Attention Auto Owners...

[BCX]

Reflash connector on Auto legnums/galants has two pins in it. This means that the TCU is flashable. Blackvr from ozvr4 confirmed that his TCU has a MH7203 on it, and Hotwire has confirmed that reflash connector has two pins (photo provided by hotwire)




now while i dont have an auto myself, i'm keen to get the ball rolling for auto mods...

So if people who have access to a, 5spd auto and openport + ecuflash - here's your instructions:

1. move the the Pin on your Openport Reflash adapter to the next pin over - you can use a small screw driver to get it out
2. open ecuflash, choose 7203 or 7202 (i'm assuming depending on the age, it'll use one of the two processors - and pfl may not even have a H8 like ecus of the same era)
3. read the rom
4. when ecuflash asks for an XML file, just choose manually make a def (or something like that)
5. save the rom and upload in this thread for inspection!
6. move the pin back to where it was, otherwise you might accidently flash a ecu rom onto your tcu

Cheers,
Bill

[foxdie]

Hi Bill, I've also seen a Autobox ECU with a 7203 ECU in it.

I'm happy to assist with this, anyone in the West Midlands area with a slushbox fancy a meet up soon?

[Nick Mann]

[Davezj]

interesting, so the pin you move is the single pin in the reflash connector supplied with the open port 2.0 cable.
when you say move it by one pin is that row or column?

[foxdie]

interesting, so the pin you move is the single pin in the reflash connector supplied with the open port 2.0 cable.
when you say move it by one pin is that row or column?

I'd probably not bother with that, just swap the pins around on that connector. My OP 2.0 Mitsubishi reflash adapter has a 3 pin 2.5mm jack on it, I think maybe that second pin is wired up in the OP 2.0 Mitsubishi reflash adapter but something on the software level needs to tell it to use that pin.

I'll break out the multimeter when I get home tonight.

[BCX]

interesting, so the pin you move is the single pin in the reflash connector supplied with the open port 2.0 cable.
when you say move it by one pin is that row or column?

depends how you look at it i guess... if you check out the photo, normally the OP2.0 cable makes contact with the pin at the 'end' of the connector. you'll want it to make contact with the next pin in the same row (if you looking at the plug horizonally)

I'd probably not bother with that, just swap the pins around on that connector. My OP 2.0 Mitsubishi reflash adapter has a 3 pin 2.5mm jack on it, I think maybe that second pin is wired up in the OP 2.0 Mitsubishi reflash adapter but something on the software level needs to tell it to use that pin.

I'll break out the multimeter when I get home tonight.

Swapping the pins on the car would work. i haven't checked on a VR4, but on the car loom, red/green is for ecu reflash, red/black is for TCU reflash - dont quote me though

As for the OP2.0, it only can output a voltage from the 2.5mm plug, and only uses the tip of the 2.5mm for this. You'll have to physically change something, wether it be the car side or your OP side - as the software nor OP2.0 can do it.

[Confused]

In a couple of weeks I'll have an un-used autobox ECU which was in the Super I've now used as a donor for my Anglia.

I don't have the gearbox it was matched with any more, and I won't be needing it - so I'm more than happy to sacrifice it if it'll help.

Once I've laid my hands on it again, I can send it off for checking

[foxdie]

Hi all, just to confirm, in relation to BCX's photo above, Pin 26 (top leftmost on the attached photo) is for the EFI ECU, Pin 27 (second from the left, top row) is for the INVECS-II (Autobox) ECU.

I've double checked this on wiring diagrams, so it's good, lets start reprogramming these goddam things

[wintertidenz]

There seems to be more VR4s turning up a Pick-a-Part here in NZ... so next time I'm there I can grab an auto ECU for you and send it over if you like.

Not sure when I'm next going there, but I will PM you at that time Bill.

[lateshow]

Ok, if somebody figures a way to get the torque conventor locked up sooner that would be nice (change the locking temperature from 60°C to 25...)

[Hotwire]

TCU succesfuly read - however was unsure if 7202 or 7203, so read it with both.
files attached for all those HEX savvy souls that are going to help Bill crack this nut.

[foxdie]

Thanks Lee, rep added

[Davezj]

Hi all, just to confirm, in relation to BCX's photo above, Pin 26 (top leftmost on the attached photo) is for the EFI ECU, Pin 27 (second from the left, top row) is for the INVECS-II (Autobox) ECU.

I've double checked this on wiring diagrams, so it's good, lets start reprogramming these goddam things

do you have the pin numbering correct on that connector, it is a 12 pin and you are talking about pins 26 and 27.

[foxdie]

do you have the pin numbering correct on that connector, it is a 12 pin and you are talking about pins 26 and 27.

Answered in this post

[Davezj]

seen it and responded
just to say thanks, didn't know if you were keeping up with the other thread.
cheer jason

dave

[foxdie]

I keep up with all threads! I'm a CVR-WHORE!

[BCX]

i've started to disassmble the ROM lee uploaded... will hopefully have something to play with soon. As i dont have a Auto, it'll require you auto guys to double check a few things.

[Hotwire]

Let me know what you want tested bill and happy to do it.
Either pm me for email/phone # or post up required files here
Cheers
Lee

[lateshow]

I just took a look with IDA Pro but cant even see anything related to ROM ID ??? Well I know virtually nothing about these things. I think it would be nice to locate the temp for torque convertor lockdown. Shame its not a map, its a value. 2.88 -2,89 Volts... But nice to see that someone got this !

or is it that TM2225 in the end The ecu id I mean

[lateshow]

By the way, does anyone know: Have they dissassemled TCU for EVO VII GT-A ???