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Old 07-06-2008, 08:34 PM   #1
C_Wood
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Member#: 102234
Join Date: Dec 2005
Chapter/Region: MAIC
Location: Winchester
Vehicle:
03 WRX
WRB 16g

Default Number 2 on my heat and AC won't work

Well I have done some looking around for about an hour now and haven't really found any solid threads on this.

My A/C and heat work fine on 1, 3, and 4 but when I put it on 2 it just dies. Put it back to 1, 3, or 4 and it still works fine. I took off the glove box and did some looking around for the blower motor speed resistor (since the other threads I found said to do so). Am I heading in the right direction with this? Anyone else have this issue?

This is what I found so far.
http://forums.nasioc.com/forums/show...Blower+Problem


Oh and this is in a 03 WRX

Thanks

-Charlie
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Old 07-07-2008, 10:59 AM   #2
Cougar4
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Join Date: Jan 2004
Location: Anchorage, AK
Vehicle:
2001 LL Bean Outback
Winestone

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The problem is either the with the resistor for speed 2 (most likely), the switch position, or the wiring in between for that position. By following the wires back from the motor you should be able to find the resistors.
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Old 07-07-2008, 04:14 PM   #3
ProdriveDreams
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'02 WRB VF-39'd WRX
W/06 STi Drivetrain swap

Default

EDIT: oops! my bad (see correct info below)

Last edited by ProdriveDreams; 07-07-2008 at 04:40 PM.
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Old 07-07-2008, 04:28 PM   #4
Mulder
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02 WRX
15 WRX/05 GTO

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Actually the resistor assembly is located in the blower housing down under the dash, this is to keep the resistors in the airstream for cooling since they get hot. If you pull back the mats and carpet up front on the passenger side you will see two connectors going to the bottom of the HVAC housing, one is for the fan motor and the other is for the resistor assy. If you unplug the resistor connector and remove it (two screws), you can inspect it visually and test it with an ohmeter.
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Old 07-07-2008, 09:45 PM   #5
C_Wood
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Join Date: Dec 2005
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Location: Winchester
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03 WRX
WRB 16g

Default

Thanks for all the help guys. I found the resistor assembly and it has a nice burn mark in it. Time for a new one I guess. Thanks again.

-Charlie
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Old 07-10-2008, 09:50 PM   #6
C_Wood
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03 WRX
WRB 16g

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Well I swapped out the resistor assembly and guess what. Still no power on setting 2. I guess the switch is what I'm going to replace next... Only bad thing is I'm going on vacation for a week and won't be able to play with it.
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Old 07-10-2008, 10:49 PM   #7
Cougar4
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You stated that the resistor assembly had a burn mark. Did you make sure all the connections to the resistor pack have a good connection to it?
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Old 07-10-2008, 11:13 PM   #8
C_Wood
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WRB 16g

Default

Well I thought it was a burn mark but I guess I was wrong. The new resistor assembly had the same mark so I'm guessing it was just where it was soldered. It didn't look to clean and looked dark, thats why I thought it was a burn mark.

Yep, I did make sure the connection to the resistor pack had a good connection.
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