Torque converter control NL

[motorazr]

I have been tossing up whether to install a torque converter control and emailed wholesale automatic transmissions to see if they had a kit for the NL transmission.($595)
I received a reply that they could put one together but they don’t have any accurate wiring instructions with pin outs so could not supply me with any installation instructions.
Can anyone assist with the pin outs required to do this TCC install.

1998 3.5lt sohc w45 6g74

[nj swb]

I have been tossing up whether to install a torque converter control and emailed wholesale automatic transmissions to see if they had a kit for the NL transmission.($595)
I received a reply that they could put one together but they don’t have any accurate wiring instructions with pin outs so could not supply me with any installation instructions.
Can anyone assist with the pin outs required to do this TCC install.

1998 3.5lt sohc w45 6g74

I don't have access to NL wiring diagrams, but if somebody can provide a starting point, I'm fairly certain I can help confirm the correct pins.

Otherwise, if you can find the appropriate Toyota wiring diagram, we might be able to "reverse engineer" the NL pin-outs.

[Patagonia]

You shoud find the workshop manual in www.mitsubishilinks.com.

[motorazr]

Thanks for the offer of assistance, it is appreciated. To be perfectly honest I don’t know what I am supposed to be looking for, it wasn’t explained to me. I have made a search and copied a series of schematics for the ecu and attach them. I don’t know if these are what I need.

[nj swb]

Thanks for the offer of assistance, it is appreciated. To be perfectly honest I don’t know what I am supposed to be looking for, it wasn’t explained to me. I have made a search and copied a series of schematics for the ecu and attach them. I don’t know if these are what I need.

We may be getting somewhere.

Within your PDF there are a number of diagrams for different engines that have nothing to do with your Paj - but that's OK. Page 90-55 for "ELC 4-Speed Automatic Transmission" shows a "lock up solenoid" near the bottom left corner. We need to determine if this circuit matches your Paj.

How?

At the top of the page is a block representing the ECU that controls your A/T. The wiring for the lock-up solenoid is in plug "C-133" at the ECU, and the plug layout is shown at the bottom of the page. First step is to find your A/T ECU, see if it has a 26 pin connector that looks like C-133, then see if Pin 1 is a red wire with a black stripe (wire code R-B).

Note that, while I think it's worth checking, I don't have high hopes. Some stuff on the bottom of the last page suggests this is for the US market, and we all know the US like things done differently...

[stumagoo]

NL auto trans ecu is up above where the clutch pedal would normally be on a manual....

[motorazr]

Thanks guys it will be a few days but I will get back with an answer.

[disco stu]

How do these torque converter controls work? I'm old school with automatics and thought torque converters only worked via the fluid pressure

[v8r]

i wired a simple on off switch to my nl.
the wires were intercepted under the dash above the brake pedal. unfortunatly i cant remember which ones they were and ive now sold that car.
as the jatco doesnt allow lockup in 1st, there is no advantage when doing slow crawls in 1st low but there is some to be had when cruising at speed.. when disabled the trans runs in factory mode, when enabled, its in lockup from 2nd up and as a result, shifts can be harsh at times. i only used it a bit when out on the hwy or fanging it a bit around the place.
if you forget its on and come to a halt, the worst ou get is a little shudder as the trans comes back to first and the TC unlocks..

HTH somewhat

EDIT:
Just going off that diagram posted i mustve interrupted the R-B (red-black, pin 1 in the 26 pin c-133 or pin 12 in the 32 pin C-124) wire from the AT-ECU and IIRC, taking it to 12v gives the TC-LU solenoid the signal to lock.. a bit dusty the memory banks but that sounds about right, best if someone else confirms tho

[nj swb]

Ask Wholesale for the install instructions for whatever vehicle has the same transmission - a Toyota of some kind I would guess. That may also help us confirm we're on the right track.

[DWC]

How do these torque converter controls work? I'm old school with automatics and thought torque converters only worked via the fluid pressure

Your right Stu, they do work on fluid pressure, it's just a solenoid to turn the lockup clutch fluid pressure on/off.

[disco stu]

Beauty, thanks DWC

[Dongskie2]

i wired a simple on off switch to my nl.
the wires were intercepted under the dash above the brake pedal. unfortunatly i cant remember which ones they were and ive now sold that car.
as the jatco doesnt allow lockup in 1st, there is no advantage when doing slow crawls in 1st low but there is some to be had when cruising at speed.. when disabled the trans runs in factory mode, when enabled, its in lockup from 2nd up and as a result, shifts can be harsh at times. i only used it a bit when out on the hwy or fanging it a bit around the place.
if you forget its on and come to a halt, the worst ou get is a little shudder as the trans comes back to first and the TC unlocks..

HTH somewhat

EDIT:
Just going off that diagram posted i mustve interrupted the R-B (red-black, pin 1 in the 26 pin c-133 or pin 12 in the 32 pin C-124) wire from the AT-ECU and IIRC, taking it to 12v gives the TC-LU solenoid the signal to lock.. a bit dusty the memory banks but that sounds about right, best if someone else confirms tho

Is it possible to do it on the wires near the shifter, going to the tranny?

thanks!