1990 MITSUBISHI SPYDER refrigerant type

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
TSB Revision

INTRODUCTION . . . . . . . . . . . . . . . .
6ALPHABETICAL INDEX
KEY INTERLOCK MECHANISM
Check ENGINE (NON-TURBO)> . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE> .
ENTRY SYSTEM . . . . . . . . . . . . . . . . . . . .
SERVO
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
Adjustment ENGINE (TURBO) AND ENGINE> . . . . . . . . . . . . . . . .
KNOCK SENSOR
ENGINE (NON-TURBO)> . . . . . . . . . . . . ENGINE (TURBO)> . . . . . . . . . . . . . . . . . . , .
KNUCKLE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
LASH ADJUSTER
Check
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replacement. . . . . . . . . . . . . . . . . . . . . . . . . .LATCH, Door. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LATERAL LOWER ARM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LEAK, Refrigerant, Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LEVEL
Transfer Oil, Check ENGINE (TURBO) AND ENGINE>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Transaxle Fluid, Check ENGINE (NON-TURBO)> . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE>.. . . .LEVER Parking Brake
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Parking Brake, Stroke Check. . . . . . . . . . . . . . . . . . . . . . . . . .Selector, Operation Check ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . ENGINE (TURBO) AND ENGINE>.. . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GLASS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LIGHT
Back-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Side-marker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Front Turn-signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .High-mounted Stop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Interior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Rear Combination. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LIMITED SLIP DIFFERENTIAL (VCU TYPE) CONDITION,Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LINE PRESSURE, Adjustment ENGINE (TURBO)
AND ENGINE>. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .LINING
Brake, Thickness Check
. . . . . . . . . . . . . . . . . . . . . . . . . . .Drum Brake, Rear, Maintenance. . . . . . . . . . . . . . . . . . . . . .Running-in. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LOWER ARM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LOW-REVERSE BRAKE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LSD CASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LUMINOUS INTENSITY, Measurement. . . . . . . . . . . . . . . . . .
MAGNETIC CLUTCH, Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MAIN MUFFLER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MANIFOLD
ENGINE (NON-TURBO)>. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .11 ENGINE (TURBO)>. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ENGINE>. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Intake ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ENGINE (TURBO)>. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ENGINE>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Intake, Vacuum Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Vacuum Check . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .MANUAL TRANSAXLE OIL, Maintenance. . . . . . . . . . . . . . . .MASTER CYLINDER
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .METERS, Combination. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MIRRORDoor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Rear View, Inside. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MIXTURE
Idle, Check
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MODULE, Fuel Pump ENGINE>. . . . . . . . . .MOLDINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MOTORIdle Air Control (DC Motor), On-vehicle Inspection ENGINE>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Idle Air Control (Stepper Motor ENGINE (NON-TUROn-vehicle Inspection. . . . . . . . . . . . . . . . ENGINE (TURBO)>. . . . . . . . . . . . . . . . . . . . .Starter ENGINE (NON-TURBO)>. . . . . . . . . . . . . . ENGINE (TURBO) AND ENGINE> . .MOUNTING
Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Transaxle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MUFFLER, Main. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FUEL INJECTION (MFI) RELAY (ASD RELAY)
On-vehicle Inspection ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . ENGINE (TURBO) AND ENGINE>.. . .
0
OIL Engine, Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine, Replacement . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . Gear,. . . . . . . . . . . . . . . . . . . . . Manual. . . . . . . . . . . . . . . . . . . . . Rear Axle, Maintenance
Temperature Sensor Continuity, Check . . . . . . . .
Transaxle, Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transaxle, Replacement ENGINE (NON-TURBO)> . . . . . . . . . . . . ENGINE (TURBO) AND ENGINE>Transfer, Maintenance. . . . . . . . . . . . . . . . . . . . .
.. . .. .