1999 NISSAN QUEST - RADIATOR FAN H1 & H2 NOT COMING ON

  • Tiny
  • amos715
  • 1999 Nissan Quest
  • 6 CYL
  • FWD
  • automatic
  • 150,000 miles

1999 Nissan Quest - Radiator Fan H1 & H2 Not Coming On

it started with old radiator fan motor burning up. The 20amp fuse blew as well.

replaced fan assembly (new shroud, fan blades, motor) and fuse.

now the A/C doesn't get cold, and radiator fan does not turn on for what I assume is suppose to be the H1 H2. (The Lo comes on when I start the van cold and turn the A/C on)

any ideas?

Wednesday, August 24th, 2011 AT 1:24 AM

3 Answers

  • Tiny
  • rasmataz
  • Member

Inspect and test the coolant temperature sensor and the fan relays, could also be the computer controlled circuit of the relay

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Wednesday, August 24th, 2011 AT 1:28 AM
  • Tiny
  • amos715
  • Member

Awesome, is there a fsm picture that shows where the coolant temp sensor should be.

I found the fan relays, but I have no idea on how to test them, can I just take the Lo out with pliers and plug it into the H1?

Thanks

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Wednesday, August 24th, 2011 AT 1:35 AM
  • Tiny
  • rasmataz
  • Member

Swap it around the CTS in top of engine in intake manifold

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Wednesday, August 24th, 2011 AT 1:48 AM

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