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Prius Two operating voltage (B+)

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by PriusGuy32, Mar 5, 2015.

  1. PriusGuy32

    PriusGuy32 Prius Driver Extraordinaire

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    I took my '12 Prius Two on a 5 hour round-trip today. I decided for fun, to drive with my laptop and TechStream running. Everything looked great, even my MG temperatures & ICE temps, in spite of having my grill blocked 100%, BUT my body voltage was always 15.0v while driving down the freeway o_O I was only running the LED DRL's, radio, and heat (auto, 69f degrees, a/c OFF). This was during the whole trip.

    Is this considered normal behavior in the Gen3?
     
    #1 PriusGuy32, Mar 5, 2015
    Last edited: Mar 5, 2015
  2. jdcollins5

    jdcollins5 Senior Member

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    I have never seen my auxiliary battery charge voltage above about 14.5V. I have seen it drift up to about 14.7V momentarily and return to 14.5V.

    I have seen it drop to 13.5V but never as high as 15V.
     
    #2 jdcollins5, Mar 5, 2015
  3. StarCaller

    StarCaller Senior Member

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    mine is pretty much for the first 90 minutes at 14.8/
    it'll go from there on quickly down to 14.7,14.6 & then a big step to 13.5, where it stays/
     
    #3 StarCaller, Mar 5, 2015
  4. mrbigh

    mrbigh Prius Absolutum Dominium

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    It must be an anomaly in your vehicle; 15 volts it is NOT normal.
     
    #4 mrbigh, Mar 6, 2015
  5. HaroldW

    HaroldW Active Member

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    Probably cooling fan working over-time in order to keep things cool? Hal
     
    #5 HaroldW, Mar 6, 2015
  6. CARspec

    CARspec Junior Member

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    Per techinfo, the normal range is 13-15 volts, so while it's at the absolute maximum, it is within normal range.

    He'd have lots of DC/DC converter codes if it was out of specification I'm thinking. They melt down before they throw high voltage though.
     
    #6 CARspec, Mar 6, 2015
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