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> A/c Blower/fan Switch Is Not Working - Please Help, A/C blower/fan switch
emarroqu
post Aug 25 2008, 02:30 PM
Post #21


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Location: MN
Drives: '98 Diamante
QUOTE(KiT TeUnG 2549 @ Jul 29 2008, 10:44 PM)
There is a "power ground" or logic ground per say, this aids in doing away with the blower resister on these type of systems with the digital climate control.

The blower is nominally in good working order is set to work between certain low power voltages. When and if the blower starts to get bad it will require alot more voltage than normally to operate  it. This is why it would not work on the car , but would when testing it yurself.

When supplied a good bit of ground or voltage away frum the regulated set up it will work . But its made to work within a low voltage setup.
[right][snapback]188068[/snapback][/right]


Hi Kit,

I have a '98 Diamante. When I got the car, the fan worked fine, but now it only works on the high setting. Then after that, the blower motor stopped working, so I replaced it. The fan still only works on high. I am assuming that my car has this logic/power ground because I do not see a resistor. How do I fix this unit so the fan works on all settings?
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KiT TeUnG 2549
post Aug 26 2008, 12:41 AM
Post #22


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Location: Chiang Mai , Chiang Mai ,TH
Drives: 1997 Mitsubishi Diamante VR-S SUPER INVECS II , 1990 Mitsubishi Galant VR4 , 2006 Mitsubishi Triton PLUS 3.5 DOCH
Not many models outside asian countries have the power/logic ground system . But anything is possible , i am including a picture of the location of the blower resistor/power resistor for the blower motor. It is on the upper front of the blower case.

The image is for asian and australlian RHD vehicles but it will give yu a good idea of where to look on yurs.
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Attached File  tran_sistor.JPG ( 43.5K ) Number of downloads: 36
 
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techman
post Sep 2 2008, 09:51 PM
Post #23


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Drives: 2001 Diamate LS
When you say you replaced the transitor did you replace the whole module or did you replace the transistor that is connected to the heat sink?
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imchief
post Oct 16 2008, 12:26 PM
Post #24


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Location: USA, Florida
Drives: 1999 Mitsubishi Diamante LS
I replaced the entire module. The transister are inside and there is no way to get to them with out tearing up the housing. the whole module was only $53 US at the dealership.
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