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Replaced radiator fan temperature sensor and fans do not…

Customer Question
Replaced radiator fan temperature...

Replaced radiator fan temperature sensor and fans do not come on. 2001 Nissan Altima 2.5L. Turn on A/C and fans do not come on.

Mechanic's Assistant: Have you checked the connectors on the sensor itself? It's important that they not be loose or corroded.

Connectors are good, male and female. Disconnect connector at radiator fan temperature sensor and fans come on.

Mechanic's Assistant: Are you fixing your Altima yourself? What have you tried so far?

I replaced the radiator fan temperature sensor. Is there another sensor or the A/C to turn on the fans?

Submitted: 1 month ago.Category: Nissan
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Answered in 2 minutes by:
1/3/2018
Nissan Mechanic: Jake, Nissan Technician replied 1 month ago
Jake
Jake, Nissan Technician
Category: Nissan
Satisfied Customers: 4,210
Experience: Experienced collision repair technician, Pulaski Tech graduate and DSM hobbyist.
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Hey there, have you tried jumping the fans to make sure they both work? Did you check the fusie for them?
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Customer reply replied 1 month ago
When you disconnect the connector to the radiator fan temperature sensor, both fans come on.
Customer reply replied 1 month ago
Is there another sensor that turns on the radiator fans when the A/C is on?
Nissan Mechanic: Jake, Nissan Technician replied 1 month ago
When the a/c controller indicates the AC is on, then the BCM tells the ECM to turn on the condenser fan
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Nissan Mechanic: Jake, Nissan Technician replied 1 month ago
When you unplug this temperature sensor the fans automatically turn on as a failsafe
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Nissan Mechanic: Jake, Nissan Technician replied 1 month ago
You did make sure that the engine is actually warming up? Because if the thermostat fails open in the engine cannot warm-up and then the radiator fan won’t kick on
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Nissan Mechanic: Jake, Nissan Technician replied 1 month ago

Just checking in to see if you still need assistance?

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