Thanks Jeff. I have the same luck as yours. My truck is also a 2002 FML
I don't have any clarification to offer - I find this as confusing as you guys do.... Yeah, I'm still puzzled on this as well. The OIL is the trans oil temp sensor/warning circuit, which is A/T only, but what puzzles me is the circuit that's supposed to be responsible for the CCV on the A/T -- if that pin is being used by the ECU for the OIL sensor, then which ECU pin is controlling the CCV? I don't have an answer yet. The added irony is that the analysis shows there are only a very few conflicts out of the entire multi-year span of transmissions and ECUs that share the same connectors. Just my luck one of those is my year
Thanks for your help, everyone -- v1 of the "complete" early Tacoma ECU wiring table document is ready for download:
(Right Click, "Save File As...", etc. Total size is 2.7MB)
Thanks especially to Yotaoffroad27, Johnnyboy, and EnolaGaia for your feedback and contributions -- it would not have happened without the influx of wiring diagrams Johnnyboy and Enola provided. I am also endebted to Enola for the the ECU function abbreviation definitions and wire color legends. Thanks!!
Feedback and corrections welcome.
Relax, it isn't that bad. Honestly.As you can clearly tell, my questions evolve completely around the electrical work involved. It would seem that I fall short in this area and am nervous.
Why?! Go to http://techinfo.toyota.com and buy a 2 day pass for $15. Have full access to the FSM online. Download as much of it as you want during that period, including the wiring diagrams. Get everything. Shine some light on what you're unsure of.First of all I am working without a FSM and relying soley on yours and the others information.
In my case, I did my final ECU wiring at 2:30am after wrenching on it for who knows how many hours. I just wanted to finish and completely forgot about taking pictures. :xzzz:My question is that of all of the write ups on this I have yet to see photos showing the wiring portions. (i'm sure because there hard to show clearly)
The wires he mentions are the ones in the AT wiring harness that plugs into the AT transmission under the truck. This is the thick wiring harness you'll unplug to remove the transmission. I'll come back to this in a minute.Question 1- I have an 02 DC Prerunner 2.7 and I got my clutch pedal assymbly from car-part.com but based on Tacoma4life's diagram I'm not sure that I have the correct one because all thats on it is what i would assume to be the clutch start solenoid. His diagram mentions two seperate connections listed below.
"When the clutch is pushed in, wires 6 and 9 are connected and
the computer thinks it's in neutral. Now the truck can be started.
Without the clutch depressed the truck will not start. Very factory like.
When the clutch is fully released wires 3 and 7 are connected.
Now the computer thinks it's in drive and the cruise will function
properly. However, as soon as you begin to depress the clutch,
the cruise will disengage just as it should."
Am I missing something?
If I were to make it permanent, I'd just cut the unused wires and tape each end so it couldn't short on anything. Removing the pins and taping would also work and might be easier to put back together if you needed to.Question two - You mentioned that you used a URD jumper harness but if you were to do it permanent, does that mean you'd just cut and remove the wires before they plugged into the ECU? Or remove the pins of the ECU itself? I guess Im much more a visual person when it comes to wiring.
Any and all help is definately appreciated!
Still some odds and ends I need to sort out. I haven't gotten around bending my twin stick. I did try it out the other day though I love 4wd low!Congrats!
Bummer about the stray code, but I'm going to go with the exhaust leak being responsible for the code, as we have the same year and same swap, and I don't have any codes.
Glad you got it done!
Well...yeah. It's just wiring. The goal is to get it running correctly and not trip the CEL. The trick is knowing which wires you need and which ones you don't.So you just bolted a man trans ECU in place of the A/T ECU and cut or un-pinned some (lol) wires?