Blower Motor Not Working - 12V at Wire

Lincoln LS

  1. Caleb

    Caleb Active LVC Member

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    So just got this car up and running. AC controls all appear to work. Turn on fan, everything changes on screen. I can hear actuators moving, but no fan comes on.

    removed blower motor. I have 12V at the wiring harness. But when I hook up the fan directly to a battery, it works fine.

    what gives? Module? Resistor?
     
  2. joegr

    joegr Dedicated LVC Member

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    The Red/black wire will have +12V all the time that the DTAC is on. It is powered through relay 11-5 through fuse 16 under the hood.
    The Black/red wire is variably grounded (to control blower speed) by the blower speed control module. This module is under the dash in the air stream. You have to remove the dash or cut into the air box to change it out.

    Blower troubleshooting: 2006 Lincoln LS Workshop Manual
     
  3. Caleb

    Caleb Active LVC Member

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    good info. Are you suggesting this module is the culprit?
     
  4. Caleb

    Caleb Active LVC Member

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    Ran DATC self test. Received the following codes, can’t seem to find what they are.

    27 96
    24 26
     
  5. AmsterDutch

    AmsterDutch Dedicated LVC Member

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    2796 = solar radiation sensor fault.
     
  6. AmsterDutch

    AmsterDutch Dedicated LVC Member

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    From what I read it doesnt do much...at least not on the LS measures or reads the sun on the dashboard for the AC
     
  7. Caleb

    Caleb Active LVC Member

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    Ran through trouble steps.

    this is the one I found issue on.
    Resistance varied between 8-40 ohms.
    How do I go about repairing this circuit?

    6338D2EE-81BB-4976-B1E3-076AC79E3131.jpeg
     
  8. joegr

    joegr Dedicated LVC Member

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    Verify the connectors and the wire. Replace or bypass either connector if it is there, or replace the wire if it is the wire. Are you sure about how you tested and that your meter is good? It shouldn't vary at all (should always be 8, 40, or whatever), and 8-40 is not the expected failure. The common failure would be over-range (open).
     
  9. Caleb

    Caleb Active LVC Member

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  10. Caleb

    Caleb Active LVC Member

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    Alright so now that I’ve fixed transmission issues, replaced exhaust, and solved a misfire problem, I need some AC so I’m back over here :)

    Joe,
    must have had a bad connection or meter issue while previously Testing as you said.
    I restarted pinpoint test as you recommended previously, I got to the step I listed in picture, and put in a jumper wire, blower motor still DOES NOT run. HOWEVER it does run when you connect 12v directly to it. What say ye?

    C1ED5F15-D21E-46AD-8961-2804D55ADF09.jpeg
     

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