Saturday's experiment.....FY33 TCU in a G50

[3Q Jay]

Drew made me a good deal on a '97 TCU, so if nothing else it would be a spare....., but as i posted sometime back, one thing i really like about the FY33 around town is that when slowing down to say 20-25 and making a rolling right turn, the 33 is already in 2nd with no intervention, while the G50 has to be pushed to downshift out of 3rd until almost a dead stop.so, i did some reasearch on the pin outs, found a few differences, but nothing that looked essential, and decided to play with it.......it's not suitable in a G50.in my case, i got an ACTSUS lite, which wouldn't bother most, but the gating of the shifters turns out to be significant.'D' on the G50 console selected 1-2-3-4 and 4-3-2-1 full auto using the 33's TCU, but no manual control of 3-4 and 4-3 (missing OD button). Further, selecting '3' on the G50 console put the trans into 1-2 and 2-1 but locked out 3 and 4. likewise, '2' was solid 1st gear. the slide over to '1' made no difference from '2'.

as an aside, the shiftpoints came much earlier for a given throttle position, although TPS voltage would modulate the shift points like you'd expect.

when Bowen was hanging here i would bug him from time to time about programmable TCUs, but he wasn't interested. now if i could only talk Wes or Shane into it......

[elwesso]

From what I understand, the TCU's would have to be completely proprietary. Theres no chip that can be reprogrammed (theyre obsolete) and theres no guideline on how to reprogram it. Major PITA.

Get a high stall torque converter and you wont have any of these problems.

[Q451990]

Nice to know... you've got a big pair plugging that in to see what happens!

Heath

[DrewQ45]

Nice to know... you've got a big pair plugging that in to see what happens!

Heath

Yeah... personally, I wasn't gonna try it. The Q is now my only means of transport since my truck got totalled a few months ago. Good info to have though. Thanks for sharing Jay. Lemme know if you need anything else down the line.

...Drew...

[sijoko]

Drew made me a good deal on a '97 TCU, so if nothing else it would be a spare....., but as i posted sometime back, one thing i really like about the FY33 around town is that when slowing down to say 20-25 and making a rolling right turn, the 33 is already in 2nd with no intervention, while the G50 has to be pushed to downshift out of 3rd until almost a dead stop.so, i did some reasearch on the pin outs, found a few differences, but nothing that looked essential, and decided to play with it.......it's not suitable in a G50.in my case, i got an ACTSUS lite, which wouldn't bother most, but the gating of the shifters turns out to be significant.'D' on the G50 console selected 1-2-3-4 and 4-3-2-1 full auto using the 33's TCU, but no manual control of 3-4 and 4-3 (missing OD button). Further, selecting '3' on the G50 console put the trans into 1-2 and 2-1 but locked out 3 and 4. likewise, '2' was solid 1st gear. the slide over to '1' made no difference from '2'.

as an aside, the shiftpoints came much earlier for a given throttle position, although TPS voltage would modulate the shift points like you'd expect.

when Bowen was hanging here i would bug him from time to time about programmable TCUs, but he wasn't interested. now if i could only talk Wes or Shane into it......

If you want total control over the Q45 trans, then you need this:



http://www.powertraincontrolso....html

Product Description:

The Powertrain Control Solutions, LLC. Universal Automatic Transmission Controller is a fully programmable transmission control system. Through a friendly PC Windows interface users are able to program transmission settings based on speed, engine load, engine speed and other parameters. This powerful unit allows users to control every type of electronic automatic transmission from Ford, Nissan, GM, Toyota, Chrysler and many other manufacturers (ex. Ford AOD-E, GM 4L60E). Automatic transmissions have been mass produced only in electronic versions for many years without a satisfactory aftermarket solution. Finally, Powertrain Control Solutions, LLC. offers a product to control these readily available transmissions both in new vehicles and custom built vehicles. Our unique approach to engineering in this field allows this unit to control all types of electronic automatic transmissions at a low cost. Therefore we are able to produce a unit to control more transmissions and with greater capability than our competition.

Product Specifications:

· Upshift/Downshift button capability (Paddle shifting and Button shifting)· Selectable shifting modes (ex. Power, towing, economy) · Compact Dimensions (5.9in x 4.15in x 1.75in)· Durable 63pin weather sealed circular plastic connector built into case · All components specified for automotive conditions (125 degrees C with fuel, grease, and oil resistance). · 6 PWM Driver outputs (Selectable 12v or ground output) (3amp) · 6 Digital Driver outputs (Selectable 12v or ground output) (3amp) · 4 frequency inputs (Engine Speed, TC Speed, Driveshaft speed, additional speed) · RS 232, CAN (2.0b) communications · 16 Digital Inputs · 6 Analog Inputs · 1 frequency output (speedometer control) · Complete wiring harnesses available for common applications · Custom wiring harnesses available for any application · Easy to use windows software interface · Data logging capability

Currently Supported Transmissions:

Chrysler: ·42LE, 45RFE, 545RFE, 47RE [47RE supported by ATS Diesel] GM: ·4T80E, 4T60E, 4T65E, 4L80E, 4L85E, 4L60E, 4L65E, 4L70E Ford: ·AODE, E4OD, 4R70, 4R70W, 4R100, 5R55 Hyundai: ·F4A22* Mazda: ·R4A-EL Mitsubishi: ·W4A3/F4A3* Nissan/Infiniti: ·RE4R03A, RE4R01A Toyota,Lexus: ·A340E*, A343E*, A650E*, U140F, U240 ZF: ·5HP19

* - requires a customer provided sub-harness to the transmission

[3Q Jay]

Nice to know... you've got a big pair plugging that in to see what happens!

Heath

oh, i wouldnta bet my electrical system on it without checking that all the power and ground points were the same. actually, about the only electrical differences i found were on the active line and the OD switch vs. '1' switch.i should mention that i also got a 'transmission malfunction' in the message window.

Siju, that is what i have in mind--just not ready to plunk down that much coin. do you have this? what about harness? i'm not the type to hackup wire harnesses. seems at a minimum would need the nissan TCU connector to mate to the pigtails.....

[sijoko]

Siju, that is what i have in mind--just not ready to plunk down that much coin. do you have this? what about harness? i'm not the type to hackup wire harnesses. seems at a minimum would need the nissan TCU connector to mate to the pigtails.....

I don't have this but I would like to one day. It would probably have to be spliced in to the existing harness kinda like an aftermarket ECU but it should be an easy proposition. The only way to know is to contact them.