Gen 2 ECM replacement
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- čas přidán 28. 07. 2024
- Electrical Problems
Failure to Start
Fault/Trouble Codes
Intermittent Problems
Loss of Power
No Ignition Pulse
No Injector Pulse
Poor Fuel Economy
Shifting Problems
Purchased my replacement from flagship one
Thanks for the video. Like you said, there isn’t any other videos out there telling you how to do it. Not a lot of bs just how to do it. Greatly appreciated.
Great video! A couple tips for anyone else tackling this job:
1. Disconnecting the yellow connector to the left of the ECM (visible at 2:57) works differently to all the others. This connector is for the airbag sensors, and is secured with a spring lock. To release the lock, get a finger tip on the white piece of plastic located on the right side of the connector, and slide it towards you. The connector should then slide out very easily.
2. You need to remove the HV ECU first (6:49), and the video isn't totally clear on how to do that. There are two L brackets on the top and bottom surfaces of the ECM, fixed to it with Phillips screws. The HV ECU is bolted to these brackets. Release the bolt on the upper bracket (6:03) and the screws and/or bolts on the lower bracket (not in video).
3. You need to release the lower bracket holding the ECM to the chassis. This is pictured at 5:30 (still bolted to chassis, but rotated 90 degrees CW so it's out of the way)
Photos in this album might be helpful in understanding what's going on: priuschat.com/media/albums/gen-2-ecm-replacement.2631/
Worst case scenario you can remove the instrument panel which adds about another hour of work (see czcams.com/video/PIOrdcQvnJg/video.html)
Great Video, just showing how to get in there so we can check the connectors for corrosion is great! My kick panel (the flexible one) isn't coming off (the part by the bolt is stuck) - i wonder if i am missing something obvious?
so I am doing this job and i am at the 6:36 part taking out the bolts in the tight places.. I am curious to know if there are better wrenches in order to get back there.. I don't want to give up after taking everything out lol. By the way thank you for your video.
does the jumper between pin 4-13 work for prius c 2012? I replace an internal computer
ok so at 7:04 you are in the back bracket... I have like three 10mm bolts off, the one in the very back is all I need now.. so the final one is in the back in this time frame that we are looking at? is your prius here a 2007? what year is your prius?
Where did you get it? You didn't the link lol. I think my done
You talk about reconditioning immobilizer and using at two digit pin. What is the two digit pin or where do you find it?
That takes a computer like one a locksmith uses
Lost my fob key can I replace the eco module to get it work with the fob key that comes with it or do I have to replace something else as well if you can help I’ll be greatly appreciated
If you don't have another fob that runs the vehicle you'll have to have a locksmith go in, find the correct "key" for programming, program whole new key.
If you have a working fob the vehicle can program another fob using the "chicken dance"
What a great video. How did I stumble onto it? My Gen 2 Prius is throwing the POA80 code and says hybrid battery, but that code could mean anything and all the service people are saying to replace the hybrid battery. I noticed that the ABS light is on on the dash display. Is a bad ABS possibly causing the POA80? Tune in tomorrow to find out...
what happened?
Hello
I have 2009 prius has power source control failure.
If I replace the used one . Do I need to reprogram this control?
Thanks for comment.
Are you talking about the power relay or control module
Hello sir would you know where the computer tire monitor on a 2007 prius location?
It's part of the ECU which is what I replaced in the video. This will also include the sending units located in each tire
Can a bad ECM cause cylinder misfiring cause my Prius is throwing an ECM Processor error, cylinder 1, cylinder 2 and random cylinder misfire also oxygen sensor circuit high voltage bank 1 sensor 2 and oxygen sensor circuit high voltage bank 1 sensor 2. Can that be a bad ECM
It could I wouldn't think that that have anything to do with high voltage but it is relaying the information from the rear module.. is that the information coming from the code reader
Yes used FIXD obd2 reader and it gave me those codes I tried to unplug my 12v battery for 5 minutes, replugged it and the misfire went away apart from the oxygen sensor circuit high voltage bank 1 and 2 sensor 2 so I will try replacing my oxygen sensor 2 today and see if it puts the codes off
It could be but also would check for a loose ground in that area.
If it were me I would probably replace the oxygen sensors since that could cause the vehicle to miss in the first place
Thanks you are very helpful am definitely gona check for that in a few
@@427daison did you figured out having the same problem with the bank 1 sensor 2 high voltage let me know
My 2008 Prius is spitting out alot of codes, I replaced the ecm and reprogrammed it and still having issues here is all the codes it's giving off. Any help would be greatly appreciated. It is running up to about 45 mph then it starts to misfire and cut off on me with the red triangle of death. I let it cool down and go out to start it again and the triangle of death is gone. Idk what to do
P1116
P3190
U0293
U0100
U0111
Was all this sudden? Is it possible that a mouse has chewed some wires? Is it garage kept? They can leak water into the trunk via the old seal near the trunk shocks.
One of those codes would be bad enough but all of them together seems unlikely. Did the problem occur during a rainy time period.
Yes unfortunately it was all sudden.
Check air filter squirrels fill mine up with acorns and set off my triangle of death and shut off
Update: I got rid of the Prius it became to much of a headache, I now have a suv and motorcycle. Thanks for trying to assist me.
