GrandCaravan 2008

Blend Door Actuator

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Recalibrating Actuators



Specific to:

Chrysler Town & Country 2008-2009

Dodge Grand Caravan 2008-2009


NOTE
The A/C-heater control module must be recalibrated each time an actuator motor or the A/C-heater control is replaced. If the vehicle is so equipped, the calibration procedure also includes the rear HVAC positions for each actuator motor.

Calibrate the A/C-heater control with the following procedure:

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Turn the ignition switch to the ON position.
  4.  
  5. If equipped with the Manual Temperature Control (MTC) system, press and hold the Rear Wipe/Wash and Recirculation buttons for at least 5 seconds.
  6.  
  7. If equipped with the Automatic Temperature Control (ATC) system, simultaneously press and hold the Power and Recirculation buttons on the A/C-heater control for at least 5 seconds.
  8.  
  9. The MTC A/C-heater control Rear Wipe/Wash button Light Emitting Diode (LED) and Recirculation button LED, or the ATC A/C-heater control Delay and Recirculation graphics, will begin to flash when the calibration procedure has begun.
  10.  
  11. The calibration procedure should take less than 2 minutes to complete for the MTC A/C-heater control, and less than 20 seconds for the ATC A/C-heater control. When the LED-s or graphics stop flashing, the calibration procedure is complete.
  12.  
  13. If the LED-s or graphics continue to flash beyond the 2 minute (manual) or 20 second (ATC) calibration time, this indicates that the A/C-heater control has detected a failure and a Diagnostic Trouble Code (DTC) has been set.
    NOTE
    The LED-s or graphics will continue to flash even after the ignition switch is cycled OFF and ON, until a successful calibration is completed or until the vehicle has been driven about 8 miles (13 km).

  14.  

Removal & Installation



Specific to:

Chrysler Town & Country 2008-2009

Dodge Grand Caravan 2008-2009

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect and isolate the negative battery cable.
  4.  
  5. Remove the rear heater-A/C (HVAC) housing (1) and place it on a workbench. Refer to Auxiliary Heating & Air Conditioning, HVAC Housing, removal & installation.
  6.  
  7. Disconnect the wire harness connector (2) from the rear blend door actuator (3).
  8.  
  9. Remove the 2 screws (4) that secure the rear blend door actuator to the back of the rear HVAC housing and remove the actuator.

    Click image to see an enlarged view

    Fig. Remove the rear blend door actuator from the vehicle

  10.  

To install:

  1. Position the rear blend door actuator (3) onto the HVAC housing (1). If necessary, rotate the actuator slightly to align the splines on the actuator output shaft with those on the rear blend-air door coupler.
  2.  
  3. Install the 2 screws (4) that secure the rear blend door actuator to the rear HVAC housing. Tighten the screws to 10 inch lbs. (1 Nm).
  4.  
  5. Connect the wire harness connector (2) to the rear blend door actuator.
  6.  
  7. Install the rear heater-A/C housing. Refer to Auxiliary Heating & Air Conditioning, HVAC Housing, removal & installation.
  8.  
  9. Calibrate the A/C-heater control. Refer to Reset Procedure.
  10.  

 
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