Up late. Need help ASAP. Battery cell closest toECU. Neg or POS?

Discussion in 'Gen 2 Prius Technical Discussion' started by ColoradoCrow, Jan 29, 2025.

  1. ColoradoCrow

    ColoradoCrow Senior Member

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    Is this first module closest to the ECU Drivers side in a North American Car. Over the left rear tire. Where the High Boltage battery connect to the pack. Is the first one Negative or Positive. I have a 50/50 change and I m stuck. Please help. I’m up online right now
     

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    #1 ColoradoCrow, Jan 29, 2025
  2. Hayslayer

    Hayslayer Member

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    2009 Prius
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    The short orange cable should connect to the (+) on the module closest to the ecu. The long orange cable connects to the (-) on the module furthest from the ecu.
     
    #2 Hayslayer, Jan 30, 2025
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