Range Inhibit Issue

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by CumminsPDX, Sep 16, 2022.

  1. Sep 16, 2022 #1
    CumminsPDX

    CumminsPDX Bobtail Member

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    Sep 16, 2022
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    I have a 2016 Freight Liner M2 106 that I’m having a constant battle trying to resolve this range inhibit issue. I have taken the truck to two different shops and seem to keep just throwing parts at it with no solution.. So far I’ve replaced the TCM, BHM, and they’ve checked wiring too. Hoping someone has had this happen and maybe might have some other solutions. Thank you so much for your time.
     
    CumminsPDX, Sep 16, 2022
    CumminsPDX, Sep 16, 2022
    #1
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  3. Sep 16, 2022 #2
    CumminsPDX

    CumminsPDX Bobtail Member

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    Sep 16, 2022
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    I forgot to mention that I had some fault codes as well.
     

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    CumminsPDX, Sep 16, 2022
    CumminsPDX, Sep 16, 2022
    #2
  4. Sep 17, 2022 #3
    Inderjit

    Inderjit Heavy Load Member

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    Sep 17, 2017
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    When is range Inhibit being activated? It should activate if you shift into gear with the park brake applied.
    Some trucks require you have the service brake applied when you shift into gear.
     
    Inderjit, Sep 17, 2022
    Inderjit, Sep 17, 2022
    #3
    BoxCarKidd Thanks this.
  5. Sep 17, 2022 #4
    Heavyd

    Heavyd Road Train Member

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    Parking brake applied still, or you need to make a service brake application while shifting out of neutral. So these switch inputs need to be checked.
     
    Heavyd, Sep 17, 2022
    Heavyd, Sep 17, 2022
    #4
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