Tuesday, June 14, 2011

How to replace blower motor resistor on 2005 Dodge Ram 1500?

This sounds like a bad resistor, it is what controls the speed of the motor, here is the procedure for replacement


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 AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN AN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY OR DEATH.
  • THE BLOWER MOTOR RESISTOR MAY GET VERY HOT DURING NORMAL OPERATION. IF THE BLOWER MOTOR WAS TURNED ON PRIOR TO SERVICING THE BLOWER MOTOR RESISTOR, WAIT FIVE MINUTES TO ALLOW THE BLOWER MOTOR RESISTORS TO COOL BEFORE PERFORMING DIAGNOSIS OR SERVICE. FAILURE TO TAKE THIS PRECAUTION CAN RESULT IN POSSIBLE PERSONAL INJURY .



  1. Reach under the instrument panel near the BLOWER MOTOR and disconnect the wire harness connector from the blower motor resistor .
  2. Remove the two screws that secure the blower motor resistor to the HVAC housing.
  3. Remove the blower motor resistor from the HVAC housing.

INSTALLATION


  1. Position the blower motor resistor into the opening of the HVAC housing near the BLOWER MOTOR.
  2. Install the two screws that secure the blower motor resistor to the HVAC housing. Tighten the screws to 2.2 N.m (20 in.lbs.) .
  3. Connect the wire harness connector to the blower motor resistor.
  4. Reconnect the negative battery cable.
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