1. Offline

    ozymandias Junior Member

    Member Since:
    Feb 20, 2007
    Posts:
    83
    Likes Received:
    0
    Location:
    Virginia
    Your Vehicle Year:
    2004 Prius
    Model:
    N/A
    I am going to change the water pump on my 04 tomorrow. The repair manual says to make the pump run with the diagnostic tool. I don't have this tool, but I came across this procedure. Does anyone know if this will do the same thing?

    Is there some other way to do it?

    Thanks
  2. Offline

    brick Active Member

    Member Since:
    Dec 10, 2006
    Posts:
    1,079
    Likes Received:
    61
    Location:
    Upstate NY
    Your Vehicle Year:
    Other Non-Hybrid
    Model:
    N/A
    Are you changing the engine water pump or the inverter water pump?
  3. Offline

    ozymandias Junior Member

    Member Since:
    Feb 20, 2007
    Posts:
    83
    Likes Received:
    0
    Location:
    Virginia
    Your Vehicle Year:
    2004 Prius
    Model:
    N/A
    Engine water pump. I wasn't sure if the video I posted was for the inverter or the engine.
  4. Online

    Patrick Wong DIY Enthusiast

    Member Since:
    Mar 8, 2008
    Posts:
    12,371
    Likes Received:
    2,934
    Location:
    Green Valley, AZ
    Your Vehicle Year:
    2007 Prius
    Model:
    N/A
    The concept of shorting the CHRS relay switched terminals to run the CHRS pump is valid; I believe that I was the first to post that concept on PriusChat. If you do a search you will find my detailed how-to.
  5. Offline

    ozymandias Junior Member

    Member Since:
    Feb 20, 2007
    Posts:
    83
    Likes Received:
    0
    Location:
    Virginia
    Your Vehicle Year:
    2004 Prius
    Model:
    N/A
    It worked pretty well...I had the system fully bled in about 30-45 minutes I think. After one heat cycle it took just a tiny bit more coolant and it's done.

    The repair manual says to close the bleeder valve and the radiator cap when cycling the CHRS pump, but since the engine isn't running I found that I didn't really need to do that...after the first couple of times I just left the radiator cap off when I ran the pump and nothing splashed out.

Share This Page