A650E auto trans solenoid reader

[ElectronicMan]

I can see that you are into the electronics as well. Your info helped me a lot. That is what i do for a living. I'm busy with new hardware controller to do this one properly. You can look at my website for info on the current hardware. Do you plan to put this in production? I know the controls on this one is difficult but we will win it eventually. There is a few other factors that you need to do to reduce the harsh shift like retard timing on the ECU.

[amichie]

I can see that you are into the electronics as well. Your info helped me a lot. That is what i do for a living. I'm busy with new hardware controller to do this one properly. You can look at my website for info on the current hardware. Do you plan to put this in production? I know the controls on this one is difficult but we will win it eventually. There is a few other factors that you need to do to reduce the harsh shift like retard timing on the ECU.

No plans to put this into production. Just motivated by curiosity etc. I want to get my MX83 Cressida up and running with the 5 speed auto just to be a little different.
Can you send me a link to your website.

[amichie]

Update I now have 2nd gear working. Feels great. Might try and have torque converter lock up in 1st and 3rd gear also.

[George]

amichie if you're not going to put your controller into production, would you consider sharing your control algorithms / hardware diagram some day?

[amichie]

amichie if you're not going to put your controller into production, would you consider sharing your control algorithms / hardware diagram some day?

Yes. No problem.

[George]

Great! I vote for adding this info to the faq section. I think the more guys copy it the cheaper they would sell it. Besides, someone may take your system as a basis to experiment with the 760 series. Which, as it bolts on to the 3UZ as well as the 650's, is likely to bolt on to 1UZ, xJZ as well.

p/s Have you tried reverse position? I know there's some trickery with it, something with line pressure. If done wrong, reverse will engage with a decent delay, and it would disengage after a while

[amichie]

Here's a Pic with the display on. Just gives me a bit of feedback on some of the more important inputs and outputs.

[amichie]

Reverse works fine. I think the actual shift lever and internal valving does the selection for reverse. My controller also activates the appropriate shift solenoids when you move the shifter into rreverse.

[amichie]

Update. It seems it needs a momentary application of the lock up solenoid when going into third also, otherwise it is a very slow gear change into third.The lock up is really solid as even at 30% duty cycle it will cause the car to stall when standing still in third.

I think if I hook up the idl contacts in the TPS to my controller I could have it set up to run in lock up mode on all gears when you step on the gas pedal and unlocked when at idle or coasting.

Who needs torque multiplication when you have the mighty NA 7M-GE.

Next job is to get the speed sensor working.

[George]

with an arduino board, the speed sensor is a walk in a park. Basically you need to divide its output freq. to make speedo show you real speed, not phase of the moon etc. You expect the divider to be anything between 6..12. Integer if you're lucky, rational if you aren't.

[amichie]

with an arduino board, the speed sensor is a walk in a park. Basically you need to divide its output freq. to make speedo show you real speed, not phase of the moon etc. You expect the divider to be anything between 6..12. Integer if you're lucky, rational if you aren't.

OK. I think I will need to use interrupts on this one so that the rest of my program keeps running when it detects an edge of a pulse from the speed sensor.

[George]

of course. Even more, you'd have to write interrupt code as short as possible, preferrably only setting some flag which will be later analyzed in low priority thread (or in the forever loop)