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I've got a 2000 SR5, 4.7, 4WD. Recently when I select 4WD, nothing happens.

Discussion in '1st Gen Tundras (2000-2006)' started by noyfub, Sep 12, 2022.

  1. Sep 12, 2022 at 8:07 AM
    #1
    noyfub

    noyfub [OP] New Member

    Joined:
    Sep 10, 2022
    Member:
    #83160
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    Vehicle:
    2000 Tundra. 4.7, 4WD
    The Light doesn't flash. There is no sound coming from the Transfer case. The fuses are good and power is getting to the Center integration panel and the 4WD ECU. The pin on the cable going to the ECU seems to change state when the button is pushed. I'm thinking the ECU is bad. Any Ideas?
     
  2. Sep 12, 2022 at 3:10 PM
    #2
    bfunke

    bfunke New Member

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    Bryan
    South Carolina
    Vehicle:
    2018 Tundra, 2000 Tundra
    Have you checked the actuator at the transfer case?
     
  3. Sep 15, 2022 at 11:39 AM
    #3
    noyfub

    noyfub [OP] New Member

    Joined:
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    Vehicle:
    2000 Tundra. 4.7, 4WD
    Yes it works when I bypass the ECU. Haven't tried the front Actuator yet.
     
  4. Sep 15, 2022 at 11:41 AM
    #4
    Jack McCarthy

    Jack McCarthy Navigating the luminiferous ether to see the light

    Joined:
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    Bill
    North of Boston
    Vehicle:
    2002 Tundra AC SR5 V8 4x4
    When was the last time it was used?
     
  5. Sep 15, 2022 at 11:50 AM
    #5
    shifty`

    shifty` trying to remember when but it makes me dizzy

    Joined:
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    ATL
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    I'm going to ask the stupid question because you never know until you ask.

    You're hitting the 4HI button, right?
    Nothing flashes when you press the button?
     
  6. Sep 19, 2022 at 12:27 PM
    #6
    irhunter

    irhunter New Member

    Joined:
    Apr 2, 2019
    Member:
    #28507
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    Vehicle:
    '03 Tundra V8, AT, 4x4, extra cab
    FWIW.

    The FSM suggests moving the truck back and forth...if you get no 4x4 light after pushing the button.


    Roy
     

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