1990 MITSUBISHI SPYDER air conditioning

BASIC BRAKE SYSTEM Master Cylinder and Brake Booster
MASTER CYLINDER AND BRAKEBOOSTER
REMOVAL AND INSTALLATION
Pre-removal Operationl
Brake Fluid Draining
l Clutch Fluid Reservoir Bracket
(Refer to GROUP Clutch Control.)
l Battery Removal Engine (Non-turbo)>
l Relay Assembly Mounting Bolts Removal
Engine (Non-turbo)>
lWasher Tank Bolts Removal (Non-turbo)>lCentermember Assemblv Bolts Removal Engine (Turbo) arid Engine> (Refer toGROUP 32 Engine Roll Stopper, Centermember.)l Engine Mount Bracket Removal Engine
(Turbo) and Engine> (Refer to GROUP 32 Engine Mounting.)l Air Conditioning Compressor Mounting Bolts
Removal Engine (Turbo) and Engine>
(Refer to GROUP 55 Compressor and TensionPulley.)l Air Conditioning High Pressure Hose ClampMounting Bolts Engine (Turbo) and Engine>
l Power Steering Pressure Hose, Pipe and Return
Pipe Clamp Mounting Bolts Removal Engine and
I GROUP Power Steering Hoses.)
Flared brake line nuts
15 Nm11
Post-installation OperationlPower Steering Pressure Hose, Pipe and Pipe Clamp Mounting Bolts Installation Engine(Turbo) and Engine>
(Refer to GROUP Power Hoses.]
l Air Conditioning High Pressure Hose Clamp
Mounting Bolts
Engine and Engine>
l A i r C o n d i t i o n i n g C o m p r e s s o r
Installation Engine (Turbo) and ngines
(Refer to GROUP 55 Compressor and TensionPulley.)l Engine Mount Bracket Installation Engine(Turbo) and Engine> (Refer to GROUP 32 Engine Mounting.)lCentermember Assembly Mounting Bolts Installation Engine (Turbo) and Engine> (Refer toGROUP 32 Engine Roll Stopper Centermember.)l Washer Tank Mounting Installation Engine (Non-turbo)>l
Relay Assembly Mounting Bolts Installation Engine (Non-turbo)>l Battery Engine (Non-turbo)>
l Clutch Fluid Reservoir Bracket
(Refer to GROUP Clutch Control.)
l Brake Fluid Supplying
l Brake Line Bleeding (Refer to
l
Brake Pedal Adjustment (Refer to
I
10 Nm714 Nin10
Master cylinder removal steps
2. Master cylinder1.
Reservoir
l Adjustment of clearance between
brake booster push rod and primary
piston
CautionThe check valve should not be removed from the vacu umhose. If the check valve isdefective, replace it together
with the vacuum hose. Brake
booster removal steps
l Adjustment of clearance between
2. Master cylinder
brake booster push rod and
3. hose (With built-in check
4. Fittina 5.
pedal return spring
6. Snap pin
7.
8. pin
9. Brake booster
10. Sealerl b
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STEERING Power Steering Oil Pump
INSTALLATION POINT
OIL PUMP ASSEMBLY
‘For the with air conditioning, install the oil pump
assembly to the bracket so that it faces toward
vehicle
front. Then use the air coriditioning tension
adjust
the belt tension..
37300530043
Check the drive-belt for cracks
Check the pulley, assembly for uneven rotation.
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SRS General Information.
CIRCUIT DIAGRAM
CAUTION
1.Do not repair, splice or modify SRS wiring (except for specific repairs to the body harness
shown on page
replace wiring if necessary, after reading and fol lowing all precautions
and procedures in this manual.
