Mitsubishi Eclipse 1990 Service Manual page 2043

GENERAL INFORMATION
The heater system uses a two-way-flow full-air-mix
system that features high performance and low
operating noise, and includes an independent face
air blowing function and a
Heater unit type
Heater assembly
control
Compressor model
Dual pressure switch
Refrigerant and quantity
OPERATION
Condenser fan and radiator fan control
For the operation of each fan, refer to COOLING
SYSTEM TROUBLESHOOTING.
Compressor control
When the air conditioning switch is pushed in
(A/C switch: ON) or the air outlet changeover
control knob is moved to the DEF or
position (defroster switch: ON), the air
conditioning system operates and compressor
control starts.
A/C ON Conditions
Ignition switch
Blower switch
sensor
Dual Low-pressure side
pressure
switch
compressor relay driving
transistor (within auto com-
pressor-ECU)
HEATER, AIR
AND VENTILATION
air bypass function.
Engine (Turbo) and
Engine>
Engine (Non-turbo)>
(psi)
High-pressure switch
Low-pressure
switch
(oz.)
ON
ON
ON (32 psi) or
higher]
side ON (370 psi) or
lower]
ON
TSB Revision
General Information
The A/C system is basically the same as the
tional system, but a new refrigerant system
been adopted as a response to
use of chlorofluorocarbons.
Specifications
Two-way-flow full-air-mix system
Dial and lever type
Scroll type
Inclined-plate type
OFF: 3,140 ON: 2,550 (370)
OFF: 200 ON: 220 (32)
Approx. 700
The fin sensor, which senses the
temperature. of the air flowing out of the
evaporator, is deactivated with. temperature
3.2% or below.
Here, the engine coolant 'temperature sensor
senses the temperature of
it is turned off at
peratures.
The dual pressure switch turns OFF when
refrigerant pressure becomes
or low, thus
(See Table below.)
Remarks
compressor relay is deenergized when
anv one switch, sensor or control unit shown
marked device measures the temper-
ature of the intake air, and according to the
for the compressor, the auto
ECU outputs the "HI" signal
,
740
coolant,
or higher
high
the compressor circuit.
magnetic clutch