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Discussion Starter #1
Looking for some idea's to check why my AC is pushing nice warm air.
1. Tried to add Freon, but gaige was past the green fill line.
2. Took a continuity tester and hit every fuse I could find.
3. Checked belt and pulley, Belt did not show any signs of wear or damage
4. .....

Any suggestions of next steps? Much appreciated!!
 

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2015 Pathfinder SL - Tech 4WD
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On a simple AC system I would next bypass the compressor's magnet to see if the magnet and compressor physically work and if it cools or not. From that point I'd then bypass the high and low pressure switches to see if the amount of refrigerant is correct. If all that checked out then it would be around the controls (thermostat, relays, etc).
But this is not a simple system and everything is full of connectors, modules and electronics which exceed my knowledge.
 

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Check if the compressor clutch engages when the ac is on.
Also, check the cooling fans, they should remain on while the ac is working.
Next step, is to check system with manifold gauges.


Sent from my SM-G970U using Tapatalk
 

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Discussion Starter #4
Check if the compressor clutch engages when the ac is on.
Also, check the cooling fans, they should remain on while the ac is working.
Next step, is to check system with manifold gauges.


Sent from my SM-G970U using Tapatalk
Thank You!
 

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Discussion Starter #5
On a simple AC system I would next bypass the compressor's magnet to see if the magnet and compressor physically work and if it cools or not. From that point I'd then bypass the high and low pressure switches to see if the amount of refrigerant is correct. If all that checked out then it would be around the controls (thermostat, relays, etc).
But this is not a simple system and everything is full of connectors, modules and electronics which exceed my knowledge.
Thanks so much for your help!
 

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2019 Nissan Pathfinder SV 4x4
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536 Posts
Good info Dan and great find! What brand clutch did you buy? P/N and cost if you don't mind?
 
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