Need a wire diagram to see which pins/wires correspond to pins N, R, P on the TFP switch assembly.
Need a wire diagram to see which pins/wires correspond to pins N, R, P on the TFP switch assembly.
This switch is internally in the A4 trans right? The wires are connected with the 15 or so pin round connector on the right side of the transmission?
That's correct, it's inside the bottom pan, just above the fluid filter, and the wires goto the thru-case connector (yep, on RHS of case, a little to the rear of the 2/4 servo).Originally Posted by 91LS1S10
You have a 4L60E, right...?
The 4L80E is slightly different (and it's Tech Guide has a few typos on that page).
I got the 4L60E, I got the wiring harness from Street and Performance and they have a 4 pin connector thats called the trans range switch and they told me not to connect it to anything. It's connector 30 at http://www.hotrodlane.cc/PDFFILES/ls...icharness2.pdf
May have to experiment with it.
The PID for reading the manual range switch is GM.PRND or GM.PRND321 or something like that;
(it is not GM.GEAR which tells the current gear).
The actual pid is GM.TFPSW, it follows correctly when I shift the shifter.
GM.PRND is always stuck on D4. I compared them with my 2000 Silverado and the Silverado changes accordingly to what gear your on. Do you think the 4pin transmission range connector be connected to something like a shifter gear selector? I also tried opening the CKP screen, then shutting off the ignition, then restarting the engine, clicked on the CKP learn button and got this error (Bidirectional control rejected by the controller: Transmission in gear. ($1101).
That connector is for the rear plugin portion of the PARK/NEUTRAL switch. I had the same issues with a PCM swap. On mine I had to ground C1 pin 32 and 34 DURING the crank relearn procedure, so that the PCM thinks it is in PARK. If your trans has this PARK/NEUTRAL switch plug the connector to it and try the relearn. Mine was for a 01-02 Express Van PCM #12200411-LS1 type PCM into a 98 GMC
Finally got it work, CKP Relearn is looking at pid GM.PRND. C1 pin 32 and 34 has to be grounded. Pid GM.TFPSW is looking at the internal pressure switches in the trans. After all that it was actually easy once you get the right stuff in-line.
Rey
Good job...
C1:32,34 correspond to which pins on the TFP switch (N, R, P)...?
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