After changing console, AC button lights up but doesn't power on AC

Hi guys new to this forum got no three tundra got it with 40,000 pushing 440,000 got the V6 great truck. Wish I could find another one same year with 100,000 miles but my question I’m probably one of the few that wore out by hazard Flasher button so I called Toyota clueless found one from a donor vehicle. They got T-bone bought the consul with a stereo switched hazards work great the light on the AC button works did work when I parked it a week prior not check it before I switch the consul, but I’m assuming that it still worked because it’s worked for the last 15 years nonstop , the light comes on with the new AC button in the new donor council don’t clutch high speed RPMs switch the consul back to the old one. I did not unplug the hazards or the cargo light. I left them plugged in the old council or the new council plugged the old council back in the light lights, but still no AC check the fuses Did the blog says check the relay pulled the relay out for the heater switched it with the headlight relay. I could hear something almost like bogged down the engine RPMs a little bit, but it doesn’t turn the clutch or the clutch turn by hand AC pump is free it’s not frozen , but I would on full blast inside. I’m dumbfounded any help would
be wonderful thank you.

 

That’s a hard one to get through. Is that Google Translate?

 

Yes, I’m sorry. I use Google translate. I’ll try to make it short and sweet. Replace my center consul. The lights come on on the AC button but it doesn’t power up my AC no more before I changed out the consul. The AC worked great I tried changing out the relay that doesn’t seem to have helped, wondering if what else to check besides the AC button I don’t know how to diagnose that because when you push it, the light does come on but it doesn’t activate the higher RPM or the clutch on the AC the prior switch did any help would be great

 

These parts are very specific to your year/model. Just because the replacement looks the same doesn't mean it will work.

 

So the AC doesn't work after reinstalling the original switch? Maybe the wiring harness connectors got mixed up? Don't know if they can be installed incorrectly or got damaged?

 

The center dash panel for these trucks vary from truck to truck. Specifically, people have found the climate control section is NOT compatible between all trucks. I think this is what you've now discovered, the hard way.

My recommendation is to transfer the HVAC controls from the old center dash to the new center dash, if it's possible.

 

Yes, the center consul came off of the same year same model tundra all the pins matched up on all the plugs and connectors. I just don’t know. I guess I’ll have to check the low amp fuses. I’m not too good at the electrical, but I’m almost thinking that the and I don’t know how it works, but it seems like the switch is getting power because the light comes on when you turn it on, but it’s like it’s not sending power to the relay And I don’t know how about going to check that almost strikes me like the switch goes through maybe a five amp or a 10 amp or some kind of fuse and then send that to the relay activate the relay which activates the AC unit but it’s strange because the fan works the heater works Doesn’t activate the AC compressor or the bump up the RPMs in the past when I hit the AC button and have the fan on you could hear the RPMs jump up a couple hundred RPMs I have a Scan Gage and it would be minimum like 150 to 250 RPMs but it doesn’t do anything except the light lights up on the push button thermostat works for cold fan speeds work hot cold vents work from Florida defrost all in between works. The lights on the council works light works hazard lights work Think it’s something stupid missing that I’m missing on Checkin like there might be a fuse or a circuit somewhere that doesn’t show up on the fuse box lid thank you guys for replying

 

Yes, this is also what others found. Even same model, same year, same options, no A/C working. Toyota changed a lot of things, especially in the crossover production years (2003-2004).

Swap the old panel back. Does A/C work? If yes, you know the A/C control panel is not compatible.

There was also a known problem with the A/C circuit board having issues in the earlier year trucks. There is a person in the US, I think in Texas, who repairs the circuit boards for a fee. It's common enough, this service exists. It's possible the donor truck had a faulty board.

 

Does the AC work with your old center bezel? If so, it's the new bezel. Good news is it sounds like all you really needed was the hazard flasher button. Just swap it over to your old bezel and you should be good to go.

 

+1
put in old center console. See if AC works. That's how you will diagnose those problems my guy.

a lot of changes between sr5, limited, month to month. You'll see plugs just hanging around and taped away in the truck if you dig deep enough.