2.Do not use an analog ohmmeter to check wiring or components; use only special tools
(refer to
and digital multi-meter (refer to
IGNITION
23
I
25
13
CONDITIONING AUTO-CRUISECONTROL SYSTEM CHARGING SYSTEM . COOLING SYSTEM
. IGNIT. METER. MFI
ELC AUTOMATIC TRANSAXLE ION SYSTEMAND GAUGES
14
COMBINATIONMETER
. AUTO-CRUISECONTROL SYSTEM SEAT BELTWARNING BUZZER WINDOWDEFOGGER
C. C.POWER SOURCE CIRCUITCONVERTERWATCH-DOG CIRUIT WARNING LIGHT,
DRIVE CIRCUIT ANALOG SENSOR
I IIIBACK-UP
CAPACITORMICROPROCESSORI
AIR BAG DRIVE CIRCUIT
SAG DRIVE CIRCUIT IIIAA
5 6 8
7
2CLOCKSPRINGI
BR2 21
R e m a r k s
n e .AIR BAG AIR BAG MODULE (DRIVER'S SIDE) (PASSENGER'S SIDE)
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CONTENTS
AIR CONDITIONING SWITCH . . . . . . . . . . . . . . 23
LUBRICANTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
BLOWER ASSEMBLY AND RESISTOR*
. . . .26
COMPRESSOR AND TENSION PULLEY
ENGINE (NON-TURBO)>.. . . . . . . . . . . .38
COMPRESSOR AND TENSION PULLEY
ENGINE (TURBO) AND ENGINE>
ON-VEHICLE SERVICE. . . . . . . . . . . . . . . . . . . . .8
Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Compressor Noise Check. . . . . . . . . . . . . . . . . . . .16
Compressor Drive Belt Adjustment . . . . . . . . . . . .9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31Dual Pressure Switch Check. . . . . . . . . . . . . . . . . .9
Handling Tubing and Fittings. . . . . . . . . . . . . . . . .15
CONDENSER AND CONDENSER
46Idle-up Operation Check. . . . . . . . . . . . . . . . . . . . .17FAN MOTOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Magnetic Clutch Test. . . . . . . . . . . . . . . . . . . . . . . . .9
COOLING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
GENERAL INFORMATION3. . . . . . . . . . . . . . . . . .
Performance Test. . . . . . . . . . . . . . . . . . . . . . . . . . .14
Power Relay Check . . . . . . . . . . . . . . . . . . . . . . . . .17
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . .4Receiver Drier Test. . . . . . . . . . . . . . . . . . . . . . . . . .9
. . . . . . . . . . . . . . . . . . . . .15HEATER CONTROL ASSEMBLY*19Refrigerant Leak Repair. . . . . . . . . .
Sight Glass Refrigerant Level Test . . . . . . . . . . . .8
HEATER UNIT AND HEATER CORE*. . . . . . . 24CONTINUED ON NEXT PAGE
WARNINGS REGARDING SERVICING OF SUPPLEMENTAL RESTRA
INT SYSTEM (SRS) EQUIPPED VEHICLES
WARNING!
(1)
improperservice or maintenance of any component of the SRS, or any SRS-related component, can lead to
the SRS inoperative).
(2) Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized
MITSUBISHI dealer.
(3)MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP Supplemental straint System (SRS) and GROUP 00 Maintenance Service before beginning any service or maintenance of any com-
ponent of the SRS or any SRS-related component.
N O T EThe SRS includes the following components: SRS ECU, SRS warning light, air bag module, clocksprin g and interconnecting wiring.Other components (that may have to be removed/installed in connection with SRS service or maintenance) are indi-
cated in the table of contents by an asterisk(*).

HEATER, AIR
AND VENTILATION General Information
GENERAL INFORMATION
The heater system uses a two-way-flow full-air-mixThe A/C system is basically the same as the
system that features high performance and lowtional system, but a new refrigerant system
operating noise, and includes an independent facebeen adopted as a response to
air blowing function and a air bypass function.use of chlorofluorocarbons. ,
Specifications
Heater unit type Two-way-flow full-air-mix system
Heater
controlassembly Dial and lever type
Compressor model
Engine (Turbo) and Scroll type
Engine>
Engine (Non-turbo)>Inclined-plate type
Dual pressure switch (psi)High-pressure switch OFF: 3,140 ON: 2,550 (370)
Low-pressureswitchOFF: 200 ON: 220 (32)
Refrigerant and quantity
(oz.) Approx. 700 740
OPERATION
Condenser fan and radiator fan control
lFor the operation of each fan, refer to COOLING
SYSTEM TROUBLESHOOTING.
Compressor control
lWhen 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.
l 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 coolant,
it is turned off at or higher
peratures.
lThe dual pressure switch turns OFF when
refrigerant pressure becomes high
or low, thus the compressor circuit.
