1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Possibly inverter coolant pump?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by PriusBarber, Jan 24, 2019.

  1. PriusBarber

    PriusBarber New Member

    Joined:
    Dec 15, 2018
    16
    0
    0
    Location:
    North Carolina
    Vehicle:
    2007 Prius
    Model:
    N/A
    I was driving and my 07 Prius died and wouldn’t start back up. After searching the forums it appears that it is the coolant inverter pump. There was a weird smell coming from that area and the 15 A am2 fuse was blown. I put the spare fuse in and it would let me start it but as soon as I hit the button and put in neutral to move it off the side of the road I noticed smoke coming from under hood so immediately shut it off. I’m guessing that fuse burnt up again. Any ideas on if it’s the coolant inverter pump or something else. I have to take an Uber to get to it in the morning and try to repair it myself. Any help is appreciated. I can also be reached by text at 808-8550170.
     
    #1 PriusBarber, Jan 24, 2019
  2. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    5,302
    4,241
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    Do you have a hybrid compatible OBD2 code reader, if not now might be the time to research and purchase/borrow one.

    Yes, it would be the pump. Easy to replace, generally speaking.

    After disconnecting (electrically) the failed pump, you can replaceme the AM2 fuse again without it blowing. This will allow you to start and move the vehicle around over short distances. But I wouldn't drive it far or fast without a working inverter pump.
     
    #2 SFO, Jan 24, 2019
    Raytheeagle likes this.
  3. PriusBarber

    PriusBarber New Member

    Joined:
    Dec 15, 2018
    16
    0
    0
    Location:
    North Carolina
    Vehicle:
    2007 Prius
    Model:
    N/A
    I tried replacing the fuse last night and it blew and smoke was coming from area near fuse box or water pump
     
    #3 PriusBarber, Jan 25, 2019
  4. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    5,302
    4,241
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    Sorry to hear the vehicle is still being a bear :(

    Sounds like you may need an OBD2 code scanner for this application (y)

    You might try a blue tooth adapter for $2 which connects to your phone/droid, or a mini-vci cable w/ techstream for about $20.

    There are other options, depending on your fiscal situation or technical skill set.

    If no monies, visit a auto parts chain and borrow or ask for a free OBD2 scan, not all scanners are hybrid compatible - go try another.

    Having trouble setting up a laptop with a mini-vci cable and techstream, go with a 'Vxdiag Vcx Nano' for Toyota cable setup instead.
     
    #4 SFO, Jan 25, 2019
    Raytheeagle likes this.
  5. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    16,527
    8,429
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    This is where you bypass the pump and replace the fuse. It'll let you start the car and move it for 10 to 15 minutes.....without fear of damaging anything.

    Screenshot_2018-06-16-13-14-02.jpeg
     
    #5 JC91006, Jan 25, 2019
    Raytheeagle and SFO like this.
  6. PriusBarber

    PriusBarber New Member

    Joined:
    Dec 15, 2018
    16
    0
    0
    Location:
    North Carolina
    Vehicle:
    2007 Prius
    Model:
    N/A
    So I got my pump changed and I think I got the air out of the system as well. I drove it 30 minutes home last night. My dash lights only work half the time and it won’t let me turn car off unless I hold button for 3 seconds. That module seems to be going bad. My display screen worked even though dash lights weren’t working. It wasn’t tracking mpg on the display though. I unplugged all 3 plugs to 12v battery area for 5 mins to reset that red triangle and have had dash lights go out two of the 4 times I started it. Any suggestions?
     
    #6 PriusBarber, Jan 26, 2019
  7. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    16,527
    8,429
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    Change the combination meter and the dash lights will return
     
    #7 JC91006, Jan 26, 2019
    SFO and Raytheeagle like this.
(You must log in or sign up to post here.)