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grandson jumped 05 prius, no start, main fuse blown

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by jtuchol, Mar 9, 2017.

  1. jtuchol

    jtuchol Member

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    yea, I forgot about the wireless hookup that's probably the issue with it , my bother is a computer engineer & does not have the patience for people like me that don't understand computers like him. ( he is the one that installed this on my lap top) I am trying to help out 1 more thing I am going to try is I am going to try & swap out the power souce ecu up behind the steering wheel , I have explained this in other post on of how I planed on doing this, but will work on the mini vci too just to learn how to. I will not use the grid charger until I talk to person out in calif. that I bought it from to make sure, thanks for your help on this it does help.
     
  2. trentofdestiny

    trentofdestiny Master Finagler

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    I would say, before you rip the dash apart too much, maybe you can get the new ECU plugged in without removing the old one. Hard to say but it might save some trouble if it doesn't fix it


    iPhone ?
     
  3. jtuchol

    jtuchol Member

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    I looked at this yesterday it is buried up in there like u would not believe! can't even get my hand up in there, I have read other threads about this ecu & they all said the same thing. car is parked in a barn not needed now so no rush. going to work on mini vci to get to work.
     
  4. Patrick Wong

    Patrick Wong DIY Enthusiast

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    I understand you are working on a car owned by a family member and that the computer geek in your life also is a family member. Would it be too much to ask the geek to help by getting Mini VCI to run and to have him retrieve the DTC for you?

    Both he and you might learn in that process, and you would have him contributing in an area where he potentially can be more effective than you.

    I would discourage replacing ECUs without clear evidence of their failure. You might introduce more problems in that process - damage to wiring harness connections, use of the wrong revision part, etc.
     
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  5. jtuchol

    jtuchol Member

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    yes, I will ask him again but will take my car to him OR have him come over to the house try it again we swap out help on certain things that he does not do ( hvac work) & his expertise ( on computers) that I do not know. just for your info I did get car started @ parking lot aft. fuses where replaced ( main fuse was jumped with clip) ran for short time with no charge going into hybird battery according to graph for battery & then car shut of with red triangle showing.
     
  6. trentofdestiny

    trentofdestiny Master Finagler

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    Need to get that main fuse replaced with another one. Also there should have been a code you could read (i.e., in the engine computer) set when the red triangle came up.


    iPhone ?
     
  7. jtuchol

    jtuchol Member

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    fuse was done lone time ago in earlier post along with inverter & hv ecu, ( marriage is completed for hv ecu ) that's how I ended up here with no codes on hand held scanner ( patrick wong advised to hook up mini vci to get rest of codes if any)
     
  8. jtuchol

    jtuchol Member

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    question, can I use mini vci on a working 2013 prius v with out screwing up the car? ( if I ask my brother he might show me if I take my car to him) just for instruction purposes.
     
  9. trentofdestiny

    trentofdestiny Master Finagler

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    Yes, you can


    iPhone ?
     
  10. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Yes, Mini VCI is useful on all Toyota vehicles of recent vintage and it actually would be a good idea to use a known good vehicle when learning how to use the system.
     
  11. trentofdestiny

    trentofdestiny Master Finagler

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    Also, the software version that came with your cable is probably a few versions behind the newest - but don't worry, it will still be fine on your 05 and 13


    iPhone ?
     
  12. jtuchol

    jtuchol Member

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    ok, thanks
     
  13. jtuchol

    jtuchol Member

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    ok, thanks
    ok, thanks
     
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  14. edthefox5

    edthefox5 Senior Member

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    If you can't get the mini vci working you can buy a VX DIAG instead. Plug & play. $75 on Amazon.

    Stop wasting your time shot gunning ecu's. You will make the car impossible to fix at some point. Get a code reader either a VX or the VCI. harvest the codes. Go to toyotatechinfo.com and get 3 day subscription and print out pertinent info to your issues. Follow the code troubleshooting tree's. The fact that you had burnt up parts on the original Inverter is not good. The 12 volt buss took a beating so you may have devices on that B+ line that are bad possibly shorted. If the Can is operational it will throw codes. I would remove the 12 volt battery and put a battery charger in its place and see what kind of current the 12 volt buss is demanding.

    This is how a Toyota tech would repair your car. But that would be at $140 an hour. Don't get to crazy the car may be totaled.
     
  15. jtuchol

    jtuchol Member

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    ok, I will look into that scanner going to ask brother first, but my daughter & wife calling the car a p.o.s. this is his 2nd one first one he wrecked aft his dad put over a 100,000 miles on car ( 07 prius) with 0 problems, I have to bite my tongue every time this comes up my grandson gets uncomfortable when it is he knows he screwed up, I keep telling every body that these are good cars but this is a major no no with these cars or any of the newer cars, but what do I know. just for info, no more blown fuses & this is as alot farther than I have been. Car will not be needed to drive until june when granddaughter starts to drive on temps.
     
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  16. edthefox5

    edthefox5 Senior Member

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    Ok I understand getting heat from the family becasue its all blown up. But invest a a few more dollars in a proper OBD scan.
    harvest all the codes including the code's subset number. The car will tell you why its unhappy. Post all the codes correctly on this site on this thread and we will help you..Do what i said and get a techinfo subscription and print out all pertinent info on Inverter replacement and fuse box replacement.
    Address first the most fatal code reported. Look that code up on techinfo and it will show you a troubleshooting progress tree. Start there.
    Do not start throwing modules at the car becasue you have an assumption. Assumptions are great if your an expert on the car.
    Your not. Good luck.
     
  17. jtuchol

    jtuchol Member

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    ok, working on that now other members said same thing too, working on scanner now.
     
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  18. JimN

    JimN Let the games begin!

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    Stay cool. Work the problem, don't let the problem work you. Be careful as too much belief in an assumption can lead you down the wrong path. Bad vibes certainly don't help the situation.
     
  19. jtuchol

    jtuchol Member

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    ROGER!
     
  20. jtuchol

    jtuchol Member

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    ok, up date on prius I got it going no thanks to worthless mini vci or the other p.o.s. scanner that I bought no key to operate both of them! would of had to buy it from toyota, won't do. so I had a friend that runs a shop he said he does not know much about prius's so let me borrow his nice snap on scanner for the weekend, well I found a code that would not show up on my scanner but did on his it was the same code about the emoblizer again found out that car would not let me reprogram hv ecm so replaced that & the module next to it, reprogrammed it again & it worked! car started ran for a short time & red triangle came back on again & stoped charging hybrid battery. it flashed a code that I wrote down but can't find it but it was a code I seen before something about high resistance in negative contactor in the hybrid system, it was a hard code it kept coming back so I bought a couple of contactors off of e-bay swapped out neg. contactor and all is good now! car runs good no lites on or any issues. the only thing I got to say this was a lot of work the right scanner made it easier but if it was someone Else's car I would of told them to junk the car, but wanted to help out my grand kid's.