•  The climate control unit calculates the applied voltage characteristic to the blower motor based on the input the target temperature, ECT sensor and cabin temperature sensor, and outputs the drive signal to the power MOS FET. However, the warm-up correction, mild start correction and defroster correction take precedence under the operation conditions of the warm-up correction, mild start correction and defroster correction.

•  Controls the blower motor applied voltage according to the increase in engine coolant temperature to prevent discomfort caused by a high volume of cold air blown from the vents in winter after starting the engine. However, the engine coolant temperature correction is not performed when the target temperature is low, and the airflow mode is in any mode other than HEAT, HEAT/DEF mode.

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•  Limits blower motor applied voltage for 3 s after the blower motor is started in summer to prevent discomfort caused by a high volume of hot air blown from the vent. However, the mild start correction is not performed when the airflow is any mode other then VENT, or cabin temperature is low.

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•  When the air intake mode is at FRESH while driving at high speed, the airflow volume increases due to the wind blowing against the vehicle and air conditioner performance is negatively effected. To prevent this, the blower motor applied voltage is corrected according to the vehicle speed.

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•  To improve defrosting of the windows, a correction (+2 V) is added to the blower motor applied voltage when the defroster switch is turned on.

•  The blower motor applied voltage (airflow volume) can be switched in seven steps with the fan switch.