Liberty, Wrangler, 1997-2005

A/C & Heater Control Calibration

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NOTE
Use this procedure to ensure that the A/C-heater control is correctly calibrated to the blend door actuator. If the calibration is not correct, the heating-A/C system may experience a condition where full heating or cooling capabilities cannot be obtained.

Manual calibration of the A/C-heater control should be performed if the blend door actuator is not functioning properly, or if the temperature of the conditioned air is too warm with the temperature control in the full cold position or too cool with the temperature control in the full hot position.


NOTE
This calibration procedure can only be started within the first ten seconds after the ignition switch has been turned from the OFF position to the ON position. Make sure that the battery is fully charged prior to beginning the calibration procedure.


NOTE
The length of the pause made at each end of the temperature control rotation (sweep) is important. 5 seconds) or too long (greater than 1.5 seconds).

  1. With the ignition switch in the OFF position, move the temperature control to its middle (12 o'clock) position.
  2.  
  3. Turn the ignition switch to the ON position (do not start the engine).
  4.  
  5. Within 10 seconds of turning the ignition switch from the OFF to the ON position, perform the following rotations (sweeps) of the temperature control.
    1. From the 12 o'clock position, rotate the temperature control counter-clockwise to the full cold position. Pause one second.
    2.  
    3. Rotate the control clockwise to the full hot position. Pause one second.
    4.  
    5. Rotate the control counter-clockwise to the full cold position. Pause one second.
    6.  
    7. Rotate the control clockwise to the full hot position. Pause one second.
    8.  
    9. Rotate the control counter-clockwise to the full cold position.
    10.  

  6.  

 
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