HOW TO FIX RAV4 ECM ECU TRANSMISSION PROBLEM. **READ DESCRIPTION!**




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Tobiascookify: Jake - thanks for the post.

In the beginning I struggled to find the fault on the RAV4 Auto Transmission - Jerking / jumping gears / down shifting erratically / starting off in a hit gear / basically the gearbox was being mashed.... after having the gearbox repaired by an autobox specialist TWICE, realised it wasn't a mechanical problem.... did the research and found there was a problem with the PCB on my model RAV4... nearly sent it off... but then happened upon this video... thought; how hard could it be to solder a few resistors? I very carefully followed the video and stills - and re-soldered the resistors as described and made sure the earth connections on the corners had good contacts (double soldered these and filed them down)....

Well what do you know - Hey Presto - put the PCB back into the car (there is a video for this on You Tube to show you how to take the PCB out and put it back in...) And it only went and worked???

I've been suffering with erratic and incomprehensible Gear shifting problems for nearly 2 years!! Sometimes went away and sometimes worse... I started to think I was going mad... but it seemed to be after the car had been on bumpy roads that it played up more - which if it was a crack in a solder on a resistor that was making contact sometimes and not others... this would go a long way to explaining why the problem came and went.

Anyway thanks Jake problem is solved! CAR DRIVES BETTER THAN WHEN I BOUGHT IT!!

Павел Яковлев: Ремонт ЭБУ 89602171050

Ronaldo Panaligan: The bottom line is a lot of the pcm rebuilding video here is purposely misleading. I commented on one of the video here( ford escape pcm repair). There is an advertisement at the bottom that says "we will fix your ford escape pcm for 165" or something like that. i commented on how to fix it properly, they dissabled the comment after that. They dont want people to know how to fix them right otherwise they would loose business. Dont believe everything you watch here specially repairing car ECU because it is a closely guarded secret and not shared by refutable sources.

Gustavo Effio: Thank you very much I did it myself and my Toyota runs as good as before

broderp: The posts here in this are so full of obviously non-electrically inclined people who should NOT be attempting this at all!!!

To Jake Moon, You will be hard pressed to tell what all was replaced on that PCB besides the resistors. If done properly, any (ANY) of the chips on there could have been replaced. The real issue is to determine WHAT had failed, and I doubt any one in the business is going to readily divulge what they do. They may simply have a routine refurb program where any ECU that comes in gets a certain number of parts replace, and the ECU reflashed before a test and shipping back to the owner.

Nice video, but you fail to mention WHAT this transmission problem is or what some one with this issue will see or experience. Transmission shifting...stuck in a specific speed? Randomly shifting? locking up? jerky shifting? what speeds does sit occur? what gear? I can upon the video looking for transmission issues (mechanical) but this was very interesting. Thanks.

Mikehardcore Medina: great video!,,i resold n it work,,,, thanks for this info!

Edwing Razo Ordóñez: P0606 pliss audi a3

Michael Eves: Also solder the 2 large white 12 ohm resistors beside the input/output connector. They are large can vibrate and I could see cracking around the solder on my ECU.

Hung Tran: I try links to still pics, but links are no good can you send me new links please

Paul Dilks: fixed mine. works good.

rsmc55: Is this a normal problem when changing out a battery?  Happened to my 2001 Rav4 last week.  Now transmission issues.

Calee Wilson: How long has a resoldering repair lasted on your rav4? (mileage wise)

LEILA JACKSON: I JUST REPLACED THE ENGINE ON A 2008 TOYOTA CAMRY LE. NOW IM HAVING TRANSMISSION ISSUES. HOW DO I RESET TRANSMISSION

Gustavo Effio: hello I just got these symptoms on my RAV4 2003 and I'm about to take it out and re-sold the resistors I wonder if you know where can I buy the resistors? are they affordable?  I'd like to replace them might as well that I will remove the ECU, any thoughts?

Raikoh: Local toyota wants to replace my mum's car ECU for $2000+ AUD, I don't how it would cost that much.

aprill divina: The resistance is 330omh

Ronaldo Panaligan: I guarantee you if I reflowed the main IC you would not be able to tell if I even touched it.
I am an ECU repair guy. I fix these RAV4  ECU often. What I really do is reflow the Main IC that controls the transmission, which is not obvious, and there is no way to tell it has been touched. They probably reflowed the IC as well, but it is impossible to tell even by another technician.

Richard Burge: Have RAV4 with rough shifting issues etc. No codes are being produced, so I'm not sure it is the ECU. Mechanic drove car for two weeks and experienced some of the shifting issues, but no codes. Similar experiences?  How to resolve? 
Anybody out there have solution?

Randy Jarmon: Hi,
RAV 4 ( 2001 ) Hard shifting / slipping between gears. Trans shop   - changed transmission.... ( my bad , should have checked out this information ! ) 
Then..... hard shifting again.... shop replaced valve cover with electronics...
Shift problems again... now- took it to Toyota dealer, told them to Re Flash ECU, which they did, for free. Shifts with just slight hesitations, only 50 miles since re flash. Will wait until 100 miles. 
To be continued...
James Jarmon

edpall: Thanks for the VIDEO  Jake Moon, I did it yesterday to a friend's RAV4 2003.
The transmission was doing extreme clunks, and violent accelerations, and no shift from 3rd and up. like a disaster.

First he went to Toyota dealer, diagnostics: 1200 to change the ECM, or 3000 ECM + Tranny.
Then he went to Autozone, the part was not in stock, they need to ask for it, 1 week, and $700 for a NON TOYOTA ECM.
Then we decided to do the job at home, 1Hr labor, I resold the 6 resistors only and cleaned the board corners with steel brush gantly.
Back the ECU in place and NO FAILS ANYMORE!!   Awesome., we erase the codes from the ODBII, and the chack engine light didn´t appear again.
BIG HELP!!
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HOW TO FIX RAV4 ECM ECU TRANSMISSION PROBLEM. **READ DESCRIPTION!**