Find fuses for blower motor - 1994 Eagle Summit

It's probably not going to be a fuse issue , you people have limited thinking because you have no clue how the electronic's work on your vehicles . The HVAC contol module as battery supplies yes , but control the blower motor with PWM - pulse width modulation controller .

Blower Motor Control Processor
The blower motor control processor is an interface between the HVAC control module and the blower motor. The blower motor speed control, battery positive voltage and ground circuits enable the control processor to operate. The HVAC control module provides a pulse width modulation (PWM) signal to the control processor in order to command the blower motor speed. The processor supplies 12 volts to the blower motor through the blower motor voltage supply circuit. The control processor uses the blower motor ground as a low side control to adjust the blower motor speed.

Most of the time the Blower Motor Control Processor is bad , without testing this is just a guess . Your best bet , take your vehicle to a qualified repair shop.

Fuse for rear air ????? No air coming from rear vent's ? That would be caused by the HVAC blower motor not working . Probably not a fuse issue , if the fuse is blown you have a bigger issue . Fuse's don't just blow for no reason - electrical short circuit, too much current draw etc.. . More then likely it's a problem with the blower motor control module or the blower motor . Located behind the right rear trim panel . But go ahead an check the fuse anyway , fuse # 26 - 25 amp located in the underhood fuse / relay box . marked RR -BLWR/ 110 VAC
Auxiliary Air Speed
The auxiliary blower motor is controlled by the front auxiliary blower motor switch. If the vehicle is equipped with rear DVD (U32), the auxiliary blower motor can be controlled by the overhead console, vehicle entertainment system (VES). The front auxiliary blower switch must be in the AUX position in order to control blower speed from the VES. The VES will send a class 2 message to the HVAC control module requesting a blower motor speed.
The auxiliary blower motor control module is an interface between the HVAC control module and the auxiliary blower motor. The auxiliary blower motor speed control, auxiliary blower motor speed signal, blower motor speed control, and ground circuits enable the control processor to operate. The HVAC control module sends the commanded blower motor speed to the control processor through a 0 to 8-volt linear ramped blower motor speed control circuit. As the blower motor speed control voltage increases, the blower motor speed increases. The control processor sends the actual blower speed to the HVAC control module through a 0 to 12-volt blower motor speed signal circuit. The control processor uses the blower motor ground as a low side control to adjust the blower motor speed. The underhood fuse block supplies 12 volts to the blower motor through the blower motor voltage supply circuit.

That fuse sounds like it powers the ac compressor.
The blower motor usually takes a 30 amp fuse.
Does the blower motor work if you hook it to direct voltage ?

Both are possible.But it can be blower motor issue mostly.Its taking too load and that's blowing the fuse.How to Test and Replace Blower motor on car? http://repairhelpcenter.blogspot.com/2011/12/how-to-test-and-replace-blower-motor-on.html--------- How to Replace Blower Motor Wheel? http://repairhelpcenter.blogspot.com/2011/12/how-to-replace-blower-motor-wheel.html
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Also more help solutions recommended. Click the link below :---
Blower motor replacing for all vehicles? http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html
----------Blower motor Resistor shorting problem? http://schematicsdiagram.blogspot.com/2011/12/blower-motor-resistor-shorting-problem.html
--------This will help.Thanks.

There are two fuses associated with the blower motor. Fuse #1 MULTI-PURPOSE 25A is the blower motor fuse, and fuse #15 MULTI-PURPOSE 10A is the blower motor relay switch fuse.

Hi!!
Look ion the INSTRUMENT PANEL Fuse Box, there are two blower motor relays and two fuses, look on the inside of the relay cover for a diagram. The relay you are looking for should be labeled FRONT BLOWER MOTOR RELAY and the rear one should say AUXILIARY BLOWER MOTOR RELAY.
The TWO fuses with the same name on passenger compartment fuse box check:

• fuse #39 30A fuse. AUXILIARY BLOWER MOTOR
• fuse #36 30A fuse. AUXILIARY BLOWER RELAY

Check heater fuse.
If fuse good - could be a failure of the blower fan motor or blower control switch.
If fuse bad - bad blower fan motor could have blown the fuse.
DO: check fuse, then blower motor.
Pricing: new blower motor: Duralast PM270 $43.99
new heater control switch: Duralast SW229 $46.99 (without
A/C).
I'd expect your blower resistor to be good - when they fail, the blower only will work on HIGH setting.

sometimes it can be a fuse but not always. there are three components that usually cause the blower to stop working. 1-fuse 2-blower motor regulator 3- blower motor. The blower motor and the blower motor regulator both sit in the same housing under the windshield beneath the cowl cover. The blower motor fuse should be a single strip fuse by itself near the left shock tower.

Did you find out a solution to your problem? I have a 1996 trooper that is showing most of the same symptoms that you have. I'm curious as to your fix. Was it simply a bad ground?