Page 34 of 241

GENERAL DESCRIPTION
HEATER, AIR CONDITIONING AND VENTILATION55-2
GENERAL DESCRIPTIONM2551001500040
The blower, heater, and evaporator have been inte-
grated with the heater and A/C system to achieve a
greater fan power and noise reduction.
FEATURES
.
ENHANCEMENTS IN COMFORT
•With the adoption of fully-automatic A/C, the out-
side/inside air circulation switching, air outlet, and
outlet air temperature are automatically con
-
trolled according to the ambient temperature,
solar radiation, and passenger compartment tem
-
perature so that the optimum air conditioner is
achieved.
•By the adoption of clean air filter, the air quality
inside the passenger compartment has been
enhanced.
.
ENHANCEMENTS IN OPERATION
PERFORMANCE
•Operability has been enhanced by the adoption
of large triple dial.
•Customise function has been added for the
enhanced convenience.
.
ENHANCEMENTS IN FUEL ECONOMY
•The high efficiency compressor with a 2-step pro-
file oil separator has been installed, thus enhanc-
ing the fuel economy.
•The idle-up speed is controlled in two steps to
secure the air cooling performance during sum
-
mer and to enhance the fuel economy in the sea-
sons with moderate temperature.
•Enhancement of fuel economy by the cooling fan
control depending on the refrigerant pressure and
vehicle speed.
.
ENHANCEMENT IN SAFETY
•A/C system is stopped when the air bags are
deployed.
•Crushable space has been adopted to heater unit
to reduce the risk of passenger injuries in case of
a collision.
.
GLOBAL ENVIRONMENT PROTECTION
•New refrigerant system (HFC134a) has been
adopted.
•By the optimisation of A/C system, the refrigerant
charging amount has been reduced.
•Clean air filter media and its cover are separated
to reduce waste materials.
.
ENHANCEMENTS IN SERVICE QUALITY
•Reduction of refrigerant gas leakage and
enhancement in serviceability by incorporating
condenser and receiver
•Clean air filter is installed to the backside of glove
box to facilitate the filter replacement.
.
ENHANCEMENTS IN RESPONSIBILITY
Reliable information transmission is achieved by
connecting A/C-ECU and each ECU via CAN com
-
munication.
SPECIFICATIONS
ITEMSPECIFICATION
Air conditioning switch typeRotary type
Compressor typeMSC90CAS
Cooling output5.5 kw
Heating output5.7 kw
RefrigerantTy p eR134a (HFC-134a)
Charge quantity g (oz.)480 - 520 (16.9 - 18.3)
Page 37 of 241

HEATER AND AIR CONDITIONING SYSTEM
HEATER, AIR CONDITIONING AND VENTILATION55-5
The following new unit integrated blower, heater and
evaporator to increase the air flow, reduce noise, and
enhanced cooler and heater performance;:
•Integrated heater/cooling unit has been adopted
for large air flows and low noise.
•Crushable space has been secured to reduce the
risk of passenger injuries.
•Air mix damper that is also used as a reheating
prevention damper has been adopted to enhance
the air cooling performance.
•The A/C condensate water outlet (drain port) has
been installed to behind the evaporator to
restrain the clogging of drain by foreign materials.
•The outlet air temperature of the defroster has
been set lower than that of foot to prevent over
-
heating the driver’s face.
•Fin thermo sensor to directly measure evaporator
temperature reduces occurrence risk of an evap
-
orator freeze which will lead to the compressor
lock.
•Clean air filter has been introduced as standard
to protect the unit from the intrusion of foreign
materials (fallen leaves and others). and, it
removes the pollen and dust, and enhances the
air quality inside the passenger compartment.
•Clean air filter media and cover have been sepa-
rated to reduce the waste material amount gener-
ated during the filter replacement.
•The installation position of clean air filter has
been set to the backside of glove box to facilitate
the filter replacement operation. And, the
one-touch tab structure has been adopted for the
cover installation to enable the replacement oper
-
ation without tools.
OPERATION
.
CRUSHABLE SPACE
The evaporator and heater core has been longitudi-
nally installed in the vehicle length, and the crush-
able space has been adopted so that the structure
absorbs the impact in case of a collision and reduces
the risk of passenger injuries.
AC506490AB Front defroster
Side defrosterSide defrosterSide
outlet
Side
outlet Center
outlet
Heater core
Heater outlet
to compartment Recirculation
Fresh
Clean air filter
Blower motor
EvaporatorHeater outlet
AC506491
Crushable space
Crushable space
Front side
Drain port EvaporatorHeater coreAB
Page 42 of 241
DUCT
HEATER, AIR CONDITIONING AND VENTILATION55-10
DUCTM2551001300358
The rear heater duct has been introduced, and the
air distribution ratio to front and rear seats has been
optimised in order to enhance the air heating perfor
-
mance for the rear seats, and to prevent the circula-
tion of cooled air back to the front seats.
with rear duct>
AC608058
To front door window
(Side defroster)
Side ventilator
Center ventilatorTo windshield (Defroster)
To front door window
(Side defroster)
To passenger seat footwell
To driver seat footwell
To rear seat footwell
(Vehicle with rear duct)
To rear seat footwell
(Vehicle with rear duct)
Side ventilator
AB