Tuesday, October 29, 2013

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How to Replace the Blower Motor Resistor on an Odyssey

How to Replace the Blower Motor Resistor on an Odyssey

A common sign of a bad blower motor resistor is when the fan motor refuses to operate on the lower speed settings, operating instead only in the full-on or full-off position. When properly functioning, the lower speed settings add resistance to the current, causing the motor to run slower. If youre having problems with the fan settings on your Honda Odyssey, it might be time to replace the blower motor resistor.



    Evacuate your air conditioning system to recover the refrigerant, or take the Odyssey to an auto mechanic and have him evacuate the system.


    Disconnect the negative battery cable from the battery.


    Remove the two rubber stops from the inside left and inside right of the glove box, using your fingers. Tilt the glove box all the way down toward the floor. Remove the two bolts on the left and right side of the glove box. Remove the glove box.


    Cut the plastic cross brace spanning the open area behind the glove box, by slicing the left and right sides with a utility knife. This piece does not need to be replaced.


    Open the hood of the car, if it is not already open. Remove the two nuts on the two refrigerant lines to and from the evaporator, located to the left rear of the motor in the engine compartment. Cap the open refrigerant openings with plastic caps. Remove the nut on the firewall, above the two refrigerant lines you just loosened. This nut holds the evaporator in place on the other side of the firewall.


    Return to the glove box area. Remove the wiring harness from the evaporator. Disconnect the temperature sensor (the smaller wire on the upper left). Remove the mounting bolts. Remove the evaporator.


    Remove the front passenger airbag (see warning below).


    Disconnect the wiring harnesses from the blower motor. Remove the clips that hold the control cable in place. Remove the control cable. Remove the mounting bolts from the blower motor. Remove the blower motor unit.


    Remove the two screws holding the blower resister to the blower motor. Reinstall a new blower resister.


    Installation is the reverse of removal.

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