NEED AN ECM!?

I all, this isn't an official wanted ad , at least not yet. Through testing and history this is what I found and was wanting advice on what to ask for in a used ECM before I post my wanted/buy post.
Bought the 2003, 5VZE,non 4WD in 2009 w/ 103,000 miles. took it to the dealership and had them check on maintenance history...recommendation to previous owner was to change out ECM for I think a ABS light malfunction? but never had any problems until a few years with the airbag light, it came on but all sensors are good.

About a 1 1/2 yrs ago noticed the transmission being hesitant but went away and at times it came back. POST: Transmission-Hesitant/sluggish operation
Last month from throwing a P0976 (w/o the check engine light on but since I replaced the solenoids it is on) OBDII code I replaced the shift solenoids 2 weeks ago. come to find out it still throws the codes and shifting is getting worse. According to the FSM troubleshooting found that the old solenoids OHMs need to be between 11-15... they were!. Testing says start with ECM, then to connector plug on tranny, then to solenoids. I'm at the point of I guess i'm in need of the ECM. New ECMs seem to go for $750-1200 ($1200 from dealer). Used are from $40-$80. When I ask for a used one what do I need to be aware of? get one were the truck hasn't been in a front collision because it would show the airbags deployed, etc.? BTW here is the info on mine:
ENGINE CONTROL
TOYOTA
89661-0Y030
TN275000-3981
DENSO

A/T, 2 X 4, 5VZ, 2-04070

Thanks for all the help.

 

There is a few on ebay

 

I saw 3 of those on ebay, between $154-180, didn't know those were still that expensive being around the truck is 15 yrs old. one says it needs programmed(not sure on what that meant) and another said if you have some security entry key it needs programmed to that. I know my key has a chip and I do have a remote, is that what their taking about or a more advanced security system? My local craigslist has one for a '98 @ $65 but not my type and the local boneyards are iffy. can this ECM be "reset" or once they start to go out , they're done? Any recommended Popular Tacoma boneyards or leads anyone can give is appreciated. Found out I need 50 post to buy/sell or trade, didn't see that coming. Thanks

 

Dang I have one from a 2004 auto 4wd

 

thanks Anthony, i got a feeling that a tacoholic on here is scratchin his/her head and saying..i know i got one layin around somewhere. i gotta get one qwik cause the shifting sequence is getting worse by the day.

 

thanks Anthony, i got a feeling that a tacoholic on here is scratchin his/her head and saying..i know i got one layin around somewhere . i gotta get one qwik cause the shifting sequence is getting worse by the day.

 

thanks Anthony, i got a feeling that a tacoholic on here is scratchin his/her head and saying..i know i got one layin around somewhere . i gotta get one qwik cause the shifting sequence is getting worse by the day.

 

what ECM do you need to replace??
ABS have its own ECM, is that what you are trying to replace?? what error code was it?
Then your SRS ECM has gone bonkers too?? again, what code did it give you?

I ask because it's very rare to see ECMs failing

Actually, crash data gets stored on the SRS ECM, not the engine or abs ECM. After a crash, SRS ECMs are reusable, but they need to be reset to clear the crash data

 

Oh!!!! i see.... i didn't know that.. OBDII code : P0976 ( shift solenoid B low circuit). Yea, that's also what I've read was its very rare that the ECM fails. FSM says it and on rockauto at the tacomas ECM parts section A1CARDONE gives a troubleshooting sequence to follow and they also say its very rare that one fails. Seems like the shifting got worse after i changed the solenoids out and then the eng.check light came on. Whats strange is and i gotta double check the PN's again with Transtar1 was when i got the solenoids (ROSTRA). Before, when i spoke to the guy he relayed to me the PN set (advised that changing both shift solenoids where better to change out rather than just the one). When i got the solenoid set there was a different PN on the box but then the application on the box said for A340E and a couple other applications and they did fit perfect. i also got the tranny filter and pan gasket, these where correct and i put them on, but as i was continuing to read up on the trouble shooting procedure i ran across the tranny filter application for the A340E and A340F. he sent me a filter for the F...(long rectangle style) and it fit!(same as my old one). but the FSM call out a more shorter square version for the E...strange!!! Tonight after i get home i can get those ROSTRA PN's and post them.

 

One thing I didn't see was if you are 5-lug (2wd) or 6-lug(PreRunner).

