ECT Analyzer/manual TC lockup
 

I found this reference to an ECT Analyzer in some Toyota service literature...it looks like it'd be perfect for manually locking up the TC on my `99 Prizm (Corolla clone) rather than having to play games with the accelerator at moderate speeds:

https://www.autoshop101.com/forms/h17.pdf

Anybody know where to get one? Better yet, is there a way to hack what it does, ie. put the TC lockup on a switch?

- Bruce

This is the sort of thought that could benefit many with auto transmissions. Heaven knows they need it. Kudos for bringing attention to the possibilities.

ECT Analyzer referred to is probably only supplied to Toyota. Toyota parts and service may be able to provide a contact.

I do know there are lockup switches available for some transmissions. May turn out to be as simple as splicing a switch into the lockup solenoid wiring. Found this site when looking around. May be of some help or ideas.
https://www.eng-tips.com/viewthread.cfm?qid=59308&page=7

Dig into this well before giving up. You could render a much needed service to others. Let us know what you come up with.

More like:

https://www.eng-tips.com/viewthread.cfm?qid=59308&page=7 , I guess.

But the result is the same...I'll need a wiring diagram. I can get my hands on a shop manual for free, but I'll need to wait a few months for it.

Click on Drawing 1 in this LINK. It shows the TCC ctrl running to pin 21 of the transmission control module as a blu/yel wire. It looks like the module supplies with with a 12V signal since the other side of the solenoid is grounded. Just let me know if the link doesn't work for you and I'll fix it.

I used to control the TCC in my 90 Turbo Grand Prix VIA a switch on the TCC circuit to lock it up sooner. But that was back when I was doing it for acceleration reasons and not FE.

TomO, when I click on LINK takes me to login and password site. Sounds like you are on the right track.

Yeah, same for me...for subscribers only.

Any indication of a service plug that can be used, like the pictures in the original link for the ECT? I'd rather clip onto a plug than munch up the OEM wiring. Thanks --

Click HERE Then enter pl249412345678 in the space where it asks for the barcode number. Click Submit. Then click on Auto Repair Reference Center (near the upper middle of the screen under Auto Repair). Then click on the Auto Repair Center Link that shows up in the next screen. Select you year, make and model, then select the topic you want to cover. In Bruce's case, I chose 1999>Chevrolet>Prism>1.8L>Wiring Diagrams>Engine controls>diagram 1

It's a little work to get through but well worth it.

Thanks!

Interesting idea. Watching with interest...

It wouldn't let me in. I got the following message.