Pulled codes and found out I'm PAST my limit!
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 4 of 4
Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Pulled codes and found out I'm PAST my limit! in Past Cadillac Vehicle Discussion; Pulled the codes today after I noticed that the drivers side A/C blows warmer (by hand it seems like 5 ...
  1. #1
    JVRudnick's Avatar
    JVRudnick is offline Cadillac Owners Fanatic
    Automobile(s): 2001 DTS : 2005 CTS
    Join Date
    Mar 2006
    Location
    In Waterdown, near Toronto, Ca
    Age
    65
    Posts
    200

    Pulled codes and found out I'm PAST my limit!

    Pulled the codes today after I noticed that the drivers side A/C blows warmer (by hand it seems like 5 to 10 deg?) than the pass side....and I got a IPM B0409.

    Search here tells me this is something to do with the 'actuator'

    So...past my ken here, what do I need to do to get this fixed? What'd same cost say at a dealer or at my local garage? And if I don't fix it, what will that lead to?

    Oh, forgot...all winter the drivers side vents pushed cold air even with the heater on FULL and only the pass side got the nice hot air. Had my heater core totally flushed, but made no difference....

    :-)

    Jim

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Dave S Texas's Avatar
    Dave S Texas is offline Cadillac Owners Enthusiast
    Automobile(s): '87 Coupe DeVille 4.1L FWD(New engine '08) 1981 F100 '03FXDL
    Join Date
    May 2008
    Location
    Austin(area), Tx
    Age
    71
    Posts
    855

    Re: Pulled codes and found out I'm PAST my limit!

    IPM is air-bag related. Not a DIY job.

    "So...past my ken here..." What?? Explain

    The air flow problem is most likely a vacuum problem: loose/bad hose, disconnected hose, faulty vacuum motor, programmer fault.

  4. #3
    JimD is offline Cadillac Owners Connoisseur
    Automobile(s): '98 STS (RIP @ 206,xxx miles)
    Join Date
    Sep 2003
    Location
    Metro ATL
    Posts
    4,838

    Re: Pulled codes and found out I'm PAST my limit!

    B0409 - Air Mix Door #1 Range Error

    There are several (many!) electric door acutators buried in the HVAC plumbing forward of and under your dashboard. One of them (#1) is reporting the wrong position information back to the HVAC control module.

    It "could be" a failed acutuator.

    Or it could be as simple as one actuator is out of sync with the control module. It will be worth your time to try the following and check the results;

    Key On
    Select one of the Manual modes with the <MODE> button
    A/C Off
    Fan speed minimum
    Select driver side and passenger side temperature to 60F/15C
    Slowly (one detent at a time) increase both temperature selections to 90F/32C
    Repeat down to 60F/15C
    Key Off

    Consider doing the above several times. No guarantees given or implied....

  5. #4
    Submariner409's Avatar
    Submariner409 is offline If it won't run, install a sound system
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    75
    Posts
    46,072

    Re: Pulled codes and found out I'm PAST my limit!

    Scotch/Irish/English/Canadian for "out of my field of knowledge"..........

    In the right console/footwell area and in front of the glove box (Oh, joy...) are a couple of electric actuator motors and gears which control air distribution. There is a history of these actuators either physically breaking or having bad electrical connections.

    Either get on eBay for a Helm/GM Factory Service Manual or subscribe your car to www.alldatadiy.com for one or three years.

    (Typing at the same time as JimD.)

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting