detroit series 60 fan stays on

Discussion in 'Freightliner Forum' started by 97 FLD, Nov 5, 2011.

  1. Sparkz

    Sparkz Light Load Member

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    Jul 10, 2011
    New Zealand
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    Have you done all the checks I suggested last week?
     
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  3. Pablo-UA

    Pablo-UA Road Train Member

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    1,618
    Oct 11, 2010
    Borispol, Ukraine
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    find somene with DDDL, Laptop and adapter to hook your truck and check all the components. it is 20 minutes deal to find the problem...
     
  4. 97 FLD

    97 FLD Bobtail Member

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    Nov 5, 2011
    0
    yes i have tried everything you had suggested.... Thanks
     
  5. Pablo-UA

    Pablo-UA Road Train Member

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    1,618
    Oct 11, 2010
    Borispol, Ukraine
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    just an example - auxialy inputs for A/C fan actuation ore fan override button.
     
  6. e46s54dr

    e46s54dr Bobtail Member

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    Nov 5, 2011
    Fontana, CA.
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  7. 97 FLD

    97 FLD Bobtail Member

    9
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    Nov 5, 2011
    0

    So i finally got the chance to get it hooked up to a computer the active code that it gives it: ID S253 FMI 2 and 12... Ok so what does that mean??

    Once again to all THANK YOU SO MUCH FOR ALL YOU HELP AND KNOWLEDGE.
     
  8. Sparkz

    Sparkz Light Load Member

    76
    15
    Jul 10, 2011
    New Zealand
    0
    These are both "Non volatile memory" faults with the ECM. They are displayed as flash code 53. Prior to software level 9.0 it used to bring the amber CEL on.
    The only cure is a new ECM.
    An ECM with an active code 53 may operate normally with no problems. You only know it is there when you connect a reader to check codes.
    I have also seen ECM's develop other symptoms with this code. These may or may not be related to the code 53. I tend to consider an ECM with code 53 as suspect, or on its way out.
    Did you check the inputs and outputs with the reader?
    What was the reader?
     
  9. Cliffyawn

    Cliffyawn Bobtail Member

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    Aug 16, 2016
    0
    Mine used to come on too soon at around 175 degrees and now it stays on even under 100 degrees. ..
     
  10. serozhah

    serozhah Light Load Member

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    Sep 8, 2013
    0
    mine came on and stayed on. I could hear the fan especially driving from dead stop as i would increas rpm before switching gears. Checked fuses - all good. opened the hood and saw that fan was spinning hard even though coolant is cold... Finally realized that a wire came off the engine fan switch... Once i reconnected the wire back to the switch, the engine fan got shut off. Fixed:))
     
    Last edited: Mar 18, 2017
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