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P3004-131 Need Help " 2009 "

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by MackD, Oct 19, 2019.

  1. MackD

    MackD New Member

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    Help im getting P3004-131.
    No other codes stored in the hybrid system or the hybrid battery system.
    I checked all the easy stuff.
    I checked every fuse in the car front to back including the safety plug "nothing is blown".
    I checked all the connections in the battery and cables connected to the battery "nothing was loose".
    I checked the the system main resistor.
    What should i check next?
    Im pretty sure i have to remove the relay #1 #2 and #3 to check them but im not sure.



    P3004 Power Cable Malfunction 131 "Impossible to drive"

    P3004-131 Power Cable Malfunction High voltage fuse has blown out, service plug grip is disconnected or limiter resistance is cut off

    - HV battery system - System main resistor - No. 1 system main relay - No. 3 system main relay - Main battery cable - No. 2 main battery cable - Frame wire - Inverter with converter assembly - HV control ECU
     
    #1 MackD, Oct 19, 2019
  2. SFO

    SFO Senior Member

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    #2 SFO, Oct 19, 2019
    maleko and Raytheeagle like this.
  3. vvillovv

    vvillovv Senior Member

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    Here's the link I picked for the code.
    https://www.dtcdecode.com/Toyota/P3004-131

    looks like it's time to dig (grammar check)? into the high voltage documentation

    attention to the warnings - shorts around that stuff can be serious
     
    #3 vvillovv, Oct 29, 2020
    Last edited: Oct 30, 2020
  4. mr_guy_mann

    mr_guy_mann Senior Member

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    Ummmm, this thread is just over a year old?
     
    #4 mr_guy_mann, Oct 30, 2020
    vvillovv and SFO like this.
  5. Scott Caputo

    Scott Caputo Junior Member

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    I got this code and was wondering where the junction fuse block is located. I haven’t made any attempt to diagnose the sour yet, but I have a parts car that is going to be leaving soon and I thought I could at least grab this part first.
     
    #5 Scott Caputo, Jul 28, 2022
  6. SFO

    SFO Senior Member

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    Should be right above the driver side front wheel.
     
    #6 SFO, Aug 8, 2022
  7. Scott Caputo

    Scott Caputo Junior Member

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    I did some trouble shooting with the manual and figured out the the Hybrid drive ECU was bad. Is there any reprogramming that needs to be done to the one I’m replacing it with?
     
    #7 Scott Caputo, Aug 18, 2022
  8. mr_guy_mann

    mr_guy_mann Senior Member

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    You need Techstream (or equivalent) in order to initialize the HC ecu (gotta do a "handshake" between the HC ecu and the certification ecu).

    Posted via the PriusChat mobile app.
     
    #8 mr_guy_mann, Aug 19, 2022
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