Question about 2002 Jeep Grand Cherokee

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My blower motor doesn't work, I replaced the blower motor and it still doesn't blower, the fuse is good so what is the problem?

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  • Master
  • 675 Answers

The resistor block on the heater plenum is probably bad...these tend to open over time and will cause this type of failure...to find it, it will be near the fan motor on the heater housing...it usually has 3-4 wires connecting to a connector. This resistor is mounted in the air flow from the fan motor due to the fact that it needs to be cooled...it controls the different speeds of the motor and is inline with the power source of the motor...it is usually not very expensive and ..in fact you could go to autozone and they should be able to pull up a diagram to show you where it is exactly

Posted on Dec 30, 2010

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  • Master
  • 836 Answers

Sounds like the switch or the resistor pack, if the motor works on the highest speed then it"s a good bet that it's the resistor pack. You should test before replacing anything.

Posted on Dec 30, 2010

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  • Master
  • 1,165 Answers

It's going to be a bad relay or circuit breaker.

Posted on Dec 30, 2010

6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: 2005 Town Country front blower motor inop fuse/relay ok

Break Down And Replace The Blower Motor


REMOVAL

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIR-BAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN AN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY OR DEATH OR DEATH.

NOTE: The blower motor is located on the passenger side of the vehicle under the instrument panel. The blower motor can be removed from the vehicle without having to remove the HVAC housing.

  1. Disconnect and isolate the negative battery cable.
  2. Remove the passenger side cowl trim panel.
  3. Position the carpet to access the front upper screw that secures the air inlet housing.
  4. Remove the recirculation door actuator.
  5. Disconnect the blower motor wire lead connector from the blower motor resistor or power module, depending on application.
    1. Remove the one screw (from the top) that secures the lower air inlet housing to the upper air inlet housing.
    2. Remove the four screws (from the bottom) that secure the lower air inlet housing to the upper air inlet housing and remove the lower HVAC housing.
    3. Push the rubber grommet through the opening in the lower air inlet housing.
    4. Route the blower motor wire lead through the opening in the lower air inlet housing and remove the lower air inlet housing from the vehicle.
    5. Position the recirculation-air door as necessary to access and remove the three screws that secure the blower motor to the lower half of the HVAC housing.
    6. Gently flex the recirculation air door downward to gain access to remove the blower motor from the HVAC housing. NOTE: To aid in installation, note the position of the blower motor mounting tabs prior to removal
      1. Remove the blower motor from the HVAC housing by rotating and tilting the blower motor as necessary.
      INSTALLATION

      1. Gently flex the recirculation-air door downward to gain access to install the blower motor into the HVAC housing.
      2. Position the blower motor to the HVAC housing and tilt and rotate the blower motor as necessary to install it into the HVAC housing.
      3. Align the blower motor mounting tabs to the locations noted during removal and install the three screws that secure the blower motor to the HVAC housing. Tighten the screws to 2 N·m (17 in. lbs.).
      4. Route the blower motor wire lead through the opening in the lower air inlet housing and seat the rubber grommet.
      5. Position the recirculation door pivot shaft into the lower air inlet housing and install the inlet housing.
      6. Install the four screws (from the bottom) that secure the lower air inlet housing to the upper air inlet housing and the lower HVAC housing. Tighten the screws to 2 N·m (17 in. lbs.).
      7. Install the one screw (from the top) that secures the lower air inlet housing to the upper air inlet housing. Tighten the screw to 2 N·m (17 in. lbs.).
      8. Connect the blower motor wire lead connector to the blower motor resistor or power module, depending on application.
      9. Install the recirculation door actuator.
      10. Reposition the carpet.
      11. Install the passenger side cowl trim panel.
      12. Reconnect the negative battery cable.
      13. Perform the heater-A/C control calibration procedure.

Posted on Feb 07, 2009

  • 1 Answer

SOURCE: 1999 vw heater blower dont work

My daughter has a 99 Beetle GL and the A/C and fan went out. It's the A/C haeadunit that needed to be replaced. The switches short out and you have to replace the whole piece. VW charges about $225 for the part Hope that helps

Posted on Mar 07, 2009

  • 784 Answers

SOURCE: location of blower motor fuse

Fuse blower motor is not in the fuse box. It is located outside. lOpen the hood, on the driver side near the fender, about 1 feet from the fuse box toward the direction of the radiator, there is a retangular about 1x2 in with wire coming out from each end. Snap it open, inside is the the wire fuse.

Posted on Aug 05, 2009

  • 534 Answers

SOURCE: blower motor doesn't work and has no power to it

Check the blower multispeed control resistor pack is not faulty.
The resistor pack is usually located in the air ducting, in the blower fan airflow.
Basically, +12v power is supplied (via fuse) to the fan speed control switch, which then passes via the selected speed control resistor, to the fan motor. Often a interface relay is used to switch the blower motor high current.

Posted on Aug 31, 2009

SOURCE: blower motor does not work

I had the same problem, replace, replace, replace. Check, check and recheck. What I found was the blower motor resistor, located in the blower squirrel cage area, two prongs and a curly wire, was bad. Took the new one back, (it ohmed out okay, continuity ok, all ok!) replaced it with another, and Bingo, problem solved. Frustrating to say the least. After two relays and a blower switch, and test, test and retest. It was a faulty resistor. Made in Mexico. And no guarentee, even though new, it works. Trial and error. Even the dealer parts are Honcho en Mexico. Thanks NAFTA. You gonna make us all welfare babies.

Posted on Sep 28, 2009

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Not sure what fuse or fuses you have replaced. I know there is a fuse marked BLWR in the fuse panel under the hood but the is also another fuse that is a vital part dealing with the blower motor working. Above in the second picture is the fuse layout in the fuse panel inside the truck. I marked the fuse you need to check (HTR A/C). If that fuse is good then you need to check where your power loss is. In the first picture above, that is one of the connectors on the control panel (power control switch &if you have a manual control not auto). The terminal marked with an arrow you need to chaeck for power at that terminal (Should be a brown wire. If no power, find the open wire from there to the HTR A/C fuse. If your good there you can make sure your getting power to the blower motor. Not sure of the wire color but it's the one that's not black. Make sure you have power there with the switch on. remember to use a seperate ground and not the other wire (the black one) on the connector at the blower motor. If no power the find the open wire from there to the replay. If all is good then there's much more tracing but I would start here. Hope it's just that other fuse. Hope this helps....

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