A/C system diagnostics- Need codes.
08-06-08, 01:04 PM
#31
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Hmmm, so you recharged your a/c, then 2 months later you get code 43 and blow warm air? Did you read code 43 before/after the car started blowing warm air?. The air outlet servomotor circuit failure shouldn't affect your air temp, just control of where the air is going to, like the vent, floor, etc...
08-19-08, 10:07 AM
#32
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Hmmm, so you recharged your a/c, then 2 months later you get code 43 and blow warm air? Did you read code 43 before/after the car started blowing warm air?. The air outlet servomotor circuit failure shouldn't affect your air temp, just control of where the air is going to, like the vent, floor, etc...
Last edited by rudedog35; 08-19-08 at 11:44 AM.
08-25-08, 03:05 PM
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Based on your blinking AC light, it sounds like you have code 22 as well. You're not reading that code because it only displays when the condition is current, meaning your engine has to actually be on and you have to be in the diagnostic check mode. Anyway, that is probably why you are blowing warm air. Code 43 shouldn't affect the air temp. Code 22 is caused by 1.bad compressor 2.Drive belt tension or 3.Compressor lock circuit.
08-30-08, 12:48 PM
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Hmmm, so you recharged your a/c, then 2 months later you get code 43 and blow warm air? Did you read code 43 before/after the car started blowing warm air?. The air outlet servomotor circuit failure shouldn't affect your air temp, just control of where the air is going to, like the vent, floor, etc...
Last edited by 818sc400; 08-30-08 at 12:54 PM.
07-09-09, 11:35 PM
#36
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Back form the dead!My 93 sc400 is showing a code 21(even with my led flashlight pointing on the solar sensor) and a code 43,The a/c just started blowing hot air 2 days ago.before that it was ice cold.The compressor still kicks on when the a/c is turned on.Anybody know which servo I should be looking at?It beeps when it displays both codes also.
Thanks,
Philip
Thanks,
Philip
09-29-09, 06:30 PM
#37
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well i seem to have 1-uped everyone elses issue... hopefully someone knows/has experienced this before:
i just got my alarm installed, ( and so yes i thought it would be the installers fault)---still do....
my climate control works 50%
my heat works, a/c works, and different modes work along with the screen
my issue is i normally drive around at 69-72 degrees, NO a/c, open circulation....
esentially just blowing ambient air for circulation..
after i got the alarm installed i did the same by turning the fan on and HOT AIR!! i can hear the valve open up to circulate from the engine block!!
the ONLY way my air comes out remotely "ambient" is a max cool.
and with the A/C on it DOES blow cold.... and other "6X-8X' temp blows out hot air!!
any input??
THanks
i just got my alarm installed, ( and so yes i thought it would be the installers fault)---still do....
my climate control works 50%
my heat works, a/c works, and different modes work along with the screen
my issue is i normally drive around at 69-72 degrees, NO a/c, open circulation....
esentially just blowing ambient air for circulation..
after i got the alarm installed i did the same by turning the fan on and HOT AIR!! i can hear the valve open up to circulate from the engine block!!
the ONLY way my air comes out remotely "ambient" is a max cool.
and with the A/C on it DOES blow cold.... and other "6X-8X' temp blows out hot air!!
any input??
THanks
09-29-09, 07:20 PM
#38
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well i seem to have 1-uped everyone elses issue... hopefully someone knows/has experienced this before:
i just got my alarm installed, ( and so yes i thought it would be the installers fault)---still do....
my climate control works 50%
my heat works, a/c works, and different modes work along with the screen
my issue is i normally drive around at 69-72 degrees, NO a/c, open circulation....
esentially just blowing ambient air for circulation..
after i got the alarm installed i did the same by turning the fan on and HOT AIR!! i can hear the valve open up to circulate from the engine block!!
the ONLY way my air comes out remotely "ambient" is a max cool.
and with the A/C on it DOES blow cold.... and other "6X-8X' temp blows out hot air!!
any input??
THanks
i just got my alarm installed, ( and so yes i thought it would be the installers fault)---still do....
my climate control works 50%
my heat works, a/c works, and different modes work along with the screen
my issue is i normally drive around at 69-72 degrees, NO a/c, open circulation....
esentially just blowing ambient air for circulation..
after i got the alarm installed i did the same by turning the fan on and HOT AIR!! i can hear the valve open up to circulate from the engine block!!
the ONLY way my air comes out remotely "ambient" is a max cool.
and with the A/C on it DOES blow cold.... and other "6X-8X' temp blows out hot air!!
any input??
THanks
ok, well i seemed to find out some info.... i have codes 11 and 21 come up....
but from ive read on other threads is that it should be the ambient temp sensor, since i get one extreme of cold or one of hot only...
anyone?
09-29-09, 07:21 PM
#39
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What vwynn is saying is that if your ambient temp sensor fails, the air coming out will be either max cool or max hot but no in between. However, the manual disagrees (not saying I do) because checking this circuit is not part of diagnosing "No temperature control, only max cool or max hot". In any case, yes your temp circuit failure is a possible cause to your air temp problem-according to the diagnostic chart.
i have codes 11 and 21
but i should have 12 according to what you wrote??
05-31-11, 01:34 PM
#40
Bumping this thread because I have a problem similar to a person who posted in here. I have a new compressor/drier installed and my system is charged but blowing hot air with only a code 43 registering. I can still fully control the direction of airflow (face, feet, etc). I understand that code 43 corresponds to the "Air Outlet Door Servomotor Circuit" which should not have anything to do with air temperature but I don't understand why I am registering it when my directional control is still flawless. Any input? I'm tired of sweating my *** off in this car. I'm really starting to hate driving!
Last edited by BartleDoo; 05-31-11 at 01:37 PM.
05-31-11, 02:02 PM
#41
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^^ I would disregard the code 43 as my car is throwing the same code and my ac blows fine after replacing the compressor two weeks ago.
Have you inspected the wiring at the compressor as well as the high pressure switch?
After replacimg my compressor I had the same issue ( compressor would not turn on ) further investigation revealed that one of the wires leading to the compressor was cut.
Have you inspected the wiring at the compressor as well as the high pressure switch?
After replacimg my compressor I had the same issue ( compressor would not turn on ) further investigation revealed that one of the wires leading to the compressor was cut.
05-31-11, 02:22 PM
#43
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^ 2000 rpm? Have you checked your freon level? When you turn the ac on do you see the ac compressor clutch spinning? If not you may be low on freon, or have a wiring issue. Inspect wires leading to the compressor.
Also check the a/c manetic clutch relay in the fusebox, you can swap it with the starter relay and rule that out.
Start with the easy things first.
Also check the a/c manetic clutch relay in the fusebox, you can swap it with the starter relay and rule that out.
Start with the easy things first.
05-31-11, 02:29 PM
#44
^^ I would disregard the code 43 as my car is throwing the same code and my ac blows fine after replacing the compressor two weeks ago.
Have you inspected the wiring at the compressor as well as the high pressure switch?
After replacimg my compressor I had the same issue ( compressor would not turn on ) further investigation revealed that one of the wires leading to the compressor was cut.
Have you inspected the wiring at the compressor as well as the high pressure switch?
After replacimg my compressor I had the same issue ( compressor would not turn on ) further investigation revealed that one of the wires leading to the compressor was cut.