How to control Toyota 343 auto?

[Mattmannz]

My Surf has a 1UZFE with a Link ECU and a R151 trans.

I am contemplating converting to an automatic, there are plenty of trans available from the 3L V6 and 3L diesel motors around here.

My question is how best to control the trans? I have heard of a few people manually wiring them up so they are a full manual however I would quite like the full auto option as well.

I had heard that there was one model of 1UZ that had a separate trans computer, if so could this be wired up to control the trans without too much drama?

Cheers
Matt.

 

[Peewee]

Factory UZS131 Auto ecu will not work directly with an aftermarket ecu, as there are a couple of wires that run from the factory engine ecu to the auto ecu.
You may be able to get it working with a box of tricks to emulate the engine ecu's signals, but I don't think anyone makes these yet.

Depending on how many solenoids the autobox has, you will be able to control it manually with buttons. But that requires a box of tricks of its own.

 

[Mattmannz]

Thanks for the reply.

Does anyone have the wiring diagram for the factory auto ecu? I could then work out what the inputs are and possibly duplicate them.

The full manual option shouldn't be that difficult to sort out, a bunch of relays and some buttons should allow me to control the 1-4 gears.

I really want a full auto option though if possible.

Cheers
Matt.

 

[Denkigroove1]

i'll see if i can get a pic up tonight

 

[Denkigroove1]

is this what you were looking for?

 

[Mattmannz]

Thanks for your reply but the picture isn't displaying correctly.

Cheers
Matt.

 

[Denkigroove1]

PM me your email i'll send it to ya and whatever other things ya need i have the whole manual online (tough find, then again the thing is huge)

 

[Mattmannz]

Your profile doesn't allow anyone to email or PM you.

Cheers

 

[Denkigroove1]

lol wow well rather than go through the board headache my email is [email protected]

 

[sideshow]

the wires from engine to auto ecu are data wires

i doubt u will find what signals go down them to easily

yr best bet is to get a 7mgte auto ecu and wire it up
still wont be 100%

only thing thats 100% will be an aftermarket ecu fopr the auto
but that will cost you nearly as much as the engine ecu

 

[Mattmannz]

Thanks Sideshow.

I still don't have a wiring diagram yet so not sure how many wires go to the auto ecu but I would be suprised if there was too many and wouldn't have thought the signal's would be hard to replicate.

Will have a look once I get a diagram and see if I can work it out.

Worst case, I might have to sell my Link ECU and convert to a standard ECU.

Cheers
Matt.

 

[Jafa]

How about this Matt? Reakon its what I'm gonna use

http://awshifting.com/