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Blower will not work in auto mode only in manual, what do i do?

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If it's a gas unit could be a variety of things, if it is electric it most likely a heat sequencer.

Posted on Dec 03, 2012

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Where's the relay for the blower located in a 2001 suzuki xl-7 grand vitara


the car has 26 relays!@
and 1 to or 3 fans
are you saying the heater/ A.C blower is dead./ the HVAC?
or engine fan (its mech for rad)
or condenser fan, no symptoms posted, just relay hunts.


my guess is you dont know how the blower in the heater works.
so will cover that.
The HVAC.
First test is blower in high, failing is bad fuse.?
if lower speeds fail, (a top clue) then the blower resistor is bad.
but only on the manual hvac option!

lets backup,I have full parts list on your car, here, USA. spec
the car came new with 2 class type of HVAC
manual AC with blower resistor
or
full auto system that as a new brain box, and a transistor box
that controls blower, at all times, its just a transistor. (no brains)
some cars with the full auto HVAC feature
have a self test mode.
and self calibration feature (learn) all this is in the BIG BOOK.
apples and oranges, different to the extreme.
so instead of me guessing car you bought. ill tell you to RTM

just 4 bucks, and only covers that exact year, and car only.
not a clone book as the folks post here , RAG books.
the real deal here from suzuki actual....

the BIG BOOK. see chapter HVAC and read.
https://suzukipitstopplus.com/Products/1174-2001-grand-vitara-xl-7-service-manual.aspx

May 28, 2016 | 2001 Suzuki Grand Vitara

1 Answer

I have a 2011 Chevy Traverse that blows hot air.


Depending if it's manual temp control or auto.............

Here's manual

1 - Air Temperature Sensor - Upper Left
2 - Air Temperature Actuator - Left
3 - Air Temperature Sensor - Lower Right
4 - Air Temperature Actuator - Right
5 - Mode Actuator
6 - Air Temperature Sensor - Upper Right
7 - Blower Motor
8 - Blower Motor Control Module
9 - Evaporator Temperature Sensor
10 - Air Temperature Sensor - Lower Left




26128900-uuob5xk5qpmufdktz2iyu4qm-2-0.gif

Here's auto

1 - Mode Actuator
2 - Recirculation Actuator
3 - Blower Motor
4 - Blower Motor Control Module
5 - Air Temperature Actuator
6 - Evaporator Temperature Sensor



26128900-uuob5xk5qpmufdktz2iyu4qm-2-1.gif

Mar 13, 2016 | 2011 Chevrolet Traverse

3 Answers

Fan doesn't work in heat mode it works on all other functions. Heat does come out but fan doesn't kick in. Outside unit is operating


AC inside fan doesn't come on AUTO - DoItYourself.com Community Forums

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Nov 01, 2015 | Heating & Cooling

1 Answer

Ac works but fan only works on high all other settings do nothing


2wd? 4wd? Engine size? Auto or Manual A/C?..... If its Manual a/c the blower resistor is bad, if its Auto A/C the Front Blower Module is bad.

Nov 19, 2009 | 2005 Jeep Grand Cherokee

1 Answer

Just a little question, guys!


The blower has absolutely nothing to do with outdoor air. Having the T-Stat set to auto lets the blower come on only when the A/C-heat comes on. With the switch in the ON position the blower simply runs all of the time. Depending on your living space (high ceilings, multi-level) having the blower on constantly while costing a small amount to run can actually save some money and make you more comfortable in the summer. However most people will leave it in auto in the winter so they don't feel as if they have a draft from the air movement as the blower is in high speed in fan on position and cool modes and low speed in heat mode. Many furnaces today are equipped with a setting that allows the blower to run constantly at a lower speed or simply run for a min. or two after the A/C=Heat have turned off.

Jan 17, 2009 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

EATC Heater Blower Inoperative


I would suspect the blower resistor based on your description. The resistor is located under the hood on this vehicle

Nov 08, 2008 | 2005 Ford Crown Victoria

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