I have a older 2006 Toyota Sienna van with close to 150K that had it's trans rebuilt 11k ago that has a 2-3 flare or slide bump but no transmission codes. I replaced fluid and filter and SL1 and SL2 solenoids and installed a zip kit in the existing valve body, that did not resolve the issue. I went and obtained a used valve body and transfered the 2 new solenoids to the used valve body and that did not correct the issue. I then scoped out the transmission NC and NT speed sensors with my Maxi scope incorrectly and thought the NC sensor wasn't putting out the same amplitude I was seeing from the other, and got 2 good Transmission speed sensors from the same Donor transmission the valve body came from and got the same results from my scope until I scoped both the AC wave generating sensors from both sides of the speed sensors .
The transmission guy said the ECM could be the cause of the shifting issues and I bought a 2 day TIS sub to reflash the ECM but found out The present ECM calibration didn't show any newer level that I could reflash it to, and there was no option to Reflash the ECM over again to the same calibration level , so I wasted close to $50 just to find that it had no later level to reflash it.
I have couple customer's with 2006 Sienna's that do not have a transmission shift issue mine has , but figured if I could plug my ECM into other car to try without having to reprogram all the immobilizer keys over even if a VIN mismatch code or ABS VSC lamp might come on , it would save me unnesssarily removing and going through the trans if I can Eliminate the ECM as the cause of the shifting issue.
Has anyone swapped used 2006 Toyota ECM and was able to start and drive temporarily for testing purposes with a VIN mismatch and not have to reprogram an immobilizer key in order to do so?