2006 Honda Odyssey minivan air conditioner failed.
I checked the Freon pressure which was 92 psi, which is good. I noticed the AC compressor pump’s clutch was not engaging. Checked 3 related fuses all ok. In the fuse / relay box on the passenger side of the engine compartment by the firewall I swapped R1 Radiator Fan Relay with R4 the air compressor clutch relay and the air conditioner started working. I ordered two new relays from Amazon that took 3 days to get and replace the bad relay. ($10 for two relays.)
I cut off the case of the bad relay and it appears to have worn out contacts.
Unfortunately, I purchased a can of Freon with a hose attached along with an attached pressure gauge which, I suspect, is what Washington state requires. However, the Freon was not low so the Freon was not used.
Great help watching YouTube videos. I took the picture below from a helpful video.
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Contacts in the center of the relay are rough and dirty.
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