(See Table below.)
A/C ON Conditions
Ignition switch
Blower switch
ON
ON Remarks
compressor relay is deenergized when
anv one switch, sensor or control unit shown
l marked device measures the temper-
ature of the intake air, and according to the
magnetic clutch
for the compressor, the auto
ECU outputs the “HI” signal
sensor
DualLow-pressure side ON (32 psi) or
pressure
higher]
switch side ON (370 psi) or
lower]
compressor relay driving
transistor (within auto com-
pressor-ECU)ON
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HEATER, AIR
AND VENTILATION Troubleshooting
TROUBLESHOOTING
PROCEDURES
Trouble
symptom
When the ignitior
switch is “ON”,
the
does not
operate.
conditioning
does not
when
he air outlet
knob is
noved to the
or
position. Problem cause
compressor clutch relay
is defective
Magnetic clutch is defective
Refrigerant leak or overfilling
of refrigerant
Dual pressure switch is defec-
tive
A/C switch is defective Blower switch is defective
Fin
sensor is defective
Refrigerant temperature switch
is defective
Engine (Tur-
bo) and
Engine>
Automatic compressor-ECM
is defective
Revolution pick up sensor is
defective
Engine (Non-turbo)>
A/C compressor relay is de-
fective
1
Dual pressure switch is defec-
tive
Defroster switch is defective
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Magnetic clutch is defective
Refrigerant leak or overfilling
of refrigerant Remedy
Reference ReferencepagepageEngine
Engine(Non-turbo) (Turbo) Engine
Replace A/C compressor clutch 55-1855-18
relay
Replace the armature plate, rotor55-34
or clutch coil
Replenish the refrigerant, repair
0
the leak or take out some of therefrigerant
Replace the dual pressure switch 55-45
Replace the A/C switch 55-2355-23
Replace the blower switch55-22 55-22
Replace the fin sensor
Replace the refrigerant tempera-
ture switch
Replace the automatic
Replace the revolution pick up
sensor
55-26
Replace A/C compressor clutch55-18
relay
Replace the armature plate, rotor55-34
or clutch coil
Replenish the refrigerant, repair
the leak or take out some of the
refrigerant
Replace the dual pressure switch55-45
the defroster switch55-22 55-22
the blower switch55-225 5 - 2 2
temperature Replace the refrigerant tempera-
is defective
ture switch
compressor-ECU isReplace the automatic 55-26
sor-ECU
pick up sensor is
Replace the revolution pick up
sensor Engine

55-22HEATER, AIR
AND Heater Control
DISASSEMBLY AND REASSEMBLY
damper cable
Disassembly steps
1.Knob2.Lever assembly3. Air conditioning switch
4.Knob assembly5. Bulb and socket assembly6.Defroster switch7. Air outlet changeover damper ca-
ble8. Air mix damper cable
9. Inside/outside air changeover10. Control base assembly
11. Knob assembly A
12.Panel case
13.Nut14.Control base15.Blower switch
NOTE
Parts from No. 11 to No. 14 are not supplied as sin gle
parts.
DISASSEMBLY SERVICE POINT
AIR OUTLET CHANGEOVER DAMPER
CABLE/AIR MIXING DAMPER CABLE/INSIDE/OUTSIDE AIR CHANGEOVER DAMPER
CABLE REMOVAL
a flat-tipped screwdriver to disengage the claws, and
then remove the cables.

HEATER, AIR
AND VENTILATION Air Conditioning Switch
AIR CONDITIONING SWITCH
REMOVAL AND INSTALLATION
Removal steps
1. Stopper 2. Center air outlet3. Center panel4. Air conditioning switch
indicates sheet metal clip positions.
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INSTALLATION POINT
CENTER AIR OUTLET INSTALLATION
(1)Turn the cool air bypass lever of the center air outlet
fully downward.
(2) Pull the cool air bypass damper lever on the he ater unit
side all the way toward you, and then connect the c able
to the lever pin.
(3) Push the outer cable in the direction of the ar row so
that there is no looseness, and then secure it with the
clip.
INSPECTION
AIR CONDITIONING SWITCH CONTINUITY CHECK