I have an '88 Camry and the two lower settings for the AC doesn't work. The AC has 4 settings (Lo, 2, 3 and Hi) with buttons corresponding to each setting. When you push the button for either of the lower two settings (lo/2), the light turns on, but there's no air that blows. When you set the AC to the two higher settings (3/hi), there's air blowing out. I've tested all the fuses and pulled out the AC controller, but I can't seem to figure out what's wrong.
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It could be a junk switch or it could be bad contacts inside the transfer case motor.. Does the transfer case switch to the selected gears? Everytime? If so, you might try another switch. If it does the same, I would say the motor contacts are bad. Replace the motor if you want the lights, But I personally wouldn't do it until the motor quit switching gears. They're not cheap.
To check the computer for CODES:
1. Ignition switch ON. Engine OFF
2. Simultaneously push and hold the OFF and WARMER buttons on the
climate control panel for 3 seconds and release them
3. See if you get codes such as AC1347 or AC1348 or some other
LETTER/NUMBER combination display on the fuel data display along with
HISTORY or CURRENT with each code or codes that display... - AC1312 = AC high side temp sensor has an open circuit. - AC1314 = Evaporator inlet temp sensor has an open circuit. - AC1348 = Very low AC refrigerant condition.
Try addind about 1/2 can of freon to the system and see if the
compressor engages. If not, you will need to perform some diagnostic
tests on the above codes. I can e-mail you the pictures and directives
on how to fix the codes, But first you need to clear (ERASE) the codes
from the computer and see which codes return as current or history codes
which should display just after each code.
4. After the code or codes display you will see PCM?
5. Turn ignition OFF.
To clear the codes:
1. Re-enetr diagnostics like you did before and when you see PCM?
2. Push and release the LO button and you will see IPC?.
3. Push and release the LO button and you will see ACM?.
4. Push and release the HI button and you will see ACM CODES?
5. Push and release the LO button and you will see ACM CLEAR CODES?
6. Push and release the HI button and you will see ACM CODES CLEAR.
7. Turn OFF ignition key and wait 2 minutes and re-enter diagnostics
like I told you in the previous e-mail and let me know what codes appear
and if they are CURRENT or HISTORY.
The ECO HEAT/COOL button of your hybrid functions to reduce the consumption of electricity thus, a reduction of fuel consumption. An indicator 'ECO' appears on the air conditioning display to indicate that the mode is on. Of course, with the ECO HEAT/COOL on it'll take longer than the usual amount of time for the temperature to reach its normal or standard set temperature.
Your ECO HEAT/COOL mode won't function if your temperature control is set at 'LO" or 'HI" or if the air flow is in the "floor/windshield mode" or "windshield mode".
Hi my name is Juan and I do own a trailblazer with the same year 2002 and I read the problem you have let me try to help you Have you try to shift to 4hi with your transmission in neutral ? the transmission needs to be in neutral in order to shift the transfer case to 4hi and the vehicle needs to be completely stooped also is your service 4wd light on?? if the light is on your transfer case needs service and it can be as simple as the switch inside your car or a solenoid that has not been detected by the computer
I have had maybe 9 Suburbans, over the years. Whenever I put in 4WD (whether Lo or Hi), I drive
normally. THEN, when DISENGAGING, I always drive the vehicle in REVERSE maybe 75 yards
AFTER placing in 2WD mode. Sometimes, still, on my '96 Suburban, --- even though the manual says NOT REQUIRED, it will "stick" in 4WD, UNLESS I take above action. Hope this might help.