Hi,

In my Chrysler Pacifica 2005 A/C lights are blinking and A/C goes on and off (and so on), I believe it lost calibration, anyone can help me and tell me how to put in 'recalibration' or 'diagnostic' mode ?

Thanks,

Pawel

 

MANUAL TEMPERATURE CONTROL The blower fan speed must be set to High and the evaporator temperature sensor must be greater than 13° C (55° F) or the test will fail immediately. The test is activated by depressing the A/C and PWR buttons simultaneously and holding them depressed for no less than five seconds. The A/C and PWR button LEDs will blink on and off until the test is complete. If the LEDs stop blinking before two minutes, then the cool down test has been completed successfully. If the two minutes expire without the expansion valve temperature reaching -6° C (20° F) less than the outside air temperature, then the cool down test has been failed and further A/C system diagnosis is required. If the test is failed, the LEDs will continue to blink until the vehicle has been driven for greater than 13 km (8 miles).

 

Hi,

Thanks for quick reply, the issue is that I can't set anything, A/C lights are blinking (LCD screen also), I cannot even shutdown it (maybe removing the a/c fuse would help). Pushing buttons doesn't help anything, it doesn't respond. Any idea ?

Thanks for your help,

Pawel

 

o u have an auto temp control sorry yeah u will haft to take it to a dealer and have them run a code scan the HVAC control head. I would say u have a bad one, but thats with out seeing the codes. The fuse for the control head is fuse 50 15amp give it a try and see what it does. Under the hood.