Also to note, since you have an '03 5VZE you may have the ECTS which could use different ECMs

 

I'M A 6 LUG PRE-RUNNER, ECTS???.....I WANNA SAY YES , I CLICKED ON YOUR LINK AND I DID WHAT YOU DID A COUPLE TIMES AND ALL YOUR PICS LOOK LIKE MINE AND YES I ALSO GOT THE $1200 PRICE TAG BECAUSE THE TB AND PLENIUM ARE 1 UNIT...THANKS FRIZZMAN

 

Alrighty then...I called Jim (very knowledgeable, very helpful..aka most bestous guy to talk to about when ordering tranny parts)@ Transtar1, he sold me the solenoids. he confirmed that the Rostra PN 52-0230 cross-references to Transtar1 PN 67420CK. he helped confirm that a very good possible problem could lye in the wiring. he gave me the website, troublecodes.net to go too.I didn't note this before but while I was troubleshooting the solenoids and wiring, the FSM says the connector plug@ the tranny, when you pull off to check the S1 and S2 pins the ohms should be between 11-15. 1 pin I checked read 11.67/14.67 ohms and the other pin read 6.69 k ohms. NOW!, at first I thought it may have been me cause I had a hard time getting a good ground(atleast that's what I thought), I kept getting erratic readings especially on that pin but not so much on the other,the other seemed to stabilize and that's when I finally got a reading of 11.67/14.67. Narrowing it down between the troubleshooting procedures i followed in the FSM, Jim, the troublecodes website and you guys, It may just very well be the wiring and I may have been reading that erratic number right. Not to savvy on interpreting the reading, but what does the "k" stand for in 6.69 k ohms?. the troublecodes website tells of a procedure that involves checking for burnt, pinched, misrouted, chaffed wiring. etc. to follow. So hopefully I am narrowing it down. with this said and assuming it could be the wiring. did anybody have the problem that i'm having? if so, was the problem indeed a wire problem?, where in the wiring harness was your "bad" wire located? was it chaffed, pinched etc?... Ok, thanks all!!

 

yesterday I double checked the S1 and S2 contact point on the connecter plug @ the tranny, got a 7.63 ohms this time on both which according to the FSM it should be be @ 11-15 ohms. Started checking the wiring and related sensors, ATF temp sensor, coolant temp sensor, brake switch, TPS, speed sensor and didn't find anything abnormal. my very first thought when all this started was the speed sensor but IDK now, since getting the P0976 code and trouble shooting that, its been a trip. Last night I got a call from my craigslist ad wanting the ECM, guy was parting the truck out and wanted $250, talked him down to $150. IDK but guess i'll try that. Anybody else's guess here?

 

k = kilo = 1000

6.69 kOhms = 6690 Ohms

 

Thanks Dr Z, so what ur sayin is its a tad bit out of specification...11-15ohms vs 6690ohms.... Wow! what would cause this?? a grounding issue?? I'm brain dead cause I've looked through everything above again and cant find anything in the wiring harness that might cause an issue unless its too obvious and i'm not seeing it. what would there be on the leads on the ECM to check? anything? the C.L. guy looks like its not working out..haven't got a response from him in 2 days

 

Are you getting 6.69 Ohms or 6.69 kOhms? What brand were the new solenoids? And is the ATF level correct?

Sometimes a misfire will cause a hesitation and feel like it's a transmission problem, so you want to rule out ignition and fuel problems too. Ignition problems sometimes only happen at certain rpm and engine load like when you press the gas to accelerate. Example, my Corolla had a bad spark plug wire but it only caused a misfire when accelerating around 40mph when the transmission shifted to a higher gear.

 

Rostra PN 52-0230 cross-references to Transtar1 PN67420CK.
Actually its 7.63 K ohms ( yes has the K)
Fluid level is between the 2 hot notches
As far as i know the 3 igniter assys. Plugs and wires are good... changed the plugs and wires out about 3-4 yrs ago and jus double checked their condition.
I see your point of checking other poss. problems and being that the OBD code was P0976 and i changed out the solenoids and still throwing the code IDK..what a headache! Off today and taking advantage of this Hurricane that is jus south of us..getting a kittle wind and rain though. contacted 1 local boneyard and they have 3 ECMs but not the same numbers.Guy says to try carparts.com. My nephew (tranny mech in arkansas) says might be 2nd gear going out but would have to look at it. He also said maybe give NPC automotive computers.com a try.I jus got done disconnecting all the connecter plugs(5 of them) from the ECM and then checked the resistance on the tranny plug where i got the 7.63 k ohms at and got no reading. I take it if the ECM is unpluged i would get nothing but checked anyway to see if the wires were grounding out.