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Posted on Oct 19, 2008
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Durango vent blower fan

Front vents not working but rear vents working

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  • Anonymous Dec 31, 2008

    My blower moter only worked on high and now it don't work at all. Is it the resister or the relay?

  • kjrita Jan 30, 2009

    So we replaced the resistor and then, blower motor before reading this. When the blower motor was replaced, the new resistor fried. We looked at the connector to the resistor and it was melted. If we replaced the resistor with the new blower motor in place, do we also need to replace the melted connector? If so, please assist on how this is done. Thank you!

  • Anonymous Mar 17, 2014

    06 durango, front fan does not work, rear fan works fene

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  • Posted on Oct 23, 2008
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The blower motor resistors are known for going bad. Usually its because the blower starts drawing too much current. What I would recommend doing if you can and have the tools, is to check the blower motor connector to make sure 12 volts is present. If so than I would recommend replacing the blower motor resistor. Then if the same issue ever happens again and the blower motor resistor is bad again, you will need to replace the blower motor and the blower resistor as the final repair.
Here is some info about testing the resistor using a multimeter it you have one:

DIAGNOSIS AND TESTING- BLOWER MOTOR RESISTOR 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. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
Both the front blower motor resistor and the optional rear heater-A/C unit blower motor resistor can be diagnosed using the procedure that follows. For circuit descriptions and diagrams, refer to Air Conditioning/Heater in Group 8W - Wiring Diagrams.

  1. Disconnect and isolate the negative battery cable.
  2. Disconnect the wire harness connector from the blower motor resistor block.
  3. Check for continuity between each of the blower motor switch input terminals of the resistor and the resistor output terminal. In each case there should be continuity. If OK, repair the wire harness circuits between the blower motor switch and the blower motor resistor block or blower motor as required. If not OK, replace the faulty blower motor resistor block.
Here is the information on replacing the resistor:

REMOVAL
  1. Disconnect and isolate the battery negative cable.
  2. From the passenger foot well area, remove the two hex screws used to secure the blower motor resistor.
  3. Unplug the front blower motor resistor from the wire harness connector.
  4. Remove the front blower motor resistor from the HVAC unit.
Here is an exploded view of the HVAC box. The resistor is #63 in the picture and the actual part may appear slightly different:

Durango vent blower fan - spacer.gif 1100_024_0003.gif spacer.gif View Full Image spacer.gif


If any issues such as no voltage at blower connector or damaged or melted connector at the resistor then let me know.

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