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P3004 after replacing hybrid battery modules

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by mjoo, Jul 7, 2024 at 9:11 PM.

  1. mjoo

    mjoo Senior Member

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    2010 Prius
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    III
    Hello, priuschat. The battery modules in my HV battery were getting weak. As a precaution I drained my HV battery. My discharger was damaged so I did this by putting it in neutral. I then pulled the HV battery pack out and replaced all modules with 2017 prius modules. I also used brand new bus bars. According to what I see in doctor prius app (attached), I think the install went well except for the p3004. It's looking like an inverter issue since the 12V battery isn't charging now. I checked all the fuses and they were Ok. Is there anything else I should look for? Thanks! Screenshot_20240707_203859_Dr%20Prius.jpg Screenshot_20240707_193111.jpg

    SM-A536V ?
     
    #1 mjoo, Jul 7, 2024 at 9:11 PM
  2. mjoo

    mjoo Senior Member

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    Almost forgot to mention that it won't go into reverse or drive. And the engine won't start in maintenance mode...



    SM-A536V ?
     
    #2 mjoo, Jul 7, 2024 at 11:02 PM
  3. mjoo

    mjoo Senior Member

    Joined:
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    2010 Prius
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    III
    I followed ChrisFix's instructions from this video:

    All harnesses were reconnected. I can hear the relays click when I try to start the vehicle.

    I don't have Techstream working at the moment.

    SM-A536V ?
     
    #3 mjoo, Jul 8, 2024 at 7:25 AM
  4. ASRDogman

    ASRDogman Senior Member

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    You know the basics..... Go over EVERY connection. Double and triple check them and
    make sure no pin got bent, and that all the connections are fully connected....
    Make sure the the orange lock is fully and correctly seated.
     
    #4 ASRDogman, Jul 8, 2024 at 10:23 AM
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