Is the tranny input speed sensor not used on the 1617427?

Here are the pin outs.

www.nwstp.com/4l80e/16197427/95pcm1.jpg
www.nwstp.com/4l80e/16197427/95pcm2.jpg
www.nwstp.com/4l80e/16197427/95pcm3.jpg
www.nwstp.com/4l80e/16197427/95pcm4.jpg

I have looked them over 10x, had someone else look it over.

No sign of any input speed signals, yet the 4l80e has the sensor.

What am I missing?

 

Just noticed on the 16171199 ecm pins f2 and f3 are input speed.

wonder if the diagram is wrong, or just not used on that ecm.

 

F13 on the last page (95pcm4.jpg)?

RBob.

 

That is what I was thinking... the output goes to f12 and the input to f13.... Might have to look at the code hack or an exisiting setup to figure it out.

 

You asked this question before. Remember? https://www.thirdgen.org/techbb2/sho...hreadid=295646

 

But that is the output or VSS signal.

Not input shaft of tranny.

We noticed on the 16171199 ecm, f2 and f3 are the input shaft speed.

Am I still missing something?

I had from the previous post f13 coming from our stock DRAC which is connected to VSS or transfercase speed sensor (AWD)

 

Sorry, from the way you first worded the question at the top of this thread, I misunderstood you. Is this what you were asking. From the 4L80E section of the manual.

 

Here is what I'm showing for a 1995 c2500 350 4L80-E truck.