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check climate unit datalink

Discussion in 'Volvo Forum' started by beckstr, Feb 9, 2013.

  1. Feb 9, 2013 #1
    beckstr

    beckstr Bobtail Member

    11
    1
    Feb 9, 2013
    0
    I got 2004 volvo 670 with egr Cummins ISX well the problem is my HVac quit working. To be more precise it will no turn blower in the cab and there is the message on the dash "check climate unit datalink". the blower in the sleeper works. ac clutch wont engage. i replaced the blower and the resistor . problem still there...all other functions as flow control and temperature are working . tried to diagnose under climate unit but comes back as operation failed. checked current on compressor and its not getting positive. what are your suggestions? thnks in advnce
     
    beckstr, Feb 9, 2013
    beckstr, Feb 9, 2013
    #1
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  3. Feb 9, 2013 #2
    Pablo-UA

    Pablo-UA Road Train Member

    7,604
    1,640
    Oct 11, 2010
    Borispol, Ukraine
    0
    Bad J1708 wiring to climat unit ore datalinl was buzy when climat unit "wanted" to get some data.. if code stored, pay no attention
     
    Pablo-UA, Feb 9, 2013
    Pablo-UA, Feb 9, 2013
    #2
  4. Feb 9, 2013 #3
    beckstr

    beckstr Bobtail Member

    11
    1
    Feb 9, 2013
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    Pablo-ua . The problem remains as the blower wont turn on its not getting negative current. J1708 is it the wire drawn from climate controls? Theres no code since it cant succesfully connect when you try to diagnose. Would you have a wiring diagram of the climate unit? Dont have idea of the location of this j1708. Thanks. Your help is very appreciated.
     
    beckstr, Feb 9, 2013
    beckstr, Feb 9, 2013
    #3
  5. Feb 9, 2013 #4
    DXN1EL

    DXN1EL Light Load Member

    67
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    Dec 25, 2012
    McAllen, TX
    0
    DXN1EL, Feb 9, 2013
    DXN1EL, Feb 9, 2013
    #4
  7. Feb 10, 2013 #5
    Pablo-UA

    Pablo-UA Road Train Member

    7,604
    1,640
    Oct 11, 2010
    Borispol, Ukraine
    0
    blower is PWM controlled with small MOSFET hidden in power regulator mounted on motor (front blower in dash)
     
    Pablo-UA, Feb 10, 2013
    Pablo-UA, Feb 10, 2013
    #5
  8. Aug 3, 2015 #7
    Suad Beske

    Suad Beske Bobtail Member

    4
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    Aug 3, 2015
    0
    I have same exact problem and I dont see that you guys posted anything that would solve this issue..pleaeese help
     
    Suad Beske, Aug 3, 2015
    Suad Beske, Aug 3, 2015
    #7
  9. Aug 3, 2015 #8
    Suad Beske

    Suad Beske Bobtail Member

    4
    1
    Aug 3, 2015
    0
    Pablooooo do you have any sugestions
     
    Suad Beske, Aug 3, 2015
    Suad Beske, Aug 3, 2015
    #8
  10. Aug 3, 2015 #8
    Suad Beske

    Suad Beske Bobtail Member

    4
    1
    Aug 3, 2015
    0

    Hi Beckstri,

    How did you solve the issue...I have sam problem with my volvo..
    Thanks
     
    Suad Beske, Aug 3, 2015
    Suad Beske, Aug 3, 2015
    #8
  11. Aug 5, 2015 #10
    Suad Beske

    Suad Beske Bobtail Member

    4
    1
    Aug 3, 2015
    0
    Got the issue resolved,my manual control unit died(the control where you turn on/off your AC/HEAT,adjusting it etc)..It was 350$ but to make sure that is the problem I took off mine and tried it first in my friends truck.

    Good Luck
     
    Suad Beske, Aug 5, 2015
    Suad Beske, Aug 5, 2015
    #10
    Roadric Thanks this.
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