Purpose
The heater core heats passing air.
Function
A portion of the engine coolant is taken into the heater core to heat the air passing through the heater core.

Construction
The heater core consists of a tube which passes engine coolant, and the heat radiation fin.

Operation
The engine coolant warmed by the engine heat is sent to the heater core.
The air blown by the blower motor is warmed up by heat exchange when it passes through the heat radiation fin of the heater core.

Fail-safe
Function not equipped.
Heated Oxygen Sensor (HO2 S) Heater Control [Skyactiv G 2.0]
Heater Core InspectionService Publications
Service Publications
Factory-authorized Mazda service publications are available for owners who wish
to do some of their own maintenance and repair.
When requesting any of our publications through an Authorized Mazda Dealer, refer
to the chart below.
If they do not have what you need in stock ...
Room Straight Line Dimensions (1) [Dimensions]
Point symbol
Designation
Hole diameter or bolt or nut size mm {in}
A
Front pillar inner datum hole
?7 {0.3}
B
Front pillar inner datum hole
?7 {0.3}
C
...
Evaporator
Purpose
The evaporator cools the passing air.
Function
The evaporator vaporizes the atomized refrigerant flowing internally, and
the air passing through the evaporator is cooled by the release of latent heat.
The moisture in the air is condensed at this time and dehumidifie ...