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Front Interior Fan only works in Position 1 or 2

  #1  
Old 07-30-2006, 02:38 PM
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Join Date: Jul 2006
Posts: 4
Default Front Interior Fan only works in Position 1 or 2

The front interior fan control in my 2000 MPV is only working in position 1 or 2. If turned to 3 or 4 the fan stops and the Air Conditioning light goes out. This started with the fan only working in positions 1 and 3, which was tolerable, but now in mid summer it cannot keep up with the interior heat. Anyone have this problem?
 
  #2  
Old 07-30-2006, 03:32 PM
Join Date: Jul 2006
Posts: 71
Default RE: Front Interior Fan only works in Position 1 or 2

I had it once in a Ford Escort (idea 1). Mazda is related to Ford so maybe the same thing...
If you run your fan a lot, the plugs on the back of the control unit melt and stop working right.
Or
For you it sounds more like a switch problem since you are able to make it work in some positions (especially since the postions changed). You could ask the parts department at Mazda how much you have to replace, but you will probably have to replace the whole control unit or if the fan switch is separate, the fan switch.

Sorry I only give general info I don't own a MPV.

I would say pull out the fan switch an visually inspect it to see if anything looks burnt or melted.
 
  #3  
Old 07-30-2006, 03:56 PM
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Join Date: Jul 2006
Posts: 4
Default RE: Front Interior Fan only works in Position 1 or 2

Dan,

Thanks for the post. I was actually out working on it today, but with the heatwave here and sweat pouring I decided to save this for another day. Will spend the time trying to figure out where this stuff is and the easiest way to get to it.

W
 
  #4  
Old 08-04-2006, 07:14 PM
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Join Date: Jul 2005
Posts: 2,747
Default RE: Front Interior Fan only works in Position 1 or 2

Would suspect the front heater blower resistor unit to be at fault but could also be the fan switch itself. Not very difficult to determine which it is. You will need to gain access to the resistor unit. It is located behind the glovebox in the top of the short air duct between the heater blower motor housing and A/C evaporator housing. See drawing below.


[IMG]local://upfiles/1377/C14A5A21E8944F20A6A71386F8717992.gif[/IMG]

To gain access to the resistor you will want to remove the glove box as shown below.
[IMG]local://upfiles/1377/CCFD92D521C3433AAF776BB9B170F213.gif[/IMG]
1. Bend the stoppers inward, then remove by continuing to rotate outward.

[IMG]local://upfiles/1377/AA56E16AD24441BB84AC10C3C2FF3523.gif[/IMG]
2. Pull the glove compartment toward you while pushing it downward (1), then remove clip A.
3. Slide the glove compartment toward driver"s side door (2).

Now that you can see the blower resistor it should have four larger gauge wires going to it in the connector. Two of them are Blue w/ Yellow Stripe, one is Blue w/ Red stripe, and last is solid Blue in color. Find a good metal ground point under there and clip on a jumper wire. As each wire is grounded one at a time with connector still plugged into resistor, the front fan should come on at each of the four speeds. Diagram is not specific on which Blue/Yellow wire is which but one is for lowest speed and one is for highest speed. Solid Blue is for speed #2 and Blue/Red is for speed #3. If the fan still only works on 1 and 2 then the resistor is burned up and needs replaced. If all of the fan speeds work as they should now then the fan switch if faulty.
 
  #5  
Old 08-04-2006, 07:54 PM
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Join Date: Jul 2006
Posts: 4
Default RE: Front Interior Fan only works in Position 1 or 2

Thank you. Sounds very logical and good troubleshooting tips. With the weekend in sight sounds like a good project.

W
 
  #6  
Old 08-11-2006, 09:39 PM
Thread Starter
Join Date: Jul 2006
Posts: 4
Default RE: Front Interior Fan only works in Position 1 or 2

Continuing the saga of the blower fan resistor. Checked the part as you described and it was bad. Checked local parts stores and none carry that I could find, so went to the dealer. Got a call today and the part was in, only it turned out to be for the rear blower. I returned it and carried in the correct part only to find out that the front blower resistor can only be ordered from Mazda with part of the ductwork. Quoted $107.00...for a resistor!!!! Dealer says when I get the "assembly" all I need to do is take the resistor off and install in my van. I walked out in disgust and partly for the principal of having to order an assembly to get an easily removed part..just two phillips screws hold it in place. I know I will probably end up having to go back and order but this just seems wrong.

Anyone have any advice as to where to get just the resistor part? Bad enough that for the rear, which looks similar, just a little smaller and has a different connector it is $60.

Thanks,

W
 
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