 

Hi guys, thanks for the fast replies now I did switch the old bezel back and it doesn’t work. The light comes on but it doesn’t activate the AC anymore before I changed it so that’s what I’m thinking like someone mentioned maybe a broken wire or something. I’m thinking a few somewhere or if anyone knows which wires I’d trace from the switch to the relay or which terminals on the connectors and then maybe to the AC unit but it strikes me like the power to the good morning. The power to the switch is a separate power than what’s going to the relay.

 

You are plugging everything in when you’re testing it?

 

At this point. Since the original center is not working. Get Test light and start testing or get a multimeter and start probing.

orrrrr (like I always recommend) take your vehicle to an A/C specialist and let them look at it.

 

Maybe a related question....was your battery negative terminal cable disconnected when doing all this plugging/unplugging? If not, check your fuses/interruptores, you may have blown one when swapping between components.

 

That’s why I think there’s a few somewhere that maybe the new unit blew the circuit there’s something weird because when I parked it the AC worked and now it doesn’t when I put in a new controller so I guess probably something to do with the new console but I clueless to check and verify

 

Yes, when I checked the consoles, the one the new one I got from the donor everything was plugged in and that what I don’t understand is a light on the button works when you push it, but it’s not activating anything, but when I plugged in the old one I did not un Plug the hazards and the dome light off of the new consul to replug in the old one, but when I plugged everything else into the old one, the old one now doesn’t power up the AC. The light comes on, so I’m thinking the one Blue like someone says, but I’ve all fuse that I find under the panel and then under the hood , so I didn’t know if I was missing some somewhere else but I’ve only like the 10 and 15 A. I didn’t check any of the five and I’m wondering could it be a five amp that somehow use the 5 A to switch it to kick it into the relay or or anyone can tell me which wires like pull the relay out probe terminal in there versus the switch wire coming off the switch probe, but I agree about sending it to Texas connections with him anyway you can forward me an email or a number to get a hold of the guy in Texas I’m trying to verify the parts before I throw the parts cannon at it

 

There is another relay and/or fuse inside the engine bay, I'm quite certain. Did you check those also?

 

I did I pulled the one relay out that’s marked for the heater blower and I switched that with one of the headlight relays according to YouTube you can do it momentarily, but it still didn’t activate the AC compressor so I put it back in and put the original headlight one back to where it belonged

 

Are you 100% certain the A/C compressor is properly grounded? Here is the bracket and ground wire to check: https://www.tundras.com/threads/a-c-blinking-light-over-pressurized-bad-ground.110897/#post-2861791

 

Yes, I did read that article. Thank you. It worked when I parked it. I did not verify it before I change the consul because I was thinking was getting my hazard lights working and then that’s when I ran into the issue after changing the consul that everything worked except the AC compressor don’t kick on, I’ll double check that but I don’t think that’s connected to it because I would add issues beforehand if it was loose this is something happened with a fuse or a wire or something. Do you have any idea how I can test the wires from the connectors of the AC switch Back to the relay and the compressor which wires it would be I like one Comment said that the it’s all like circuitry there on those boards and I find it hard to believe for the cargo light that hazard light the AC switch and then the other ones likes the vent Takes there’s like five different connectors back there I believe and each one’s got a minimum like six wires or contacts to him so just strikes me like I don’t know if they’re running or how they’re wrong or I don’t know much about wiring knows about which terminals with Volto or Tesla or Any help would be appreciated thank you sorry about dragging for so long

 

Have an A/C specialist check your refrigerant and how much is in there.

 

Hi Lee, I have an '03 Tundra and had the exact same problem and just solved it. I purchased a replacement off ebay, and installed it. The A/C light comes on but it does not power up the compressor. It turned out that it was the incorrect part. It came off the same year, was the same 2WD and same V8 SR5. There is a part number on the bottom of the beige/yellow plastic housing. Mine was 84010-0C230-00. The one I purchased was different even though it looked EXACTLY the same. The wiring on the board is somehow different.

Check the two part numbers off the original and the replacement. If they are different, buy the same part number that was in the truck originally.

The reason why I changed it out was that the actual switch was failing. It would come on and off periodically (was not flashing). If I held the button in manually, A/C would work fine. You can bypass the switch by selecting the DEF or DEF/down selection and turning the blower on with the temp on cold. This should activate the A/C circuit.

Good luck! Love my truck but can't live without a/c.