A/C not working?

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi agg2,

You won't see any codes. You would only see the indicators on the air modes showing. Eg. Air flow to upper, air flow to legs, A/C on, A/C off, fan speed at minimum, fan speed at maximum, fan speed at 2nd point only.

If there is none, you need to check for dislodged or stuck air mix vent linkages.
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi don-harriet,

Try disconnecting the battery negative terminal for ten seconds and try again.

If it did not work, try this and see if there is anything on record.

How to retrieve a dtc (without hds):

The audio-HVAC display panel has a self-diagnosis function for climate control. To run the self- diagnosis function, do the following:
1. Turn the ignition switch ON (II).
2. Set the driver's temperature control dial or button on MAX Cool.
3. Press and hold the OFF button.
4. While holding the OFF button, press the rear window defogger button five times within 10 seconds.
The self-diagnosis will begin.

Locating Auto Button And Off Button (Without Navigation System) Courtesy of AMERICAN HONDA MOTOR CO., INC.


https://www.2carpros.com/forum/automotive_pictures/192750_HVACButton06Accord_1.jpg



Locating Auto Button And Off Button (With Navigation System) Courtesy of AMERICAN HONDA MOTOR CO., INC.


https://www.2carpros.com/forum/automotive_pictures/192750_HVACButton06Accord02_1.jpg



If there are any problems in the system, the temperature indicator will light up the segment (A through Q) corresponding to the error. The temperature indicator will then alternate every second between displaying "88" (all segments lit) and the error code segment (A through Q).

NOTE: The system will only display the DTC when the AUTO and OFF buttons are pressed. If you release the buttons, the display will go blank. To return the display, simply press the AUTO then the OFF buttons again.

If no segments light up, the system is still not operating properly, check the sensor inputs to the climate control unit, or refer to SYMPTOM TROUBLESHOOTING INDEX .

Fig. 9: Identifying Drivers Temperature Indicator Courtesy of AMERICAN HONDA MOTOR CO., INC. Fig.


https://www.2carpros.com/forum/automotive_pictures/192750_HVACButton06Accord03_1.jpg



10: Identifying Passenger's Temperature Indicator Courtesy of AMERICAN HONDA MOTOR CO., INC.


https://www.2carpros.com/forum/automotive_pictures/192750_HVACButton06Accord04_1.jpg



Cancelling the Self-diagnostic Function
5. Turn the ignition switch OFF to cancel the self-diagnostic function. After completing repair work, run the self-diagnostic function again to make sure that there are no other malfunctions.

Page 1 of 1 CLIMATE CONTROL (EXCEPT HYBRID & V6) -2006 Honda Accord EX 9/5/2008
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
DON-HARRIET
  • MEMBER
  • 5 POSTS
I got no DTC error codes following your instructions.

I disconnected the battery needed to enter the security code and reset the clock, but no change in the A/C.

I re-ran the DTC test - no errors again.
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi again,

Looks like you have to check the control unit or the internal linkages for fault.
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
OLUSHOLA
  • MEMBER
  • 1 POST
Hello All. I guess this reply may be late. Nonetheless, I still want to give it all the same. I experienced the same problem with my 2006 Honda Accord EX-L four cylinder. When the AC was on, the passenger output was cold while the driver's side was hot. I confirmed that the air mix control motor was working correctly. Then, I removed the cabin filter under the glove box and I found it very dirty. I cleaned this filter and topped up the refrigerant. Now the problem is solved. In case you have this same problem, you may wish to try this simple solution. Thanks.
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Great addition to this thread! Please feel free to help out whenever you are on the site :)

Here is the way to change the cabin air filter, this will give you an idea:

https://www.2carpros.com/articles/how-to-change-an-air-cabin-filter

This is how it is done on your car (below).

Cheers, Ken
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
JOHN DIBELLA
  • MEMBER
  • 1 POST
  • 2006 HONDA ACCORD
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 82,000 MILES
I replaced the blend door on the drivers side. I am still getting cool air on that side. The passenger side is blowing A/C. What else could it be?
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Thursday, December 17th, 2020 AT 10:22 AM (Merged)
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

Have you checked your climate control display for any Heating Ventilation Air Conditioning (HVAC) Direct Trouble Codes (DTC)(s) yet? I have included the directions for pulling them up in the diagrams down below. Please go through the guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
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Thursday, December 17th, 2020 AT 10:22 AM (Merged)

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