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2002 Nissan Frontier XE, the A/C is intermittantly working,

Customer Question
when I first get in...
2002 Nissan Frontier XE, the A/C is intermittantly working, when I first get in & drive it works -> I stop -> then back in, it stops working (blower works no cold air) I changed the Thermostat (3 wire, orange plastic coated, inside cooler box, behind glove box) still does not work. Under the hood I remove the blue relay out of the fuse box & use a bypass wire to jump or bypass the relay. The compressor switches on A/C Works it blows cold air. My question what piece of electronics, or series of components does the thermostat connect to that works in conjunction with the relay -> which controls the compressor & turns it on & off?
Submitted: 1 year ago.Category: Nissan
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Answered in 39 minutes by:
6/14/2016
Nissan Mechanic: K. Wiggins, ASE Certified Technician replied 1 year ago
K. Wiggins
K. Wiggins, ASE Certified Technician
Category: Nissan
Satisfied Customers: 3,032
Experience: ASE Certified Technician, Associates Degree in Automotive Technology, 15+ years in the trade
Verified

Check the dual pressure switch as if it is faulty the compressor will not turn on. I'll post the info below.

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Customer reply replied 1 year ago
Ok, I'll get a multi-meter & dig into it. Still need to know what piece of electronics controlls the thermostat I think I might have smoked something when testing & replacing the thermostat - some burnt resistor smell comming from the dash glove box area. Any idea what that could be? Middle wire on the 3 prong white connector the thermostat plugs into, I think I accidently shorted it, & then burnt/smoke smell followed? I can snap a pic of the connector & wire I'm refering to & send it, let me no if you need a pic of it?
Thx
Nissan Mechanic: K. Wiggins, ASE Certified Technician replied 1 year ago

Is it manual or auto climate control? Need to know to pull the diagram ofr the thermister wiring

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Nissan Mechanic: K. Wiggins, ASE Certified Technician replied 1 year ago

Thanks, ***** ***** likely it fried the amplifier in the control head. The blue wire goes to that. You can probably find a control head on eBay or HERE I'll post the wiring diagram below.

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Nissan Mechanic: K. Wiggins, ASE Certified Technician replied 1 year ago

Hello, I was just wanting to follow up and see how things went.

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K. Wiggins
K. Wiggins
K. Wiggins, ASE Certified Technician
Category: Nissan
Satisfied Customers: 3,032
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Experience: ASE Certified Technician, Associates Degree in Automotive Technology, 15+ years in the trade

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