Is the removal and replacement same with pruius 2005?
This vehicle is a 2005
Hi, our prius wont recognise keyless entry but will start if i use the fob in the slot. So to pair the fob with the ecu, just turn on power but not running for 30mins, right?
If you changed your battery already I'd probably get a new fob and do the "chicken dance". You can CZcams that one. But, but buttttt if you have a flee market around you might find a person selling fobs and will do the whole pairing thing for around 75.00 give or take. Plus be careful of fobs online. Some are trash. Maybe something with good reviews if you plan on doing it yourself
@@eby6114 well the toyota shop says they cant get the keyless entry to work with new battery! Is their a propper workshop manual from toyota, you know of?
@@findvoltage I'm not aware of anything but a locksmith is more knowledgeable that most mechanics since that's all they do. Mechanics even ones from Toyota do many different things.
@@findvoltage most of those functions are on a laptop.
@@eby6114 thanks for the info, it is what i needed.
Did you lose your cars mileage reading after ecm replacement?
No everything was the same. Odometer etc
how about a list of tools and power tools..maybe a visual picture. I want to see if you have a special tool for the hard to reach area. thank you..I'm half way thanks to your video. cheers
It's been a while but I think just regular tools. Not much cussing. It gets tight back there though.
I have a lost communication with ecm and pcm and lost communication with battery energy control module A I don't know if I go in to my car and check the wires right there if this would help me find the problem
Are you referring to the hybrid ECM because there's another ECM in the back that controls the battery management system. You also might start hunting a grounding issue to make sure there's nothing wrong with that
Well I have a toyota prius 2005 I already replaced the 12v battery and fixed the hybrid battery pack as well and my code reader still gives me these 2 codes "u0100 and u0111' and I have been testing all the fuses and I have been looking everywhere to too see someone with a similar problem but I can't find nothing so I really don't know how to find this problem and fix it
@@toptipsforahealthylifestyl2133 hopefully it's not a wiring issue that could be something as simple as a rat chewing on some wires or some wires got shorted out but either ways it's a communication issue probably in the wiring harness but it could just be a bad module
Thank you for you help man I appreciate it I'm going to get a new ecm module on Wednesday and I'm going to check the all the cables as well I hope this will solve my problem
@@toptipsforahealthylifestyl2133 did replacing the ECM for the hybrid (electric) portion fix that issue? I’ve had the U0100 and U0111 both come up after replacing the ABS module
Left windows in prius rolled down during rain. Now the car has bunch of lights lit up on dash board and spits out the code U029A (lost communication with hybrid battery pack sensor module)
I'd get some fans in there. Wipe up all the water you can. I've cleared mine doing that. It might be able a day.
Your other option is to watch a hybrid battery video. Get to the wires if you can do so SAFELY and inspect, dry, add dielectric to any plugs.
@@eby6114 alright I'll try that. The carpet and seats have dried but guessing there still water deeper in the car. I can get it to turn on after multiple restarts but it only runs on gas:/
@@Snake73259 Actually it won't run on gas without the hybrid battery starting/turning the motor. They have no starters.
@@eby6114 so is it safe to use rn? Noticed it's getting horrible gas mileage but would it put too much strain on the engine or no?
@@Snake73259 I've done it. Probably 20 miles from home. You also might try disconnecting the hybrid battery fuse and the 12 volt battery and see if the computer will reset after reconnecting.
Do you need to program the computer after installing ? If so , can you make a video on that .
I didn't need to for mine. However my battery went dead the hybrid one. So I had to build a charger power back up so that it could be started
Do you have to do the 4 and 13 pin trick when replacing the hybrid control ecu...cant find anything on the hybrid control
@@davidbauer7301 no it was plug and play
Mine went to the imoblissor code
@@davidbauer7301 if that's the case you can try to clear all codes and if that doesn't work I'd give a locksmith a call. Tell them your situation. Otherwise Toyota. Most qualified locksmith can "rekey" it to your keys
What was the symptoms. Thanks.
Mine started running tough and the keys stopped working
@@eby6114 Thanks. Mine is check engine light is on only. Will not power up .the only lights on the dash is the check engine light. But open door light will come on . No fuses blown.
hello, I want to know how I can diagnost my ECM
A bad ECM will often throw a lot of trouble codes, give poor fuel economy, "forget" your key setup, engine light on various things. Usually multiple problems at the same time. Of course it could be the wiring harness as the ECM doesn't often go bad, but the call personnel wasn't surprised that I had a bad ECM but that's all they sell so there's that. A good scan tool will be helpful
Sounds familiar.
A Toyota mechanic guessed I had this problem. Over the phone.
Any advice on scan tools.
My standard orange obd2
Didnt read a thing.
What was it not doing?
Who scanned it.
I've ordered a cheap obd/?where u
Install an app? Maybe I'll figure it all out/maybe not.
And tow it to Toyota .
Mine stopped running. I thought it was running but it was just the electric portion trying to start the vehicle. Discharged the hybrid battery then had to make a charger for it
What cause the fan to come on an the back seat.
I replaced the body and the power management of a 2013 prius c, this will help me match the rest of the components?
Not sure of the question. A new ECM is usually setup by a locksmith for the keys setup
the clip un pin 4-13 works in toyota prius c, it does not start but it reaches accessories