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ODB II port has power with ignition off? 02 Tacoma

Discussion in '1st Gen. Tacomas (1995-2004)' started by inlinewhine, Nov 4, 2009.

  1. Nov 4, 2009 at 8:55 AM
    #1
    inlinewhine

    inlinewhine [OP] Member

    Joined:
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    ND/MN
    Vehicle:
    02 X-Cab 4x4 SR5 2.7L
    Ignition is off, when I plug in the scan tool it powers up and starts scanning for codes but never acomplishes the scan even if I turn ignition on. Corect me iff i'm wrong but the scan tool shouldn't power up untill ignition is on right.
    Also my radio has no sound, my driver door speaker pops every once in a while upon engine startup, and if the vehicle sits for a few days the battery is nearly drained. How r these inter related??? :confused:
     
  2. Nov 4, 2009 at 9:39 AM
    #2
    slickyd

    slickyd Well-Known Member

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    David
    Alex City, AL
    Vehicle:
    03 PreRunner SR5
    don't know about the scanner but it sounds like you hot wire on the radio is loose and is grounding out and draining your battery. and it might be touching your speak wire making it pop. I would take it out and check/redo all the connections back there. Is it stock or aftermarket headunit?
     
  3. Nov 4, 2009 at 10:03 AM
    #3
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    Ben
    Beech Creek
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    5100's all on fours
    The OBDII port is powered at all times. No need to worry about that. I think you may have two different issues: bad radio or ground and a dead cell in your battery.
     
  4. Aug 10, 2012 at 2:29 PM
    #4
    inlinewhine

    inlinewhine [OP] Member

    Joined:
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    Member:
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    Messages:
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    Gender:
    Male
    ND/MN
    Vehicle:
    02 X-Cab 4x4 SR5 2.7L
    No grounding issues, the factory radio was just bad. Pioneer radio sounds great.
     
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