Toyota - Highlander :: 2007 - AC Stopped Working / Getting Blinking Light
Jul 8, 2014
I have a 2007 Toyota Highlander (130K miles)Recently, the A/C stopped working.
What happens: 1) With the car running and A/C off, turn on A/C2) A/C starts blowing and begins to be cool3) About 10 seconds later, the LED on the A/C control knob starts to blink and stops blowing cool air
A few diagnosis items:
1) Between steps 1 and 2 above, putting a PSI gauge on the low side port shows about 40 psi, which I believe to be normal.
2) After step 3, the PSI gauge shows about 130 psi, which I think is way too high.
3) Replaced magnetic clutch relay with no improvement.
4) When step 3 occurs, a light grinding noise occurs but then stops.
5) No diagnosis codes on the OBD2 port.
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