Mazda 6 Training Manual page 346

Airflow Volume Automatic Control
• Based on the set temperature, the ambient temperature, and sunlight intensity, the climate control unit
calculates the blower motor voltage characteristic (AUTO voltage). It compares the differences among this
voltage characteristic, and the target temperature (control computation value T2) and then determines the
voltage to be applied to the blower motor.
.
1 Transition period
2 Stable period
3 When cooling
4 When heating
5 Increases/decreases linearly with sunlight intensity
6 Blower motor applied voltage characteristic
Correction
Coolant temperature correction (warm-up correction)
• To prevent a large volume of cold air from blowing through the ventilation outlets when the engine is started in
winter, coolant temperature control links the blower motor voltage to the rise in engine coolant temperature.
However, coolant temperature correction does not operate when the defroster correction is running, when the
cabin temperature is above 20° ° ° ° C {68° ° ° ° F}, or when airflow is in VENT mode.
.
1 Rise to auto voltage
2 Blower motor applied voltage
3 Coolant temperature
CONTROL SYSTEM
7 Blower motor applied voltage
8 Control computain value T2
9 MAX-HI
10 MIDDLE-HI
11 AUTO-HI
4 Low
5 High
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