Mitsubishi Evolution X. Manual - part 71

GENERAL DESCRIPTION

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55-4

AC708612

A/C-ECU

A/C control panel

GENERAL DESCRIPTION

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55-5

COMMUNICATION

AC705259

A/C pressure sensor

Interior temperature sensor

Photo sensor

A/C-ECU

Fin thermo sensor

Outside/Inside air selection 
damper control motor

Air mixing damper 
control motor

Mode selection damper 
control motor

Blower motor

Power transistor

A/C control panel

Combination meter

ETACS-ECU

Engine-ECU

SRS-ECU

: Interactive communication

CAN communication

SERIAL communication

AB

Ambient air 
temperature sensor

HEATER AND AIR CONDITIONING SYSTEM

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55-6

HEATER AND AIR CONDITIONING SYSTEM

M2551001000669

HEATER UNIT ASSEMBLY

AC607858

Blower motor

Outside / inside air selection
damper control motor

Air mixing damper control
motor

Air thermo sensor

AB

Mode selection 
damper  control motor

A/C-ECU

Power transistor

Intake duct

Blower case

AC607857

Heater unit

Air mixing damper

Heater core

Evaporator

Mode selection damper

Outside / inside air 
selection damper

AB

Intake duct

Blower case

Clean air filter

HEATER AND AIR CONDITIONING SYSTEM

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55-7

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 and reduces the risk of passen-
ger injuries, if a collision occurred.

AC506490

AB

Front defroster

Side defroster

Side defroster

Side 
outlet

Side 
outlet

Center
outlet

Heater core

Heater outlet 
to compartment

Recirculation

Fresh

Clean air filter

Blower motor

Evaporator

Heater outlet

AC506491

Crushable space

Crushable space

Front side

Drain port

Evaporator

Heater core

AB