A/C Relay Location

[BAMF]

I was inquiring about the fan inside the truck, it should be on high and keep the windows down.
Usually the condenser fans turns on low any time the AC is running. Your sorta running blind without knowing at least the low side pressure, both would be better. I think you can use AlfaOBD to see if the fan and/or compressor is commanded on.
It wasn't till almost the '17 model year that trucks had the cabin air filter installed from the factory. Sometime during the '16 model year the filter door was being installed but no filter (yes a bunch of people went WTF?)

Yes sorry. I had the fan in the truck on high. I just drive to town and back about 60 miles and the a/c never kicked on.

My compressor fan is not coming on either.... I didn't even realize it was there.... Its hard to see that far past the shroud

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[BAMF]

I was inquiring about the fan inside the truck, it should be on high and keep the windows down.
Usually the condenser fans turns on low any time the AC is running. Your sorta running blind without knowing at least the low side pressure, both would be better. I think you can use AlfaOBD to see if the fan and/or compressor is commanded on.
It wasn't till almost the '17 model year that trucks had the cabin air filter installed from the factory. Sometime during the '16 model year the filter door was being installed but no filter (yes a bunch of people went WTF?)

The condenser fan was not working. I pulled the relay for that and swapped it with the air suspension relay (that my truck isn't equipped with). The fan came on and the compressor clutch engaged..... Hopefully that has been the problem all along. I wonder if the compressor uses the same relay as the fan.


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[Burla]

Thanks, Burla.

Yes the clutch is 62 but that's just a 10 amp fuse not a relay. I wonder where that additional fuse block is.... It has HVAC but that looks like a fuse too.
If it was intermittent it shouldn't be a fuse I wouldn't think.
I just don't get how every other vehicle I have looked at except this one has a relay with the rest of the fuses.

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The condenser fan was not working. I pulled the relay for that and swapped it with the air suspension relay (that my truck isn't equipped with). The fan came on and the compressor clutch engaged..... Hopefully that has been the problem all along. I wonder if the compressor uses the same relay as the fan.


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cool, so you are up and working. Kinda surprised that did, I guess you were right.

 

[BAMF]

cool, so you are up and working. Kinda surprised that did, I guess you were right.

It didn't work.... Took it for a test ride last night..... A/C stopped working after about a 15 mins drive.

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[Wild one]

It didn't work.... Took it for a test ride last night..... A/C stopped working after about a 15 mins drive.

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I'm guessing you can rule out the relay,why don't you take it somewhere where they can hook up to the new A/C fittings and check the charge.I'm no A/C expert but to me it sounds like it's acting as if it's low on Freon,and the trucks are famous for leaking Freon from the accumulator o-ring

 

[Burla]

It didn't work.... Took it for a test ride last night..... A/C stopped working after about a 15 mins drive.

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well ****, junkyard compressor, condenser whatever they call that dohicky.?

 

[Burla]

That relay actually sends current through the TIPM board as well?

 

[BAMF]

I'm guessing you can rule out the relay,why don't you take it somewhere where they can hook up to the new A/C fittings and check the charge.I'm no A/C expert but to me it sounds like it's acting as if it's low on Freon,and the trucks are famous for leaking Freon from the accumulator o-ring

I was starting to think the same thing.... I got a can of freon. The next time my compressor kicks on I will check the pressure.

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[BAMF]

Just for a little closure if anyone has this problem in the future. It ended up being my wiring harness going to the compressor was jacked up, that's why it would work sporadically.... Thank you Louisiana roads!

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[mndavec]

Did anyone find the relay? In my 2017 the A/C seems to be stuck on. Is it part of a control board and not a replaceable relay?

 

[04fxdwgi]

That is correct. Don't see a relay on this list of fuses and relays.