A/C not working?

Tiny
NPOLCHES82
  • MEMBER
  • 2006 HONDA ACCORD
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
My uncle had overcharged the system and now failed. I had vacuumed, replaced the low/high pressure sensor, relays and recharged. Compressor does not engage. I have no power going through the cable to the compressor. I ran a jump wire from battery to the cable to compressor and didn't seem to click. Not sure what else I could try. It ran awesome before until it was overcharged. I checked the DTC self check on the radio control panel and came up with K and O problems also.
Saturday, August 31st, 2019 AT 9:24 AM

28 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Even with it overcharged, there are safety features built into the system from damaging the components.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

How much voltage is at the wire to the compressor with it on?

I will attach a wiring diagram for you to follow for the system.

Roy
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Tuesday, August 25th, 2020 AT 1:20 PM
Tiny
NPOLCHES82
  • MEMBER
  • 6 POSTS
I checked it out with a light tester. I dont have a voltage meter. I did try to jump it from direct battery and no click sound. Am I supposed to add a ground also to the compressor? All I did was use a power wire.
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Tuesday, August 25th, 2020 AT 1:20 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Is it a 2 wire connector or 1 wire?

If it is 1 wire, no ground needed.

Roy
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Tuesday, August 25th, 2020 AT 1:20 PM
Tiny
NPOLCHES82
  • MEMBER
  • 6 POSTS
It is a 1 wire. I put the light tester to it. But nothing. I got a get a voltage meter. All fans come on when A/C button is pressed.
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Tuesday, August 25th, 2020 AT 1:21 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Check the fuse I circled in the diagram for power on both sides with the key on.

Roy
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Tuesday, August 25th, 2020 AT 1:21 PM
Tiny
NPOLCHES82
  • MEMBER
  • 6 POSTS
All fuses, relays are good.
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Tuesday, August 25th, 2020 AT 1:21 PM
Tiny
NPOLCHES82
  • MEMBER
  • 6 POSTS
When I hit the A/C button. Cars rpm's dropped a little like it wants to engage. But nothing.
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Tuesday, August 25th, 2020 AT 1:21 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
So the compressor did not engage when you jumped it? If that is true then you have a failed compressor.

Roy
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Tuesday, August 25th, 2020 AT 1:21 PM
Tiny
NPOLCHES82
  • MEMBER
  • 6 POSTS
Yes, I took a power cable from battery to the wire from compressor and nothing.
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Tuesday, August 25th, 2020 AT 1:21 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, you have a failed compressor.

Roy
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Tuesday, August 25th, 2020 AT 1:21 PM
Tiny
DON-HARRIET
  • MEMBER
  • 5 POSTS
  • 2006 HONDA ACCORD
Air conditioning problem when on max cool driver side air is warm while passenger side is cold with dual temperature output turned off. There are no DTC codes and the sensor codes were:

1. 33.
2. 29.
3. 02 in shade 35 in sun.
4. 73.
5. 32.
6. D1 on low 99 on high temperature.
7. 01 on low 99 on high.
8. 00.
9. D0 on low 44 on high.

#9 (vent temperature air out) may be the problem - but why would it only affect the driver side?
All of the air-mix motor looked okay ( I actually removed the drivers side to verify the cable and lever were moving properly) and the heater valve seem to open and close okay.

I tried slowly turning the temp (about one degree every two seconds) to max, then slowly turning it to low three ways:
1. Both sides the same (dual off).
2. Driver side only.
3. Passenger side only.

Results:
1. When at max - equally hot air from both sides. At minute passenger side cold, driver side about the average temperature of the car.
2. Passenger side stayed cold - Driver side hot at max, avg car temperature at minimum.
3. Driver side stayed at avg car temperature - passenger side hot at max, and cold at minimum.

Has anyone else seen this problem? Better yet resolved it?
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi don-harriet,

It sounds like one of the blend door actuators is not closing completely.

Here is a guide that will show you what you are in for when replacing them and testing the air door operation:

https://www.2carpros.com/articles/replace-blend-door-motor

After going through the data provided, I suspect the air mix door to be stuck in driver side or is leaking.

Here are the blend door locations: Mix, Mode and recirculation.

Check out the diagrams (below).

Please let us know what you find. We are interested to see what it is.

Cheers
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+4
Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
DON-HARRIET
  • MEMBER
  • 5 POSTS
I am a bit confused. Is the air mix door controlled by the air mix control motor? When I pulled the driver side air mix control motor and moved the lever by hand, I got the range of ambient air (full up) to hot air (down position). Is the "air mix door" different from this?
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+2
Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Yes, the motor controls the air mix door.
There are sponges to act as seals and this could be worn causing the cool air to be heated up when travelling to the air vent.
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-1
Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
DON-HARRIET
  • MEMBER
  • 5 POSTS
I guess this means that the vent system itself needs to be taken apart to repair/replace these sponges. I am surprised that the service manual does not really cover this problem other than the vague picture on 21-86. How is this corrected?
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
HAGERGF
  • MEMBER
  • 1 POST
  • 2006 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 54,000 MILES
EX model with dual zone climate control. On a recent long drive in 90+ degree temps the air conditioner was struggling to cool the car. I noticed that the air vents on the drivers side of the vehicle were blowing warm air while the AC is on but the passenger side is blowing cool (not cold). I put my hand on the center vents and could feel a noticable difference between passenger and driver side air. The dual climate control was set to the same temp for both sides of the vehicle and even when I set the driver's side to it's lowest setting nothing improved. The blower appears to be functioning properly by increasing in speed when a lower temp is input. Any ideas what the problem might be?
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi hagergf,

Honda has a self diagnostic built in the climate control system but I do not know if it works for your model

1. Turn ignition switch on.

2. Turn AC on in Auto mode.

3. Wait for 1 minute on temp display at 18 degrees.

4. Push AUTO and OFF together.

5. If any indicator lights are showing on the control panel, something is wrong, let me know what it is and I will try to get the answer.
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+3
Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi,

You mentioned no DTC's, was it scanned or you used the system self diagnostic?
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-2
Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
AGG2
  • MEMBER
  • 1 POST
The diagnostic dosnt works, . No codes in my accord EX 2005, . Conditioned Air dos ´nt works propperly. Rigth side its (cold) ok, . Left side is warm, . Im in Mà ©xico city, . Thanks. I hope you tell me somthing to do.
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)
Tiny
DON-HARRIET
  • MEMBER
  • 5 POSTS
I used the built in self diagnostics. I got no codes, not even any blinking. So I tried it several times. I turned the ignition switch on, the pressed the "auto" button, while holding the "auto" held down the "off" button. To make sure I held it for about two minutes, no codes.
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Thursday, December 17th, 2020 AT 10:21 AM (Merged)

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