How is the radiator fan connected to the coolant temperature sensor?

Tiny
LIBERSTY
  • MEMBER
  • 1997 NISSAN PULSAR
  • 297,657 MILES
Coolant temperature sensor is not working.
Tuesday, July 22nd, 2025 AT 5:40 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
So the temperature sensor feeds information to the PCM which turns the fans on, so are the fans not working? What makes you say the sensor is not working, did you get a trouble code?
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Wednesday, July 23rd, 2025 AT 9:57 AM
Tiny
LIBERSTY
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  • 2 POSTS
No I test sensor with multimeter, and it gives 2.63 cold water and 0.31 hot.
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Wednesday, July 23rd, 2025 AT 1:17 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
The sensor is working properly based on resistance readings.
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Wednesday, July 23rd, 2025 AT 4:40 PM

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