My 2003 Toyota Camry ac light is flashes . I tried to add r134 however the compressor will not kick in . Is there a way to by pass the pressure switch like the old days ? If not what can I do ? I checked relays/fuses. tried to add r134 but compressor would not kick in .
These systems aren’t like the good ole days, but the concept is still the same.
I have encountered the same problem you’re having countless times. And most of the time (90%), the problem lies within the M/C Clutch relay located under the fuse box under the hood. The relay shorts out and shuts down the A/C. A newly designed relay is offered from Toyota if the part number falls within the failed one. I have attached a file for your review.
Service Bulletin on this issue