Anyone familiar with TCI handheld controllers for auto?

[XfireZ51]

The DD unit is for the speedo and ECM. Likely comes after TCU.

[Pete]

You can tap into one of the wire at the speed sensor i just can't remember which one.
I have my notes somewhere just need to find them.LOL

You can change the rear seal without having to take trans out.
On your cruise control also check the vaccum/switch at the clutch padel.
Pete

[WVZR-1]

Hey Pete,

Never mind the VSS question.

Couldn't you just use the instrument panel and the DIC to check the CCM for errors and also for possible other faults that they may have created. The VSS signal is distributed to the cruise and the cluster from the CCM. Correct? There's errors and problems at the cluster and also the NO cruise.

[Pete]

Originally Posted by WVZR-1

Hey Pete,

But with the Dakota Digital is the one in the trans just filling the hole acting as a "cork"! Did they use the later "reluctor based" for the "cork" and just cut/splice
a connector that fit to make it look "finished"! The conduit looks all funky with the extreme length of tape.

There should be no reason for two VSS systems or should there?

No TCI does not need two VSS signals.
What i would suggest connect the TCI saperate from the Dakota.
Why did they install the Dakota did he do a rear gear change.
I'm pretty sure TCI can handle the speedo calibrations.

Pete

[WVZR-1]

Originally Posted by Pete

No TCI does not need two VSS signals.
What i would suggest connect the TCI saperate from the Dakota.
Why did they install the Dakota did he do a rear gear change.
I'm pretty sure TCI can handle the speedo calibrations.

Pete

I'm guessing that because the 4L60E uses a reluctor wheel and pick-up based speed sensor, rather than do the drive/driven gear install they opted for the DD unit. I didn't think it needed to be as complicated as it is. I mentioned my thoughts on the drive/driven a few posts ago. I've never compared the ID of a drive gear to the reluctor wheel to see if it could have been fitted.

[WVZR-1]

In this image look at how much of the slip yoke is exposed and we can't even see the tail-shaft housing. That's just not the way I've fitted slip-yokes to a transmission. It looks excessive to me.

[Schrade]

OK - still trying to do pinout ID + trace, focus right now on speedo output FROM the module.

It does NOT appear to go to the DD module, although the 2 wire taps are visible at the bottom of the snappic (not ID'd yet)...

[Schrade]

No gear change Pete; I don't know why the DD is in there...

Line 24 exits the TCU, and is split. One lead to nowhere:



and the other, through the floorboard, to the Twilight Zone.



Huh?

So the speedo signal path MUST be gettin' 'intercepted' going INTO the TCU, DIRECTLY FROM THE TRANNY???

and feeding signal to the DD? And then out to ???????????

and now I think I remember one little one [->going back to <-] the tranny..........

[XfireZ51]

The DD unit is strictly there so the ECM can interpret the VSS signal from the TCI trans. Really has nothing to do with the operation of the trans.

[Schrade]

So we have to back up in the signal path, to find the problem in the speedo.

Start AGAIN (presumably) at the Output Shaft Speed / pickup? on the right side of the schematic?

And both leads are split.

So let's go the DD, and see what those 4 leads go to ... (voltage, ground, signal 1, and ? )

Originally Posted by Schrade