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A/C compressor is always on, even with key off.

Discussion in 'Freightliner Forum' started by JohnnyC, Apr 20, 2021.

Page 1 of 2
  1. Apr 20, 2021 #1
    JohnnyC

    JohnnyC Light Load Member

    172
    64
    Feb 17, 2009
    virginia beach, virginia
    0
    I have a 2004 Century condo sleeper. A/C compressor clutch is always energized, even with the key off. Any clue where to look first?

    thanks,
    John
     
    JohnnyC, Apr 20, 2021
    JohnnyC, Apr 20, 2021
    #1
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  3. Apr 20, 2021 #2
    reeferwrencher

    reeferwrencher Medium Load Member

    552
    1,469
    Aug 4, 2018
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    Is there power to the clutch or maybe the clutch is seized
     
    reeferwrencher, Apr 20, 2021
    reeferwrencher, Apr 20, 2021
    #2
  4. Apr 20, 2021 #3
    JohnnyC

    JohnnyC Light Load Member

    172
    64
    Feb 17, 2009
    virginia beach, virginia
    0
    Power to the clutch key on or off.
     
    JohnnyC, Apr 20, 2021
    JohnnyC, Apr 20, 2021
    #3
  5. Apr 20, 2021 #4
    p608

    p608 Road Train Member

    2,181
    2,988
    Nov 10, 2016
    0
    relay
     
    p608, Apr 20, 2021
    p608, Apr 20, 2021
    #4
    reeferwrencher Thanks this.
  7. Apr 20, 2021 #5
    reeferwrencher

    reeferwrencher Medium Load Member

    552
    1,469
    Aug 4, 2018
    0
    As stated possible relay.If you can locate it and pull it out see if it shuts it off
     
    reeferwrencher, Apr 20, 2021
    reeferwrencher, Apr 20, 2021
    #5
  8. Apr 20, 2021 #6
    AModelCat

    AModelCat Road Train Member

    27,707
    145,153
    Jul 7, 2015
    Canuckistan
    0
    Sounds like a short to battery power.
     
    AModelCat, Apr 20, 2021
    AModelCat, Apr 20, 2021
    #6
  9. Apr 20, 2021 #8
    JohnnyC

    JohnnyC Light Load Member

    172
    64
    Feb 17, 2009
    virginia beach, virginia
    0
    Not my truck. My brothers. Mine, an 06 is fine. I’m just hoping someone here had run into this problem. Compressor is solid, charge is correct. I’ve swapped the relay out and the problem persists. I wish I could get hold of schematics for these trucks. Thanks to all for your suggestions all are valid but I’ve checked them.
     
    JohnnyC, Apr 20, 2021
    JohnnyC, Apr 20, 2021
    #8
    John E Walker Thanks this.
  10. Apr 20, 2021 #8
    RocketyMan

    RocketyMan Medium Load Member

    527
    309
    Jun 5, 2015
    0
    If only someone could help you....



    Last 6 of your vin?
     
    RocketyMan, Apr 20, 2021
    RocketyMan, Apr 20, 2021
    #8
    John E Walker Thanks this.
  11. Apr 20, 2021 #9
    JohnnyC

    JohnnyC Light Load Member

    172
    64
    Feb 17, 2009
    virginia beach, virginia
    0
    My brothers truck. I’ll post them as soon as I get them.
    Thanks
     
    JohnnyC, Apr 20, 2021
    JohnnyC, Apr 20, 2021
    #9
  12. Apr 20, 2021 #10
    JohnnyC

    JohnnyC Light Load Member

    172
    64
    Feb 17, 2009
    virginia beach, virginia
    0
    L98629 - last six
     
    JohnnyC, Apr 20, 2021
    JohnnyC, Apr 20, 2021
    #10
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