2005 Nissan Altima Heater Blower

Tiny
NWALKER1
  • MEMBER
  • 2005 NISSAN ALTIMA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
I would like to know why the blower won't go off
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Thursday, March 18th, 2010 AT 8:25 PM

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Tiny
BLUELIGHTNIN6
  • EXPERT
Check for faulty blower motor relay
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Thursday, March 18th, 2010 AT 9:09 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi and thanks for using 2CarPros.com. I have to be honest, I have a feeling the switch itself is bad. What I have seen happen with these is the switch melts down internally allowing current to constantly run. Here is what I suggest. First, you need to access the blower motor unit. Here directions and a picture to help do that.

REMOVAL
Remove the glove box assembly. Refer to "Instrument Lower Cover RH and Glove Box".
Remove the ECM.
Disconnect the blower motor, intake door motor and blower motor resistor connector.
Remove the two bolts and one screw from the blower unit, then remove it.
INSTALLATION
Installation is in the reverse order of removal.

Next, you need to access the motor itself. Here are the directions and a picture for that.

BLOWER MOTOR

Removal and Installation
REMOVAL
Remove the blower unit. Refer to "Removal and Installation"
Release the eight tabs attaching blower motor to blower unit case and then remove it.
INSTALLATION
Installation is in the reverse order of removal.

Once you access the motor, disconnect the wiring to it and you will need to check for power to the motor. Here are directions and a video to help you use a test light.

https://youtu.be/Hlna_kUt7As

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Now that you have the wiring removed, prove the different wires for power using the test light. See if the power stays on at all times regardless of the switch position. If it does, chances are the switch is bad. If the power supply changes location, suspect a short to power.

I have attached a wiring schematic for your review. I hope it helps.

Take care and let me know if you identify the problem.

Joe
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Monday, May 21st, 2018 AT 5:59 PM

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