Mechanics

- RADIATOR FAN H1 & H2 NOT COMING ON

1999 Nissan Quest • 6 cylinder 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?



Avatar
Amos715
August 24, 2011.



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


Rasmataz
Aug 24, 2011.
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


Tiny
Amos715
Aug 24, 2011.
Swap it around the CTS in top of engine in intake manifold


Rasmataz
Aug 24, 2011.