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Front blower motor for heat/air not turning on?

Tiny
RYAN EHRLICH
  • MEMBER
  • 2013 DODGE DURANGO
  • 3.5L
  • V6
  • 4WD
  • AUTOMATIC
  • 70,000 MILES
My wife notified me she didn't have any heat in the car! So when I go home from work I checked to see what she was talking about and the front blower doesn't do anything. You can hear the blend doors open and close, no blower motor at all. Relay, motor, resister. I have no idea. It worked perfectly fine the day before. And the rear blower works fine it just blows cold air and that's it. More worried about the front blower than anything. Please help!
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Thursday, October 3rd, 2019 AT 10:54 AM

43 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Hello,

Lets check fuse # J15 to see if its okay if so it sounds like the blower motor or blower motor relay has gone out. To be sure here are three guides to help us see whats going on and the blower motor wiring diagrams below so you can see how the system works with the location of the blower motor and fuse with relay as well (below):
https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Friday, October 4th, 2019 AT 2:17 PM
Tiny
RYAN EHRLICH
  • MEMBER
  • 2 POSTS
I did figure it out last night! I went through and metered relay to make sure door was opening and closing by ohming everything out along with fuse! Everything ohmed out good! When I went to put the fuse panel cover back on I still had the key on and I heard the blower kick in. So I pulled the actual panel out and found loose and corroded wiring. Cleaned up and all good now! Thanks for the response!
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Friday, October 4th, 2019 AT 2:26 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Hi,

If the blower motor doesn't work at all then this could be the motor, wiring (loose or corroded), or relay, or a module. I highlighted where we need to take voltage readings when the blower motor is turned on. This will tell us what the issue could be. Let me know if you have questions but unfortunately your vehicle doesn't have just a resistor like older vehicles. Your blower motor is controlled by a power supply and then a control module. The blower motor control module gets a power supply from the TIPM and the HVAC control module tells the blower module when and at what speed to turn on.

Let me know if you have questions. Thanks
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Friday, October 4th, 2019 AT 2:40 PM
Tiny
MATRIX2868
  • MEMBER
  • 8 POSTS
  • 2005 DODGE DURANGO
  • 4.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
Duel Air system. The air in the back of the truck works fine but there is no air coming out the vents in the front of the truck. When its standing still and I cannot hear the blower motor. I do feel a little cool air from the front vents when the truck is actually down the road 'but still can not hear the blower motor 'when the truck stops so do the front air. But its running and cool in the back of the truck.
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Welcome to 2CarPros.

It sounds like either there is no power to the front blower motor or the motor itself failed. Does it run if you put it on high speed?

Lets start with the basics. I need you to check two fuses in the under hood fuse box. See the attached wiring schematic for fuse numbers.

Here are a few links you may find helpful:

https://www.2carpros.com/articles/how-a-car-fuse-works

https://www.2carpros.com/articles/how-to-check-a-car-fuse

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

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

Check there first and let me know what you find. Also, let me know if it runs on any speed.

Joe
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
MATRIX2868
  • MEMBER
  • 8 POSTS
  • 2005 DODGE DURANGO
  • 4.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
I do apologize for the typos in the question I asked. This is a redo of the same question.

The vehicle listed above has duel air system. The problem is the air in the front not working properly. The back of the truck works fine. But there is no air coming out the vents in the front of the truck when its standing still. There is no sound from the blower Motor. There is a little cool air from the front vents when the truck is actually moving down the road 'but still can not hear the blower motor. But as soon as the truck stops' so do the front air. But its running fine in the back of the truck.
Any ideas what this could be?
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Hi,

Sounds like the blower motor is not running at all. The small amount of air coming out is most likely because the system allows air in and is sped up by the blower fan so that is just the natural amount of air coming into the system.

We need to measure power at the blower motor to find out if we have an issue with the motor or the power getting to it. If there is power there then the motor has failed. If no power then it could be a module issue or maybe a relay issue which is part of the Power Distribution Center (PDC).

Here is a guide that shows how to test wiring. Unfortunately, we need to do some testing because we don't want to just replace parts because of the number of different things that it could be.

Here is a guide that talks about how to test wiring:

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find at the blower motor and we can go from there.
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
PETE663
  • MEMBER
  • 2 POSTS
  • 2004 DODGE DURANGO
  • V8
  • AWD
  • AUTOMATIC
  • 120,000 MILES
Front heater not working rear working fine all fuses good. I'm not getting any air at all?
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
Hello,

There is a rear blower motor relay that needs to be checked and the blower motor here are two guides that will help us fix the problem with the blower motor wiring diagrams so you can see how it work with eh relay locations as well.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Check out the diagrams (Below). Please run this test and get back to us.

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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
PETE663
  • MEMBER
  • 2 POSTS
Thank you so much for your help I had to replace the rear blower motor to fix the problem.
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
No problem. If you need any more assistance just ask.
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
A.ARON
  • MEMBER
  • 4 POSTS
I am having the same problem in my 2001 dodge durango. The front blower motor is not working but the rear works just fine. The front doesn't work on any speeds. Hooked up the blower motor to 12v battery and it fired right up. Replaced the resistor and the pigtail harness still nothing. All the fuses are good and no melting on any of the relays. What could I possibly try next?
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Hello,

Can you test for power on the dark blue wire going to the power transistor? Test is with the key on here is a guide to help. Check out the wiring diagrams in the second post to see how they system works in this thread.

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

Please run down this guide and report back.
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
A.ARON
  • MEMBER
  • 4 POSTS
I will have to buy that test light unfortunately I will not be able to do it until tomorrow. Where would be the relay for the front blower? When looking on the fuse box diagram it only has listed for the rear blower motor. I do not believe I am getting power but will know for sure tomorrow.
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
The relay is in the fuse panel in the cab. Here is a guide to help check it and the location of the relay below:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (below). Please let us know what happens.
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
A.ARON
  • MEMBER
  • 4 POSTS
There is no power to the dark blue wire.
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
A.ARON
  • MEMBER
  • 4 POSTS
That diagram does not match the fuse panel in my 2001 Dodge Durango
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Sorry that was for a 2004 on a 2001 there is no front blower relay only a rear here are the wiring diagrams so you can see how the system works with a guide on how to check for power so you can tell where the problem is. Key on switch on you should have power at the dark green wire

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

and

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Check out the diagrams (Below). Please let us know what you find.
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Thursday, August 6th, 2020 AT 10:46 AM (Merged)
Tiny
JOEY WARD
  • MEMBER
  • 3 POSTS
  • 2004 DODGE DURANGO
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 158,000 MILES
My SUV has no heat. The fan does not work. I can feel minimal heat so I know it heats but no fan. Cannot find any diagrams to check fuses.
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Thursday, August 6th, 2020 AT 10:47 AM (Merged)
Tiny
JOHNNY G.JR
  • MECHANIC
  • 320 POSTS
Check for twelve volts at heater connector, There is a relay in engine compartment for A/C. There is also a resistor on heater box that needs to be checked.
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Thursday, August 6th, 2020 AT 10:47 AM (Merged)

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