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Ecu pinout

Discussion in '3rd Gen. Tacomas (2016-2023)' started by 999TRD, Jul 13, 2024.

  1. Jul 13, 2024 at 9:53 PM
    #1
    999TRD

    999TRD [OP] Member

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    Hi, is there anyone here that might have a pinout or know where i can find it. I need to know the location of the wires that go from the knock sensors and where they go on the ecu
    Thanks.
     
  2. Jul 13, 2024 at 9:59 PM
    #2
    TnShooter

    TnShooter The TacomaWorld Stray

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    For the 3.5?

    upload_2024-7-14_0-56-21.png
    upload_2024-7-14_0-57-46.png
    upload_2024-7-14_0-59-23.png
    upload_2024-7-14_1-2-28.png
     
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  3. Jul 13, 2024 at 9:59 PM
    #3
    Vlady

    Vlady Well-Known Member

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    upload_2024-7-13_21-57-19.png

    E11 connector of ECU. Note. Each bank has a junction connectors.
    Mice chewed through wires?
     
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  4. Jul 13, 2024 at 10:00 PM
    #4
    BLtheP

    BLtheP Constantly Tinkering Member

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    Bank 1 on the right side of engine goes to pins 19 and 29 on connector E11.

    Bank 2 on the left side of engine goes to pins 18 and 28 on connector E11.

    Lol. I see I posted same time as a few others.

    IMG_5509.jpg IMG_5510.jpg
     
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  5. Jul 13, 2024 at 10:02 PM
    #5
    Dm93

    Dm93 Test Don't Guess

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    Bank 1 is E11 Pin 19 (Black) and E11 Pin 29 (White)
    Bank 2 is E11 Pin 18 (Green) and E11 Pin 28 (Red)
     

    Attached Files:

  6. Jul 13, 2024 at 10:03 PM
    #6
    TnShooter

    TnShooter The TacomaWorld Stray

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    All of us were all over it at once.
    Not too often that happens.
     
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  7. Jul 13, 2024 at 10:05 PM
    #7
    999TRD

    999TRD [OP] Member

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    Yes, problem is they chewed up the part that goes to the main harness, so I'm having a really fun time trying to fix it, and yes is for the 3.5, thanks a lot yall.
     
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  8. Jul 13, 2024 at 10:07 PM
    #8
    Vlady

    Vlady Well-Known Member

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    It seems there have been a weekly knock sensor lose.
     
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  9. Jul 13, 2024 at 10:12 PM
    #9
    999TRD

    999TRD [OP] Member

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    It's really a pain, thats why i was looking for the pinout, I'm looking into making a whole new harness and cancel the old part, that way i can stress less trying to reach between the cab and engine in order to fix where it's broken
     
  10. Jul 13, 2024 at 10:15 PM
    #10
    Vlady

    Vlady Well-Known Member

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    Is it easy to unwrap a few inches if the harness and solder broken wires?
     
  11. Jul 13, 2024 at 10:19 PM
    #11
    Dm93

    Dm93 Test Don't Guess

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    The knock sensor wires are shielded to suppress electrical noise, that kinda complicates repair and also running a new un-shielded harness may have issues with electrical noise.
     
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  12. Jul 15, 2024 at 8:34 PM
    #12
    999TRD

    999TRD [OP] Member

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    It is kind of difficult since is not the harness that connects to the actual knock sensors, it's the part where that harness connects to, the one that goes to the main harness, the thing here is that this tiny part is just tucked behind the engine, i ended up soldering it but i had to disconnect several plugs all the way from the transmission in order to safely pull it to where i could cut the insulation, solder the new connector (left if a bit longer so that is not to tight like it is from the factory) put heat shrink insulation in each little wire, then put it back into the oem conduit, wrapped tightly with electrical tape, then a wrap with 3m temflex cloth tape, then another piece o wire loom just to make sure lol. Kinda tedious but i wanted to make sure it doesn break anymore.
    My truck is running incredibly smooth now btw
     
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  13. Jul 15, 2024 at 8:48 PM
    #13
    999TRD

    999TRD [OP] Member

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    This is the wire that was broken, it came off of a pin from the connector, I forgot to take a photo when it was fixed, guess I was just too excited to finally had it doneScreenshot_20240712_194646_Gallery.jpg
     
  14. Jul 15, 2024 at 11:54 PM
    #14
    Toycoma2021

    Toycoma2021 Well-Known Member

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    The only thing I could possibly add to that would be to use "adhesive lined" heat shrink. Good work.
     

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