps of the ECU and both TCMs.

Part numbers of TCM and VIN numbers. There seems a change in mid 2004, is that the Intermediate Speed Sensor removal timeframe?

Click to expand...

Yes the change was mid 2004 and I called 2 dealers to confirm before buying the transmission. The problem is the VIN number range they gave does not line up with the changes.
My VIN is 4A418358 with int. speed sensor the VIN of the transmission w/o the speed sensor is 4A440132

Do you think this could be a problem with the ECU not recognizing the newer firmware of the TCM?