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Isolation Resistence, why do different cars have a different value..

Discussion in 'Hyundai Kona Electric' started by FloridaSun, Jan 16, 2021.

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  1. Jan 16, 2021 #1
    FloridaSun

    FloridaSun Well-Known Member

    Lakeland, Florida
    I talked with someone I know from a Kona EV facebook group and got the question why some cars have 1000 k ohm and others 3000k ohms isolation resistance? Does anyone know?
     
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  2. Jan 16, 2021 #2
    mikeselectricstuff

    mikeselectricstuff Active Member

    As it's such a round number I'd guess it's the limit of measurement - either different hardware of firmware.
     
  3. Jan 16, 2021 #3
    KiwiME

    KiwiME Well-Known Member

    New Zealand '2019' EU, heat pump, pink coolant
    Mine reads 3000 but I see the max value in the PID is 1000. I'm not sure we have any evidence that the value is trustworthy in any case.

    000_Isolation Resistance Surge Resistor 0x220101 ((bf<8)+bg) 0 1000 kOhm 7E4

    28FB4C08-72B0-46A6-822C-9EC48A85B207_1_105_c.jpeg
     
    Last edited: Jan 16, 2021
  4. Jan 16, 2021 #4
    ttsherpa

    ttsherpa New Member

    As far as I know in my Kona 2020 the latest BMS update changed the resistance value from 1000 kOhm to 3000 kOhm
     
  5. Jan 16, 2021 #5
    CR123

    CR123 New Member

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  6. Jan 16, 2021 #6
    Wildeyed

    Wildeyed Well-Known Member

    Eastern Ontario 2019 Ultimate
    This forum has become virtually useless. A shame really.
     
  7. Jan 19, 2021 #7
    KiwiME

    KiwiME Well-Known Member

    New Zealand '2019' EU, heat pump, pink coolant
    I tried setting the parameter max limit to 10,000 and then 1,000. In both cases it always read 3,000.
     
  8. Feb 19, 2021 #8
    CR123

    CR123 New Member

    More information about this.
    1000 kOhm is an indicator that campaign 196 (01D072) didn´t update correctly.

    Now my car has 3000kOhm and passed two more campaign 00D111 and 00D118.
     
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