A/C Calibration Test: Description

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Automatic Temperature Control (ATC) module must be reset or recalibrated each time a door actuator is replaced or when ATC module is replaced. It is necessary for ATC module to learn feedback voltage values for each door stop position for all doors in front HVAC unit housing and rear HVAC unit housing. If an actuator blend door, mode door, recirculation door, or door actuator is out of calibration, ATC system will not perform at maximum efficiency.