Correction; Airflow Volume Manual Control; Airflow Mode Control Outline [Full-Auto Air Conditioner]; Features - Mazda RX-8 2009 Service Highlights

CONTROL SYSTEM [FULL-AUTO AIR CONDITIONER]

Correction

Mild start correction
Controls blower motor applied voltage for a maximum of 17 s when the blower motor is started in summer to
prevent discomfort caused by a high volume of hot air blown from the blow-off opening. However, the mild start
correction is not performed when the airflow is in a mode other than VENT, the A/C mode is off, or the target
temperature is high.
HI
LO
Warm-up correction
Controls blower motor applied voltage in accordance with the increase in engine coolant temperature to prevent
discomfort caused by a high volume of cold air blown from the blow-off opening. However, the warm-up
correction is not performed in a mode other than HEAT or HEAT/DEF, or when the target temperature is low.
MAX HOT and MAX COLD correction
If the set temperature is at 32.0 or 18.0, the
blower motor applied voltage is fixed at HI.
However, during the warm-up correction, the MAX
HOT correction is not performed.
Defroster correction
When the defroster switch is turned on, air
volume is increased by adding blower motor
applied voltage (2 V) to improve defrosting.
Burn prevention function at start
If the blower motor is started from a stopped
condition with a blower motor applied voltage at
4.0 V or more, the blower motor applied voltage
is fixed at 4.0 V for 2 s to prevent blower motor
burning due to excess electrical current.

Airflow Volume Manual Control

The blower motor applied voltage (air volume) can be switched between seven steps by operation of the fan
switch.
Fan switch
1st speed
2nd speed
3rd speed
4th speed
5th speed
6th speed
7th speed
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AIRFLOW MODE CONTROL OUTLINE [FULL-AUTO AIR CONDITIONER]

NG: AIRFLOW MODE CONTROL

Features

The airflow mode control includes the airflow mode automatic and manual controls, and the A/C amplifier
controls the airflow mode actuator to switch the blower mode.
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07-40–12
EVAPORATOR TEMPERATURE 4 °C {39 °F} OR LESS
EVAPORATOR TEMPERATURE 10 °C {50 °F} OR MORE
7 10 17
S
HI
LO
OFF
40 {104}
ENGINE COOLANT TEMPERATURE
Blower motor applied voltage
3.4 V
5.0 V
6.6 V
8.2 V
9.8 V
11.4 V
B+
ar8uun00000063
68 {154}
°C {°F}
ar8uun00000064
id0740a1102700