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

1999 NISSAN QUEST
150,000 MILES • 6 CYL • FWD • AUTOMATIC
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AMOS715
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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?

Aug 24, 2011 at 1:24 AM
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RASMATAZ
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Inspect and test the coolant temperature sensor and the fan relays, could also be the computer controlled circuit of the relay
Aug 24, 2011 at 1:28 AM
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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
Aug 24, 2011 at 1:35 AM
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RASMATAZ
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Swap it around the CTS in top of engine in intake manifold

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Aug 24, 2011 at 1:48 AM