Air con & blower

Air con & blower

Postby b.huntingford on Wed Dec 09, 2015 11:04 pm

Hello,

I noticed my truck wouldn't clear the inside of the screen with the air-con the other day, so I clicked the fan up to '3' and the air con light went out! After looking into it I have; Air-con light green with speeds 1 & 2 but no blowing at all, no air-con light with speeds 3 & 4 but the blower does work on these two speeds.
I'm thinking its probably the blower fan speed controller? Has anybody had this before?
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Re: Air con & blower

Postby RHKTriton on Thu Dec 10, 2015 7:09 am

Interesting one.

Have you checked the basics?

1. Check all fuses
2. Pull out fan and check for operation
3. Check resistor pack on fan - might be an open circuit in this somewhere.

The AC is usually interlocked with the fan ( no point running without fan).

Other areas could be switch or control module. Really need a wiring diagram from this point.
Don't let the b'strds get you down!!
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Re: Air con & blower

Postby beesboer on Sun Nov 27, 2016 5:47 pm

Hi,

Did you ever manage to find the cause of the problem? I have an almost identical problem except that the fan only runs on 4 but then the AC light goes out (so no fan on 1, 2 or 3 but the AC light comes on).
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Re: Air con & blower

Postby kitemanwest aussie on Tue Nov 29, 2016 7:24 pm

resistor is faulty. mounted beside the blower motor. simple replacement job...2 minutes
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Re: Air con & blower

Postby beesboer on Fri Dec 09, 2016 9:53 pm

Hi kitemanwest,

Could you please direct me to the resistor pack. Took the cubby out and still can no see it.

Thanks.
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Re: Air con & blower

Postby beesboer on Sat Dec 17, 2016 12:35 am

Bump.

Can somebody direct me to the resistor pack of the fan?
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Fan speed control resistor

Postby Eddylong1976 on Wed Jun 27, 2018 6:03 am

I have a 2012 MN triton GXL-r the fan has stopped working completely I have checked all the fuses and they are fine. I’ve been told it may be the fan speed control resistor. Is this a common problem? Is this an easy fix? Fan does not work in any speed? Is there any other tests I should do ? Any help would be awesome as it is -3 degrees here every morning. Cheers in advance
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Re: Fan speed control resistor

Postby RHKTriton on Wed Jun 27, 2018 8:28 am

Have you removed the fan?

Might be crud jamming it. (If you don't have a cabin filter in place)

Need to check continuity of fan - might have an open circuit. I've had one of the brushes stuck on a previous vehicle and wasn't pushing on the commutator anymore.

The resistor module can go faulty - so also probably needs to come out for a look.

The plug going into the resistor should get 12v on the respective wires activated in each speed position.
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MN 2013 Cabin blower fan work intermittently

Postby macca1967 on Sat Mar 09, 2019 6:57 pm

Blower fan does not work sometimes when climate control fan knob is turned on. Checked & have power to fan motor. Have checked fuses. Can anyone tell me where the blower fan resistor is located.
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Re: Air con & blower

Postby NowForThe5th on Sat Mar 09, 2019 9:02 pm

I've merged three threads on this topic and copied the drawing below from yet another to save you the trouble of searching for it yourself.

Blower motor and fan speed control resistor. Access from driver's side.

blower.jpg
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Chris

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Re: Air con & blower

Postby Kieran1991 on Mon Apr 29, 2019 5:40 pm

I had the same problem. Fan speed control resister had a connection heat up the solder and pop up off the circuit board thing. I just re soldered it and it's been five ever since.
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Re: Air con & blower

Postby RHKTriton on Tue Apr 30, 2019 7:42 am

Always worth a sticky, can save heaps.

Just spent heaps on a new washine machine as old one stopped. A couple of weeks later, a $10 set of brushes had the old beast running like new.
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