Manual Mode Help (4t65ehd) newbie

[Bernard Fife]

Davey,

To change the shift button 'hold' duration, use a text editor (notepad.exe or something similar) to find a line in the mainController.INI file (in the tunerstudio project folder) like this:

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shftr_accum           = scalar,  U16,   544,                "",          0.10,    0.00000,    25.0,   1000,        1    ; shifter accumulator - button sensitivity (lower is more sensitive)

and change the 25.0 to something smaller, like 10.0:

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shftr_accum           = scalar,  U16,   544,                "",          0.10,    0.00000,    10.0,   1000,        1    ; shifter accumulator - button sensitivity (lower is more sensitive)

I have made this change to this INI for 2.204 code: http://www.msgpio.com/manuals/mshift/fi ... t_2204.ini

I will make this change for all future releases of the code, including the 4.115 beta code that will be released in a few days.

Lance.

[davey1990]

OK thanks lance that fixed the problem but as normal now I have more issues im hoping you can help with.

Ok long story short the 4t65e the tcc control is suppose to use pwm but I was always just using on&off setup because it was easy at the time, but now I was wanting less harsh engagement. So I set it up to be pwm setting. I didn't remember to put the blocking diode in the wiring. So I think I hurt something because the torque convertor is always look, but in 1st because the tranny isn't plumbed to allow it to lock. My question is do I just need to use one of the spare pwm ports to control the tcc and remember to install the diode in the wiring. or how do I fix the thing I burned out or is the tcc port im using not able to be pwm setup?

Thanks

[Bernard Fife]

Davey,

is the tcc port im using not able to be pwm setup?

The TCC can definitely be used with PWM, see: http://www.msgpio.com/manuals/mshift/V22tune.html#nc It does need a diode, as you noted.

do I just need to use one of the spare pwm ports

You can certainly do that, see: http://www.msgpio.com/manuals/mshift/spareport.html You will want to use TCC mode, set up a PWM table, and be sure to install a diode across the solenoids leads as you say.

Lance.

[davey1990]

Ok I would like to fix the problem I burned out. Is there a good way to figure out what burned out? I am assuming its the transistor in Q2 that is probly shorted out.

The reason I would rather fix the short is because I don't quite understand how to set up tcc using the spare port option. I don't understand the table im needing to set up and the normal tcc settings still are used? It just just seems similar to fix the problem I caused

Thanks
David

[Bernard Fife]

David,

Because I haven't burned this circuit (PWM2) out, it's hard for me to say what might be broken and how you might fix it. If this was mine, I would start with a schematic (http://www.msgpio.com/manuals/pwm.htm) and a digital multi-meter (or ideally an oscilloscope) and trace the signal from the CPU pin to the transistor, and then the load path from the Ampseal pin (#32) to ground through the transistor.

You need to make sure you have continuity (~0 Ohms) between the various points of the circuit that are connected by traces, and that none are shorted to ground (except for the emitter of the transistor - pin #3, of course).

Setting up a spare port for TCC control isn't too hard, once you understand what it is doing. Basically, when it is in TCC mode, a spare port is ON whenever the TCC settings (speed, load, etc.) say it should be on. And the spare port is OFF whenever the TCC setting say the TCC should be off. So in TCC mode, all the regular TCC setting still apply, but there are a few additional settings, an ON table and a single OFF value:

-> The table sets the PWM percent when the TCC is ON. If you want the TCC PWM% to be 70% at all times the TCC is applied, you can set the entire table to 70, if you want. Or you can set them all to 100% if you don't want PWM at all on the TCC.

-> The OFF value is the PWM% when the TCC should be off, normally 0%. The OFF value was included so that users could invert the signal if they wished by filling the table with zeros and specifying 70% for the off value, in our example.

Lance.