Longtime follower around here but first time posting with my own issue that I didn’t see solved in previous posts via the search. Anyway, when I press the A/C button the display goes from blank to the snowflake with the line through it signifying no AC yet I can never get the actual AC on no matter which functions I try cycling through all of the climate controls. Anybody have any idea how/why I can get the AC to turn on?

 

If you don't have the icon with the line through it, that means the AC compressor should be engaged. You should hear a click of the compressor when toggling the compressor on. If you don't hear it clicking it could be your compresssor. If you do hear clicking, you could be out of freon or a blend door is preventing cold air from entering the cabin. Once you believe your compressor is working and invoked feel the low pressure line from the valve closest to the cabin back, if it's cold, it's a blend door. If it's warm you need freon or compressor work

 

Thanks for the reply. Just to clarify though, there is no icon and then a snowflake with the line through it, but shouldn’t there also be the snowflake when the AC is running?

 

Not an on a 2003, no. On later years they changed it because the line through the snowflake is tiny and hard to see. People were getting confused. I think on some 2004 and all 2005+ they removed the line and have just the snowflake which means AC on. On our 2003 no snowflake means AC on. I kinda of like it on my 2003. When the AC is on there is no liberal icon on my dash.

 

You need to open the hood and check to see if the AC clutch comes on. With the AC off start the engine. Observe the AC clutch..should be in the off position which means the front of the AC clutch is stationary. Turn on the AC system. If it works - you should hear a 'click' and the clutch will come on and rotate. If it does..and you have no AC in the cabin then its most likely the controller is not opening the actuator door to allow AC to flow in.
If the AC clutch stays stationary its more than likely your R134 is low so the system won't permit the clutch to engage. The way to find out is to jumper the clutch manually to see if it gets a little cooler. The best method is to put some AC Gauges and see the pressures when you do that for accurate diagnosis. My suggestion is to take to a AC shop for a diagnosis if you are not familiar with AC system diagnosis and operation.

 

Thank you, you guys are awesome!