air conditioner compressor not turning on

2004 TOYOTA SIENNA

125,000 MILES • 3.3L • V6 • 2WD • AUTOMATIC

PACHYAUTO63

MEMBER
40 POSTS

I have replaced the compressor but it still will not kick on to pull in the Freon to make it blow cold. fuses look good. what could be causing the new compressor to not kick on like the old one did?

Apr 18, 2018 at 3:00 PM

MHPAUTOS

✓ASE Certified Mechanic
31,937 POSTS

It sounds like the compressor is defective but to be sure lets test for power at the compressor. This guide will show you how wit the AC wiring diagrams below so you can see how the system works. Also check all fuses

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (Below). Please let us know what happens.

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Professional Diagram for 2CarPros Members
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Apr 19, 2018 at 5:41 AM

PACHYAUTO63

MEMBER
40 POSTS

I have replaced the compressor, the resistor switch. all fuses and relays good. compressor holding 70-80 pressure but yet the compressor still will not kick on. cleaned out air flow and sensor replaced but still will not kick on. i am at out of ideas. please help.

Apr 24, 2018 at 5:13 PM (Merged)

ASEMASTER6371

✓ASE Certified Mechanic
52,796 POSTS

good evening

Did you check the fuses to be sure there is no blown fuse??

did you check for power at the compressor?? check the 10 amp heater fuse in the fuse block.

Roy

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Professional Diagram for 2CarPros Members
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Apr 24, 2018 at 5:13 PM (Merged)