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Brake lights won't work....03 Tacoma

Discussion in 'Technical Chat' started by skizman, Sep 22, 2018.

  1. Sep 22, 2018 at 12:02 PM
    #1
    skizman

    skizman [OP] Member

    Joined:
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    First Name:
    ski
    Vehicle:
    2003 Tacoma 2.4
    All 3 brake lights won't come on, but all other lights work. This is what I did.
    Replaced the brake light switch...
    Replaced tail light relay under hood in fuse box...
    Checked and replaced tail and brake light fuses under hood and under dash.
    Tried different bulbs...
    Checked ground wire under bumper.
    Unplugged brake light switch plug and checked with multimeter, checked all contacts with probes and there was no voltage.
    Help!!!!!!!!!!! I have no idea what to try next.
    Brake lights always work without ignition on. Not now.
     
  2. Sep 22, 2018 at 1:54 PM
    #2
    Muddinfun

    Muddinfun Well-Known Member

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  3. Sep 22, 2018 at 2:51 PM
    #3
    skizman

    skizman [OP] Member

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    Thanks, I'll check it out!
     
    Muddinfun likes this.
  4. Sep 24, 2018 at 8:44 AM
    #4
    Mulepadre

    Mulepadre Mulepadre

    Joined:
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    Central Arkansas
    Vehicle:
    2003 Std Cab 2.7L 4x4 & 2024 Off Road
    Bilstein 5100s, Deaver Leaf Springs, JBA UCAs on 2003 King 2.5 shocks front and rear on Off Road
    Looking at the schematic... besides the brake light switch you have a control relay. As you checked the switch and fuse that is likely the culprit. If that checks out then check your skid control ECU, but be careful testing that. I would find a manual to guide in that.
     
  5. Sep 24, 2018 at 8:51 AM
    #5
    Muddinfun

    Muddinfun Well-Known Member

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  6. Sep 24, 2018 at 11:32 AM
    #6
    skizman

    skizman [OP] Member

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    2003 Tacoma 2.4
    Thanks for that info! Now, all I have to do is find this control relay.
     
  7. Sep 24, 2018 at 11:33 AM
    #7
    skizman

    skizman [OP] Member

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    no
     
  8. Sep 24, 2018 at 11:36 AM
    #8
    Muddinfun

    Muddinfun Well-Known Member

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    OOP! I just realized from the thread title that you have an '03. Sorry, that schematic I posted is for a 2nd gen.
     
  9. Sep 24, 2018 at 2:10 PM
    #9
    skizman

    skizman [OP] Member

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    Ok....thanks for the thought!
     
  10. Sep 24, 2018 at 2:15 PM
    #10
    Mulepadre

    Mulepadre Mulepadre

    Joined:
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    Messages:
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    Central Arkansas
    Vehicle:
    2003 Std Cab 2.7L 4x4 & 2024 Off Road
    Bilstein 5100s, Deaver Leaf Springs, JBA UCAs on 2003 King 2.5 shocks front and rear on Off Road
    I am sending you a private message with the proper wiring diagrams
     

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