1990 MITSUBISHI SPYDER engine

HEATER, AIR
AND VENTILATION On-vehicle Service
IDLE-UP OPERATION CHECK
1,Before inspection and adjustment, set the f&w-
ing condition:
lEngine coolant temperature:
lLights, electric cooling fan and accessories: Set t o
OFF
lTransmission: Neutral (N or for vehicles with
l Steering wheel:
2. Check whether or not the idling speed is the sta ndard
value.
Blower relay
Standard value:
100
Engine (Turbo) and Engine>
100 Engine (Non-turbo)>
3. When the
is running after turning the A/C switch
to ON, and the blower switch to the MH or HI positi on,
check to be sure that the idle speed is at the stan dard
value.
Standard value: (in Neutral)
NOTE
Idle speed is controlled by the system and is not
adjustable. If, idle speed is not within specifications, check
the system.
Engine (Non-turbo)>: Refer to GROUP On-
vehicle Service.)
Engine (Turbo)>: Refer to GROUP On-vehicle
Service.)
Engine>: Refer to GROUP On-vehicle Ser-
vice.)
POWER RELAY CHECK
BLOWER MOTOR RELAY CHECK
Battery voltage Terminal No.III
1235
Power is not supplied
Power is supplied0 0
0 0

Engine (Turbo)>HEATER,
AIRAND VENTILATION On-vehicle Service
A/C COMPRESSOR CLUTCH RELAY, CONDENSER FAN
RELAY (LO) AND (HI) CONTINUITY CHECK
Batteryvoltage Terminal No.
13 45
Power is not supplied0
Engine (Non-turbo)>
Condenser
fan relay (LO)
Engine>
NC
clutch relay
ment relay box
Power is supplied0
TSB Revision

HEATER, AIR
AND VENTILATION Cooling Unit
COOLING UNIT
REMOVAL AND INSTALLATION
and Post-installation OperationRefrigerant Discharging and Charging(Refer to
CAUTIONPlug refrigerant lines to prevent air from mixingwhen disconnecting them.
Compressor oil:
SUN PAG 56
6
0 0 0 0 3 6 3 4
Removal steps
1. Drain hose2. Suction pipe Engine
turbo)> or suction hose gine (Turbo) and Engine>connection3. Liquid pipe connection4. O-ring5. Stopper
6. Glove box7. Corner panel
8. Glove box under frame
9. Console side cover
10. Control unit cover11. ABS-ECU bracket12. Harness protector Engine
(Turbo) and Engine> 1 3 . 14. Cooling unit
TSB Revision

HEATER, AIR
AND VENTILATION Cooling Unit
Grommet
Pin
REMOVAL SERVICE POINT
R E M O V A L
(1) Use a Philips-head screwdriver to push inward t he pin
(at the center of the clip) to a depth of about 2 m m
in.).
(2) Pull the clip outward to remove it.
Caution
Do not push the pin inward more than necessary be-
cause it may damage ‘the or the pin may
fall in, if pushed too far.
INSTALLATION
U N I T
When replacing the cooling unit with new refill evapo-
rator with a specified amount of compressor oil.
Engine -(Turbo) and Engine>
Compressor oil: SUN PAG 56
Quantity: 60
(2.03
Engine (Non-turbo)>
Compressor oil:ND-OIL 8
Quantity: 40
(1.35
CLIP INSTALLATION
(1) With the pin pulled out, insert clip into the hole.
(2) Push the pin inward until the pin’s head
flush with
the grommet.
TSB Revision

HEATER, AIR
AND VENTILATION Cooling Unit
DISASSEMBLY AND REASSEMBLY5 5 2 0 1 0 6 0 0 2 6
7
oil:
SUN PAG 56
Engine
(Turbo) and Engine>
ND-OIL 6
Engine
(Non-turbo)>
0 0 0 0 3 6 3 5
Disassembly steps
1. Clip
2. Evaporator case (upper)
3. Fin sensor Engine (Non-turbo)>
4. Automatic compressor-ECM and fin
sensor assembly En-
gine (Turbo) and Engine> 5. Evaporator case (lower)
6. Expansion valve
7. O-ring
8. Evaporator
Resis-
tance
1 02030 40(14) (50) (68) (86) Temperature
INSPECTION
FIN SENSOR RESISTANCE CHECK
When the resistance value between the sensor termin als
is measured under two or more temperature condition s, the
resistance value should be close to the values show n in the
graph.
NOTE
Thetemperature conditions when testing should not exceed
the range of the characteristic curve in the graph.
TSB Revision
DISASSEMBLY SERVICE POINT
CLIP REMOVAL
Remove the clips with a flat-tipped screwdriver cov ered with
a shop towel to prevent damage to case surfaces.

HEATER, AIR Compressor
AND VENTILATION Engine (Turbo) and Engine%
COMPRESSOR AND TENSION PULLEY
ENGINE (TURBO) AND ENGINE>
REMOVAL AND INSTALLATION
and Post-installation OperationRefrigerant Discharging and Charging(Refer to For drive belt adjustment, refer to thefollowings:GROUP On-vehicle Service.
GROUP On-vehicle Service.
CAUTIONPlug refrigerant lines to prevent air from when disconnecting them.II
23-26Nm
Hose connection,
Compressor SUN FAG 56
23-26 Nm23-26Nm
Tension pulley and tension pulley bracket removal steps
1. Brake fluid reservoir
2. Compressor drive belt
3. Cover
4. Tension pulley 5. Tension pulley bracket
Compressor and compressor
bracket removal steps
1. Brake fluid reservoir
2. Compressor drive belt
6. Compressor connector7. Discharge hose connection
8. Suction hose connection
9. O-ring 10. Compressor 11. pulley and tension pulleybracket assembly
12. Comoressor bracket
TSB Revision

HEATER, AIR
AND VENTILATIONCompressor’ and Pulley Engine (Turbo) and
INSTALLATION
COMPRESSOR INSTALLATION
If a new compressor is installed, first adjust the amount of
oil according to the procedures described below, an d then
install the compressor.
(1)Measure the amount (x of oil within the
removed compressor.
(2) Drain (from the new compressor) the amount of o il calcu-
lated according to the following formula, and then install
then new compressor.
New compressor oil amount
170
(1) (y indicates the amount of oil in the
refrigerant line, the condenser, the evaporator
. .
R E M O V A L S E R V I C E P O I N T S
FLUID
Disconnect the brake fluid level sensor connector a nd, remove
the brake fluid reservoir from the compressor
the hose still attached.
NOTE
Place the removed brake fluid reservoir in where
it will not be a hindrance when removing and instal ling the
A/C compressor, and tie it
cord.
COMPRESSOR DRIVE BELT REMOVAL
(1) Loosen bolt “A” for holding the tension pulley.
(2) Loosen bolt
for adjustment.
(3) Remove the compressor drive belt.
COMPRESSOR
When doing this work, be careful not to spill the c ompressor
oil.
TSB Revision

HEATER, AIR Compressor
AND VENTILATION Engine (Turbo) and
When the following’ parts as
compressor, subtract the rated oil amount of the each
part from discharge from the new
compressor.
Quantity
Evaporator: 60 (2.03
Condenser: 15
Suction hose: 10
Receiver: 10
INSPECTION55200420047
lChecking for heat damage of the tension pulley.
lCheck for excessive play or deflection of the tensi on pulley.
lCheck for unusual wear of the tension pulley.
Check for hardening of the compressor drive belt.
lCheck for unusual wear or abrasion of the compresso r
drive belt.
TSB Revision