Electrical issues rear doors

Discussion in 'Gen 4 Prius Audio and Electronics' started by GAman, May 17, 2026 at 6:15 PM.

  1. GAman

    GAman New Member

    Joined:
    Yesterday
    3
    0
    0
    Location:
    Georgia
    Vehicle:
    2017 Prius
    Model:
    II
    I bought my first Prius this month, 2017, i really like it.
    I spent the day installing some audio upgrades. After i went after the dash rattle.
    I did not remove nor touch nor replace the head unit.
    I started on the B pillar on the R side, i'm using a LOC to feed an amp to feed a mono sub. I spliced into the speaker wires. I then went to the L side and did same thing.
    The Issue:
    On the R side i cut the black Power wire and white speaker - by mistake.
    Now the L side works, speaker BLK +, YLW - , window, door at this point...

    I went back to R side and i corrected my issue, i spliced back together the BLK power wire
    I check both speaker wires + and - with a meter i get 12v on them, 0v on the black, still no door, cannot open, window is down and in operable. Back to the L side, i decided to put the meter on there to see if black had power, well i slipped and touched more than one pin in the connector and i heard a faint something up front and now the L window does not work, although speaker does, door does. I am truly at a loss, i was in the garage, in the car a full 8 hours today, i'm exhausted and desperate for a fix, if any one can shed light on this i really would appreciate it.

    RECAP:
    RR door nothing works, new wire tap removed, BLK pwr wire connected.
    LR door and speaker work, no window op.
    I have tried the recalab window procedure on both.
    I have check all fuses under the hood, none blown.
    I have examined all pins on both wire connectors, all are good, none bent or anything.
     
  2. GAman

    GAman New Member

    Joined:
    Yesterday
    3
    0
    0
    Location:
    Georgia
    Vehicle:
    2017 Prius
    Model:
    II
    I also disconnected the 12v battery to try a reset. Thank you.
     
  3. GAman

    GAman New Member

    Joined:
    Yesterday
    3
    0
    0
    Location:
    Georgia
    Vehicle:
    2017 Prius
    Model:
    II
    I'm an idiot, the door lock was the physical level on handle, i was pulling the handle a 100 times, i assumed it would open anyways. the key lock-unlock did nothing, so door opens now. The door; window, lock, speaker have no power. I created a short circuit when cutting BLK PWR wire and that is what i need to track down, i have checked all fuses in engine bay, under the dash, fusable links at 12v batt. where else?