Question about 2003 Mercury Sable

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Climate control blower switch operates on one speed only

A/C Blower control switch operates ONLY on high speed; no other setting works. Bad fuse or replace switch? Instructions for replacing switch please?

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  • 7,353 Answers

Its the "blower resistor". thats what you need to replace.

Posted on Sep 23, 2009

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1 Answer

Heater fan runs when heater is off.06 ford expoler


Automatic or manual climate control ?
  • The blower motor does not operate correctly - manual climate control
  • Circuitry short
  • A/C blower motor resistor
  • A/C blower motor switch
  • Blower motor high speed relay
  • Go To Pinpoint Test O .

  • The blower motor does not operate correctly - EATC
  • Circuitry short/open
  • A/C blower motor speed control
  • EATC module
  • Go To Pinpoint Test Q .

Pinpoint Test Q: The Blower Motor Does Not Operate Correctly - EATC
Normal Operation Under normal operation, the blower motor control module receives a 1-2 volt signal from the EATC module through circuit CH218 (GN/VT) to determine the desired blower motor speed. The EATC module receives a feedback voltage from the blower motor control module through circuit VH219 (GY) to determine actual blower motor speed. When the highest blower motor setting is selected, the EATC module sends 12 volts to the blower control module through circuit CH217 (BN).
    Possible Causes
  • An open, short to voltage, ground or together in circuits CH218 (GN/VT), VH219 (GY) or circuit CH217 (BN)
  • Blower motor control module
  • EATC module
  • If automatic HVAC system i would suspect Blower motor control module .

Oct 27, 2016 | 2006 Ford Explorer

2 Answers

Fan blower not blowing


Most likely need a new blower motor resistor

Aug 04, 2014 | 2001 BMW 325Ci

1 Answer

What could be wrong with my 2001 f350 v10 climate controls that the fan only works on high and the blend only works in defrost no matter what is selected?


Almost sounds like your climate control switch is bad as it controls everything including the switching and blower speed with the exception of the blower speed being a blower resistor issue (allows multiple speeds).

Nov 05, 2011 | 2001 Ford F350 Super Duty SuperCab

1 Answer

Why wont my a/c or heater fan come on?


When the blower works only on the high setting its usually a bad blower resistor which is right near the blower motor. now you say it would always blow high regardless of the fan speed setting that would indicate probably the climate control unit or a connector problem somewhere. finally it not working at all may be the climate control unit or connection went bad even further. it might have a blown fuse or a bad blower motor in addition to the climate control unit or connector problem .check for power and ground at the blower motor. the power is supplied from fuses and may have a relay also. the ground is supplied from the climate control unit and goes through the resistor to control the fan speed. good luck

Oct 30, 2011 | 1997 Lincoln Continental

1 Answer

My fan for the Ac and heater will not work. iam trying to replace the blower resister


the blower resistor is in the plenum... above the heater core.
If the blower motor does not work at all ... you may have a bad climate control switch.... or blown fuse even... as the resistor is a two stage coil... Low speed and medium speed... no resistor on High and would normally not go at the same time....

Sep 30, 2010 | 2004 GMC Envoy

1 Answer

AC Control Switch Only Works on High 2001 Voyager Climate Control


this problem is caused by the blower motor speed control resistor being defective, it is located next to the blower motor.

Aug 04, 2009 | 2001 Chrysler Voyager

1 Answer

Front climate control blower only works on high speed.


Replace your blower motor resistor
Resistor located under dash on passenger side in screwed into blower housing. May be able to be repaired. Requires soldering a small piece of "unmelted solder" across where the old fusible link was. look carefully at resistor. Or else just replace. Buy new. Junkyard resistor likely to be as bad as yours.

Jun 13, 2009 | 2002 Chrysler Town & Country

1 Answer

Blower stuck on high speed


yes it will run on high with the resistor unpluged i would have to say your resistor is bad if it does not work at any other speed than high please rate and let me know -jeff

Aug 26, 2008 | 2003 Dodge Grand Caravan AWD

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