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07-17-2006, 12:08 PM | #1 | |
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Dual climate control blowing heat on AC (DCCV removal instructions in post #107)
Well Im back with a new problem.
If you set the AC to a set temp and after a while you decide its too cold and change the temp up a little or a lot, the drivers side will start blowing hot air. But the passenger side stays cold. So I have to leave the temp set and change the fan speed to keep this from happening. Any ideas?
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Dennis 2003 Mach 1 2008 Expedition King Ranch 4x4 2010 Taurus Limited |
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07-17-2006, 12:42 PM | #2 | |
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Re: Dual climate control blowing heat on AC
Sounds like you have a blend door motor that may not be functioning properly. Have you run the climate control self diagnostics? If you've never done this, it may be posted on the forum (perform a search) or I'll try to round up the procedure tonight from the service manual.
-Rod |
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07-17-2006, 09:57 PM | #3 | |
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Re: Dual climate control blowing heat on AC
Per the factory service manual, below are the steps to pull diagnostic codes from the HVAC system:
Front Panel DATC Module Self-Test (On-demand Diagnostic Trouble Codes—DTCs) On-demand DTCs are those that are reported by an ECU when a failure is detected while executing a diagnostic test. For the DATC module this means that all faults (hard) that occur while the module is conducting a self-test shall be reported as an on-demand DTC.
Upon exit from the self-test the DATC module returns to operational status. The DATC module executes a hard (cold boot) reset which places the DATC system in the OFF mode. If a condition exists but no DTCs appear during the self-test, GO to Symptom Chart Condition: The DATC System Is Inoperative, Intermittent or Incorrect Operation. Always exit the self-test before powering the system down (system turned OFF). Front Panel DATC Module Display—Retrieve Continuous Diagnostic Trouble Codes (DTCs) Continuous DTCs are fault codes recorded by the DATC module which have occurred during normal operation. For the DATC module this means that all faults (intermittent or hard) that occur while the module is in an operational state shall be reported as a continuous DTC.
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07-18-2006, 09:10 AM | #4 | |
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Re: Dual climate control blowing heat on AC
Rod,
Your the greatest. I will print this out and give it a try.
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04-01-2008, 03:01 PM | #5 | ||
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Re: Dual climate control blowing heat on AC
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04-01-2008, 03:20 PM | #6 | |
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Re: Dual climate control blowing heat on AC
What year LS are you trying this procedure on? Are you following the steps precisely? Read the first step again. What you typed you're doing does not agree with step 1 for either of the procedures.
-Rod |
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04-01-2008, 03:34 PM | #7 | |
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Re: Dual climate control blowing heat on AC
There's a electronic control hot water pump for Dual climate controls.
1) When the car is at normal operating cond,turn off Car engine. 2) Turn on Ignition switch to the on pos,this will activate the pump,so you can have heat in car while Eng is off. 3) This will force the hot water through the Dual climate control solenoid. 4) Check Anti-freeze level! (Air-pockets) 5) If your still having Tbl ,it could be the Dual climate control solenoid. I had to take mine apart and cleaned with WD40. ** It's a good ideal to exercise this switch during the summer months. Note: Running this electric pump is a good way of working out air pockets during radiator flush treatments. Last edited by danielsatur; 07-23-2011 at 02:41 PM. |
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04-01-2008, 07:14 PM | #8 | ||
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Re: Dual climate control blowing heat on AC
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04-01-2008, 10:51 PM | #9 | |
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Re: Dual climate control blowing heat on AC
So you have the climate controlled seats. You tried turning the controller off, then simultaneously pressing both the Off and Ventilation switches, releasing and quickly pressing Auto? I don't know if starting with the unit off will help or not.
I don't have the manual for 2004, the procedure above is for 34Ford's 2001. -Rod |
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06-04-2008, 11:20 AM | #10 | |
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Re: Dual climate control blowing heat on AC
The problem is the self test feature is different for the 2003-2006 LS cars with the heated/cooled seats. I went thru hell to find it and finally took it to the dealer only to find out they did not know either!! So the mechanic called the hot line and got the correct instructions.
Ignition needs to be on. Car can be running or not. Push the OFF and the DEFROST buttons at the same time. Then press the AUTO button. You are now in self test mode. Let it run and you should get all 8's and every light segment lighted if everything is good. Otherwise write down the numbers displayed. The trouble codes are listed in the Helm shop manual. Push any button to end the test. You might want to save a copy of this. IT IS NOT IN THE HELM MANUAL!!! All of Ford/Lincoln service materials are wrong or don't even mention the differences. . . . |
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06-04-2008, 01:48 PM | #11 | |
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Re: Dual climate control blowing heat on AC
Now that is some great info. Thanks. Everything works fine now but maybe for future reference.
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06-15-2008, 07:48 AM | #12 | |
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Re: Dual climate control blowing heat on AC
a quick workaround that seemes to work when the AC is blowing cold and hot air.
hit auto, turn the temp all the way up to make it blow heat then turn the temp back down to cold. hit auto. sounds goofy but it has worked several times for me.
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-tswan Last edited by tkswan; 06-15-2008 at 01:36 PM. |
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06-23-2008, 12:54 PM | #13 | |
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Re: Dual climate control blowing heat on AC
Shorod
I'm not sure that I'm asking this question in the right place where you would get it, but here goes. I notice you recommend pulling the DTC's from the AC on the Lincoln LS. I've done that with my car but I need to know the description of the error. It is reading 12 61. Can you help? |
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06-23-2008, 09:50 PM | #14 | |
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Re: Dual climate control blowing heat on AC
The code 12 61 designates A/C solar radiation sensor circuit short to ground. The solar radiation sensor is the little dark bulb on the top of the dash board.
-Rod |
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07-02-2008, 03:20 PM | #15 | |
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Re: Dual climate control blowing heat on AC
I replaced the air temp sensor. Now I am getting the following codes: 12 59 and 50 41. What are these?
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