Mazda 2006 MX-5 - Airflow Distribution

BASIC SYSTEM
07–11–4
Airflow Distribution
End Of Sie
A/C UNIT CONSTRUCTION/OPERATION
E5U071 161132N01
Construction
• An A/C unit with integrated cooling and heater units has been adopted.
— Evaporator
— Heater core
— Expansion valve
— Air mix damper
— Air intake door
— Evaporator temperature sensor
— Power MOS FET
— Air mix actuator
— Air intake actuator
— Blower motor
Air Mix Damper Operation
• The air mix damper, installed in the A/C unit, controls HOT or COLD positions, depending on the position of the
temperature control dial. As a result, the airflow temperature is controlled.
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AIRFLOW
MODE
AIRFLOW RATE (%)
VENT WAIST HEAT DEFROSTER
DRIVER-SIDE
PASSENGER-
SIDE
DRIVE
R-SIDE
PASSE
NGER-
SIDE
DRIVE
R-SIDE
PASSE
NGER-
SIDE
DRIVER-SIDE
PASSENGER-
SIDE
SIDE CENTER CENTER SIDE SIDE CENTER CENTER SIDE
OPEN-VENT 21.25 21.25 21.25 21.25 7.5 7.5 – – – – – –
OPEN-BI-
LEVEL
12.5 12.5 12.5 12.5 7.5 7.5 17.5 17.5 – – – –
OPEN-HEAT – – – – 12.5 12.5 25 25 25
VENT 2525 2525– – – –– – – –
HEAT – – – – – – 35 35 4.5 3 19.5 3
HEAT/DEF – – – – – – 25 25 7.5 7.5 27.5 7.5
DEFROSTER– – – –– – – –1520 5015
AIR MIX
ACTUATOR
POWER MOS FET
AIR INTAKE
ACTUATOR
AIR INTAKE
DOOR
BLOWER MOTOR
HEATER CORE
EVAPORATOR
TEMPERATURE
SENSOR
AIR MIX
DAMPER
EVAPORATOR
EXPANSION VALVE
E5U711ZS5005
BLOWER MOTOR BLOWER MOTOR
[HOT]
[COLD]
AIR MIX DAMPER EVAPORATOR EVAPORATORAIR MIX DAMPER
HEATER COREHEATER CORE
E5U711ZS5006