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

Tiny
AMOS715
  • MEMBER
  • 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?

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

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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
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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
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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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