P3020 after battery work- Mod 10 service plug disconnect?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Gumbercules, Aug 3, 2019.

  1. Gumbercules

    Gumbercules New Member

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    Hi Everybody,

    Thanks for all the help I have received in previous posts and thanks in advance. I got great answers even when I posted in the wrong place!

    I recently went through my gen 2's battery with 127k on it and put it back in the car. I put on a new used wiring loom, a new computer and cleaned up bus bars.

    I know this code is most likely caused by me not tightening everything to perfect torque or having a nut loose.

    My car threw a P3020 this morning, I know that is low voltage in mod 10, but I am wondering before I rip the battery back out of the car, is this the mod that has that flimsy plastic connector that runs to the service plug? If so any recommendations on making this plastic piece less flimsy?

    I'm mainly wondering if there is something different about module 10 from the other modules that would make it more likely to throw a code. I'm leaning towards connections rather than cells being the problem.
     
  2. TMR-JWAP

    TMR-JWAP Senior Member

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    Yes, Block 10 (modules 19 and 20) is where the service plug connects into the system. I'm not sure what "flimsy plastic connector that runs to the service plug?" is referring to. The cables going from the terminals to the plug are fairly stout.
     
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  3. Gumbercules

    Gumbercules New Member

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    Thanks. Am I correct in that this block (thanks for the correction) just has the plastic with metal inlaid and no nuts for this connection? As in the plastic buss bar covers are the main thing that holds the plastic connections to the battery. I think mine is kind of loose which is the reason for this code.
     
  4. TMR-JWAP

    TMR-JWAP Senior Member

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    Am I correct in that this block (thanks for the correction) just has the plastic with metal inlaid and no nuts for this connection?

    The heavy orange cables that connect block 10 to the service plug have lugs crimped on the ends that are fastened to the module terminals. These lugs are housed in the "black plastic" safety cover, slip over the module terminals and are absolutely fastened to the module terminals with a nut.
     
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