A/C/heater blower fan runs all the time. A/C works when control knob is engaged. Replaced center control unit but blower fan runs all the time.
Sep 4, 2017 at 5:02 PM
Blower fan will not turn off
2008 NISSAN TITAN
JOE WHITEHURST
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Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
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It sounds like you have a blower motor relay that is stuck on, try to remove it to see if the blower stops.
Here are some diagrams (below) and a guide that will help us fix the problem. The relay is #107 in the last fuse box diagram
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
I included the wiring diagrams for both manual and auto system is case we need to go deeper.
Please let us know what happens so it will help others.
Cheers, Ken
Here are some diagrams (below) and a guide that will help us fix the problem. The relay is #107 in the last fuse box diagram
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
I included the wiring diagrams for both manual and auto system is case we need to go deeper.
Please let us know what happens so it will help others.
Cheers, Ken
Images (Click to enlarge)
Sep 5, 2017 at 4:16 PM
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