Release the charge a bit at a time as the high head pressure switch is stopping the unit from working.. Best have it done in an ac shop.
SOURCE: 2003 Dodge Ram 2500- window master switch
Alot of times these switches get water from the rain coming in intoo them causing the contacts to short or not make contact at all, unfortunately they are not servicable but you may want to try spraying some electrical cleaner into the switch working the button at the same time this may help
SOURCE: A/C not working on my 06 Dodge Ram 2500. How do I
I have a 2006 Dodge Ram sometime the ac blowes hot and sometimes it freeze out of the cab please help me
SOURCE: 2006 Dodge Ram 2500 diesel truck----need inside fuse box diagram
If you are looking for the fuse box diagrams or any other diagrams for your Ram, check promanuals.net for a factory service manual for around 20 bucks or so. It's an invaluable tool for my Ram 2500.
SOURCE: problem with hid on 2008 dodge ram 2500
Not too much amperage. HID lights use less amps. Duh. The circuit is showing a failure in the HID kit from not enough amps so it turns off. You need to add a resistor.
SOURCE: 2006 dodge ram 2500 a/c fuse rely
The AC relay is located in the under hood fuse box. The cover should have a legend for location. Its one of the bigger black ones. You can rotate it with the horn or ABS one to see if its the problem. You may have a small fuse also in that box for it. If this doesn't solve the problem then you either have a leak or a computer problem. What a shop will do is try with a bidirectional data scanner turn the AC on. If they can't get it to turn on with a scanner then you most likely have a failed PCM if they verified you do not have low pressure or a relay or wiring or switch issue.
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