V6 Gearbox ECU

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bukko

bukko

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Seeing as how cheap they are I'm thinking of trying another gearbox ECU.

Is there anything I need to know about these or is it just a case of pulling out the old one and plugging in the new one?

Thanks
 
You need to make sure the part number is the correct one for your engine type and model and also that the software is for your car.

If you send me the part number I can confirm if it's the right one and also if there is the original factory label on the casing send me the software details and I can check what type of engine etc it is for.

Ideally you would need the software updating in the ecu to be sure
 
There have been reports that sometime in 2004 the jatco JF506E for the NAS KV6 lost its intermediate speed sensor. I read similar reports for the Non NAS TD4. Thus the TCM no longer report on that sensor. The actual pins are not even on the connector. I would match the year 2001-2003 automatic transmission with a tcm from those years and 2004-2006 tcm with a transmission from those years.
 
td4van said:
You need to make sure the part number is the correct one for your engine type and model and also that the software is for your car.

If you send me the part number I can confirm if it's the right one and also if there is the original factory label on the casing send me the software details and I can check what type of engine etc it is for.

Ideally you would need the software updating in the ecu to be sure
Click to expand...

That would be great thanks!

The part number I'm looking at is UHC000120.

My car is a 2001 V6 (non NAS).

Brit-car says: "ECU CONTROL UNIT AUTO G/BOX F/L >4A, a replacement part for the Freelander - 1996 to 2006."
$_12.JPG
 
Last edited:
Sorry my access to Microcat is offline.

But I did check ebay and here are all the part numbers I was able to find.

I don't know if the KV6 and TD4 TCM (Gearbox ECU) have the same programming, I only know of the change for the Intermediate Speed Sensor.

UHC500160
UHC500120
UHC500110
UHC000120
UHC000220
UHC000030


I look forward to what td4van says.
 
UHC000120 is suitable for your car and can also have the inter speed sensor software programmed into it.

Different software between US KV6, ROW KV6 and Td4 variants
 
When changing the TCM for the Jatco JF506E is in other cars, for example the Jaguar, there is a specific process to make sure the TCM (automatic transmission gearbox ecm ecu) re-learns instead of using it previously learned values.

transmission compatibility question - Jaguar Forums - Jaguar Enthusiasts Forum

I presume the same is needed with our Freelander, but so far I think this means using a more advance reader

Thus
T4 Testbook

I wonder if any of these advance readers could do the same thing:
Autologic
Blackbox
Lynx
HawkEye
 
The Jag forum isn't a bad link if you want to change your own valves. However don't use cinder blocks as suggested to hold a Freelander up in the air, they are far too likely to crumble under the weight of it!!
 
td4van said:
T4 doesn't have the option of clearing the adaptions in the TCM so I'd be surprised if Autologic did.
Click to expand...

Really it does not? Almost every other application of JF506E I found (the Jaguar, VW and Mazda) made mention of clearing them.

And supposedly those adaptions survive a car battery disconnect.

Any ideas how you are supposed to officially clear the adaptations on a Freelander TCM for the Jatco JF506E ?
 
According to this:
The 75 and ZT Owners Club Forums - View Single Post - Gearbox and Electrical faults - 75 CDT Connoisseur 51 Auto

Originally Posted by 75Connie
IIRC, the advice Grandy is giving you may be very pertinent. In order to resolve the issue, it required the car to have power, and while the car had power, the specified fuse needed to be pulled to effect a reset. I'm surmising here until someone more knowledgeable comes along, but it seems as though the CAN Bus needed to be active. but to see the gearbox as offline in due course, register that fact within its memory and as a result clear the problem. In any case its worth a try to do exactly as he said, IMHO..
Click to expand...

So it seems if we pull that Jatco Transmission fuse and wait a bit while the car is running the transmission will re-learn its adaptation settings.
 
Don't know was one of the shortcomings of the Jatco install in a Freelander. Don't think the TCM software supported a reset via diagnostics.

There is some manual process involving ignition cycles and moving the gear lever in a sequence but I can't find it anywhere any more. Knew I should have archived the info better when I got it years ago!
 
td4van said:
Don't know was one of the shortcomings of the Jatco install in a Freelander. Don't think the TCM software supported a reset via diagnostics.

There is some manual process involving ignition cycles and moving the gear lever in a sequence but I can't find it anywhere any more. Knew I should have archived the info better when I got it years ago!
Click to expand...

Thanks for the word reset, that helped my searches. Could this be it, is there a button under the gas pedal of Freelanders?

1. Put your key in the ignition and turn ignition to the on position (the position right before you start the car)
2. Hold down the gas pedal pressing the button under the pedal for at least 20 seconds.
3. Let foot off pedal and start car. Be sure that you do no turn ignition off because that will void the reset
Click to expand...

from:
VWVortex.com - How to Reset Automatic Transmission
 
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