Toyota Repair: 2004 Toyota Sienna A/C cold, then warm, then.., magnetic clutch, toyota sienna

Question
Hi,
I have a 2004 Sienna LE with approx. 82k miles. When I first turn on the AC it will be cold and run fine for about 10-15 minutes, then suddenly, as if I had turned it off, the air gets warmer and warmer. I have turned it off after this and 5 minutes later this repeats, first blowing cold air then warming up. I have also left it on after it started blowing warm air and on one occasion it started blowing cold again, but not for long. I had the AC system evacuated, recharged, and tested for leaks and all looked good. Could this be the clutch or possibly a relay switch or temperature sensor?
Thanks!
Scott

Answer
Toyota has issued a service bulletin that advises to replace the a/c magnetic clutch relay, it's located in the fuse/relay block under the hood near the battery: If the part number is 90987–02022, please replace the relay with the
countermeasured relay P/N 90987–02028/