Blower fan not working at all?
alconk
08-26-2009, 10:53 PM
Hello again, just thought I could get some idea why my blower fan don't work.. at all. It's in a 92 SE with the 3.3. Is there a way to tell if it's the switch or could it be something else??
alconk
09-06-2009, 11:54 AM
I'm really surprized no one responded to this?? Is it because nobody knows. I'd really like to fix this problem. Please help.
3100
09-07-2009, 02:25 AM
check HTR AC fuse (25A)
then find relay with (Dark Blue, Purple, Black and Orange wires) disconnected relay then jump 12V to purple terminal of the relay connector see if the blower works now. If yes motor is OK, if not motor is bad.
then
- ignition key ON
-select mode (heater)
-blower switch to (low)
-disconnect blower fan relay
- are you getting any voltage on the dark blue terminal of the relay connector?
then find relay with (Dark Blue, Purple, Black and Orange wires) disconnected relay then jump 12V to purple terminal of the relay connector see if the blower works now. If yes motor is OK, if not motor is bad.
then
- ignition key ON
-select mode (heater)
-blower switch to (low)
-disconnect blower fan relay
- are you getting any voltage on the dark blue terminal of the relay connector?
doctorhrdware
09-07-2009, 02:58 AM
If no power at all I would bet that there is 12Vdc is missing from the Orange wire which is B+. I would measure the voltage on the orange wire. If it is missing check fuses.
3100
09-07-2009, 03:28 AM
orange is powered only when there the switch is set to high
dark blue will show some voltage in all other speed settings.
If you are really good with this and want to play with this step by step then do this.
there is brown wire connecting behind the hvac control assembly Cavity C should have battery voltage with key in run position. if not then you have bad fuse or open in between fuse and cavity c. If you get battery voltage at cavity c, you should also get battery voltage at cavity E, durring foloving mode selections (MAX, NORM, B1, Vent, Heater, Blend and Def)
dark blue will show some voltage in all other speed settings.
If you are really good with this and want to play with this step by step then do this.
there is brown wire connecting behind the hvac control assembly Cavity C should have battery voltage with key in run position. if not then you have bad fuse or open in between fuse and cavity c. If you get battery voltage at cavity c, you should also get battery voltage at cavity E, durring foloving mode selections (MAX, NORM, B1, Vent, Heater, Blend and Def)
inkslinger00743
10-02-2009, 05:35 PM
the Realy, or the control cluster is bad. Ive seen lots of the 90's grand ams do this.
alconk
10-02-2009, 11:24 PM
I feel embarrassed to say what the problem was......no fuse in the fuse panel. Installed one and works great!
3100
10-03-2009, 05:21 AM
read my post #3 I suggested long time ago to check fuse first :grinyes:
alconk
10-03-2009, 11:26 AM
read my post #3 I suggested long time ago to check fuse first :grinyes:
Ya I know. I actually did check the fuses all at once with a test light. This time I went back to check what circut it was in and wow it's missing. I appreciated you help. Thank you!!:smile:
Ya I know. I actually did check the fuses all at once with a test light. This time I went back to check what circut it was in and wow it's missing. I appreciated you help. Thank you!!:smile:
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