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

Prolong charger voltage between modules

Discussion in 'Gen 2 Prius Main Forum' started by supertrooper808, Jul 5, 2022.

  1. supertrooper808

    supertrooper808 Junior Member

    Joined:
    Sep 20, 2018
    20
    1
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    N/A
    I have a prolong charger/discharger. I had block 1 moving from .7-2.00v of difference after a few cycles. The rest of the pack is good. I swapped the two first modules and did another charge cycle and I’m still getting weird peaks in block 1 and just threw codes. Is there something else causing this such as the pack wiring harness?
    9351625A-41B6-499B-BCB3-69C8D4C41C6A.png
     
    #1 supertrooper808, Jul 5, 2022
  2. TMR-JWAP

    TMR-JWAP Senior Member

    Joined:
    Aug 12, 2016
    6,194
    5,891
    0
    Location:
    Columbia, SC
    Vehicle:
    2007 Prius
    Model:
    Touring
    Have you inspected the orange plug on the voltage sensing harness and the ecu socket where it inserts? Those are often the victims of significant corrosion.
     
    #2 TMR-JWAP, Jul 5, 2022
  3. PriusCamper

    PriusCamper Senior Member

    Joined:
    Mar 3, 2012
    11,065
    4,504
    0
    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    Part of the problem is you're doubling down on how well you're matching your replacement modules to your original modules. This means if your replacement modules are significantly stronger or significantly weaker you're doubling that problem up in the same block.

    You know you have a problem with Block 1, but there's 2 modules in a block! Yet you didn't diagnose which of the two modules is bad and which is good? Put the still good module back in block 1 and try again.
     
    #3 PriusCamper, Jul 5, 2022
  4. supertrooper808

    supertrooper808 Junior Member

    Joined:
    Sep 20, 2018
    20
    1
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    N/A
    Here are the codes i'm getting from it. I think it really could be the HV ECU as the plug had a little corrosion so and when i disconnected it from the original HV ECU the pins snapped off prompting me to purchase a used one on eBay. Hoping the harness at least fixes one of the issues. Images blow are from techstream. let me know if anything speaks to you hahaha.

    Screen Shot 2022-07-05 at 9.20.28 PM.png

    Screen Shot 2022-07-05 at 9.24.16 PM.png
     
    #4 supertrooper808, Jul 6, 2022
(You must log in or sign up to post here.)