A/C quit working!??

[TSDuke]

Jump in my truck yesterday, its about 92* out, and I go to turn the AC on, nothing happened. It turns on, I can hear that noise it makes before it starts blowing, but nothing comes out. Its not like its just blowing warm air, its not blowing anything at all. Damn truck only has 3600 miles on it. I don't want to take it to the dealership. Any ideas of thing I should try? Should I disconnect the battery for a while? Please help, its hot here in the south!!

[JCZ]

Nothing at all?? No fan, no compressor turning?? Take a look at the fuse (look in you handbook).

[TSDuke]

I checked all the fuses, they all look good. Should I just replace them anyway. Any other suggestions? Thanks

[pmtcfhm]

Is the compressor cycling? If so, how often does it cycle?

[GRY GHST]

TSDuke,

If you have the EATC (Electronic Automatic Temperature Control) module which 2002 and 2003 Harley have, you can use it do some diagnostics. This information I gleaned from my Ford Service DVD:

Electronic Automatic Temperature Control Module Self-Test

The EATC module self-test will not detect concerns associated with data link messages like engine coolant temperature or vehicle speed signals. A scan tool must be used to retrieve these concerns.
The EATC module self-test will detect concerns in the system control functions and will display hard diagnostic trouble codes (DTCs) in addition to intermittent diagnostic trouble codes for concerns that occur during system operation. The vehicle interior temperature should be between 4°-32°C (40°-90°F) when performing the self-test. If the temperatures are not within the specified ranges, false in-car temperature sensor DTCs will be displayed.
The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.

To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTOMATIC button within two seconds. The display will show a pulse tracer going around the center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.
If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given.
If a condition exists but no DTCs appear during the self-test, refer to the Symptom Chart Condition: The EATC System Is Inoperative, Intermittent or Improper Operation.
To exit self-test and retain all intermittent DTCs, push the blue (cooler temperature) button. The control will exit self-test, retain all intermittent DTCs and then turn OFF (display blank).
To exit self-test and clear all DTCs, press the DEFROST button. The vacuum fluorescent display window will show 888 and all function symbols for one second. Then, the EATC control assembly will turn OFF (display blank) and all DTCs will be cleared.
Always exit the self-test before powering the system down (system turned OFF).
Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.


Powertrain Control Module Diagnostic Trouble Code (DTC) Index DTC Description Action to Take
P1460 Wide open throttle A/C primary circuit malfunction Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual ( OBDII , OBDII-Bi-Fuel LPG/CNG ).
P1464 A/C demand out of self-test range Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual ( OBDII , OBDII-Bi-Fuel LPG/CNG ).
P1469 Low A/C cycling period Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual ( OBDII , OBDII-Bi-Fuel LPG/CNG ).



Electronic Automatic Temperature Control (EATC) Module Diagnostic Trouble Code (DTC) Index DTC EATC (Hard) Self-Test Faults EATC (Intermittent) Run-Time Faults Description Action to Take
B1249 024 022/25 Blend door failure or short Go To Pinpoint Test A .
B1251 031 N/A A/C in-car temperature sensor (19D888) open circuit Go To Pinpoint Test B .
B1253 030 N/A A/C in-car temperature sensor (19D888) short to ground Go To Pinpoint Test B .
B1255 041 043 A/C ambient temperature (19E702) sensor open circuit Go To Pinpoint Test C .
B1257 040 042 A/C ambient temperature sensor (19E702) short to ground Go To Pinpoint Test C .
B1261 050 052 A/C solar radiation sensor (19E663) circuit short to ground Go To Pinpoint Test D .
U1073 N/A — Standard Corporate Protocol (SCP) invalid or missing data for engine coolant Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual ( OBDII , OBDII-Bi-Fuel LPG/CNG ).
U1341 N/A N/A Standard Corporate Protocol (SCP) invalid data for vehicle speed Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual ( OBDII , OBDII-Bi-Fuel LPG/CNG ).

[TSDuke]

DAMN thats some great information!!! Thank you, I'll give it a try, and see what it comes back with.

[GRY GHST]

TSDuke,

If you have an email address I can send you a word document that has all of this plus some troubleshooting info. It may just be your fan blower relay is blown.

[TSDuke]

That would be great.

mts77@earthlink.net