heater MITSUBISHI MONTERO 1987 1.G Owner's Guide

HEATERS - Heater Unit 24-13
2. REMOVAL OF INSTRUMENT PANEL
Refer to GROUP 23 BODY-Instrument Panel.
INSPEGTION N24cAa
l
Check the damper and link mechanism for operation.
l Check the heater core for clogging or water leakage.
l Check the water valve for operation and clogging.
EATER CORE REPLACEMENT
I. Remove the water valve cover.
2. Remove the following parts to remove the water valve.
(1) Piping clamp
(2) Water valve link
(3) Joint hose clamp
(4) Joint hose
(5) Screw
3. Remove the FOOT/DEF damper link from the mode
selection damper lever.
4. Move the damper lever to the position at which the mode
selection damper lever does not protrude very much to the
heater core side.
5. Remove the heater core. If at this time the damper lever
and heater core are in contact, making removal difficult,
remove the damper lever.
Caution
To prevent interference between the heater
core and
case, use care not to peel the heater
core felt away
when the heater core is removed.
6. After installing the heater core and water valve, install the
link for each damper after referring to the “Service
adjustment procedures” section.
SERWOCE POINTS OF INSTALLATION
2. INSTALLATION OF INSTRUMENT PANEL
Refer to GROUP 23 BODY-Instrument Panel.
N241EAD
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24-14 HEATERS + Blower Assembly
BLOWER ASSEMBLY
REMOVAL AND INSTALLATION NXKA-
Removal steps
1. Lap heater duct (C)
+* 2. Glove box
+e l + 3. Air selection control wire
4. Duct
4* 5. Blower assembly
6. Resistor
7. Hose
8. Blower motor
9. Packing
10. Fan
2oWBO6
6
NOTE
(1) Reverse the removal procedures to relnstall. (2) l * : Refer to “Service Points of Removal”.
(3) l * : Refer to “Service Points of Installation”.
SERVICE POINTS OF REMOVAL N24KBAE
2. REMOVAL OF GLOVE BOX
(1) Open the glove box lid.
(2) Remove the glove box stopper.
(3) Remove the glove box from the hinge.
3. REMOVAL OF AIR SELECTION CONTROL WIRE
(1) Use a screwdriver to pry and remove the clip that holds
the outer cable of the air selection control wire.
(2) Disconnect the inner cable of the air selection control
wire from the end of the air selection damper lever.

HEATERS - Blower Assembly 24-15
--I
Front wirina harness
d
!
2OW537
2OW768
2OW779
5. REMOVAL OF BLOWER ASSEMBLY (1) Disconnect the connector of the front wiring harness
(connected to the resistor).
(2) Remove the ground installation bolt. (Tightened togeth-
er with the blower assembly.)
(3) Remove the blower assembly installation bolt.
INSPECT00 N24KCAD
RESISTOR Connect an ohmmeter to each terminal of the resistor and
measure the resistance.
Terminal connections
1 -2(M1)
1 -3(M2) I-4(Low)
1 - 5 (High)
BLOWER MOTOR Resistance
Approx. 1.22R
Approx. 0.41 R
Approx. 2.25112
Approx. OlR
(1) Connect the blower motor terminals directly to the battery
and check that the blower motor operates smoothly.
(2) Next, reverse the polarity and check that the blower motor
operates smoothly in the reverse direction.
SERVICE POINTS OF INSTALLATION N24KDAC
3. INSTALLATION OF AIR SELECTION CONTROL WIRE Connect the air selection control wire to the air selection
damper lever by following the steps below.
(1) Move the air selection control lever to the& position.
(2) With the air selection damper lever pressed inward in
the direction indicated by the arrow, connect the inner
cable of the air selection control wire to the end of the
air selection damper lever, and then secure the outer
cable by using a clip.
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24-16 HEATER? - Ventilators
VENTILATORS
REMOVAL AND INSTALLATON (Ventilators of instrument panel) N24MA-
‘16
zowaa I4
Removal steps
1. Demister grill
2. Lap heater garnish
3. Lap heater duct (B)
4. Lap heater duct (C)
5. Defroster duct (L.H.)
6. Lap heater duct (A)
7. Defroster duct (R.H.)
8. Air duct (R.H.) (Only vehicles with air
conditioner)
9. Lap heater duct (A)
10. Air duct (L.H.) (Only vehicles with air
conditioner) 11. Instrument panel
12. Defroster duct
13. Center ventilator duct
14. Center air outlet
15. Knob
16. Air duct
17. Side air outlet
NOTE
(1) Reverse the removal procedures to reinstall.
(2) +e : Refer to “Service Points of Removal”
SERVICE POINTS OF REMOVAL N24MBAG
1. REMOVAL OF DEMISTER GRILL
While using a screwdriver to pry the lock of the demister
grill, use another screwdriver to pry the end of the
demister grill to remove it.
levision

HEATERS - Ventilators 24-17
2OW75l
2OW759
2. REMOVAL OF LAP HEATER GARNISH
While using a screwdriver to pry the lock of the lap heater
garnish, use another screwdriver to pry the end of the lap
heater garnish to remove it.
6. REMOVAL OF LAP HEATER DUCT (A)
Remove the screw at the side of the instrument panel, and
then remove the lap heater duct (A).
7. REMOVAL OF DEFROSTER DUCT (R.H.)/8. AIR DUCT
(R.H.)
(1) Open the glove box lid.
(2) Remove the glove box stopper.
(3) Pull the glove box outward.
(4) Remove the defroster duct (R.H’.)
(5) Remove the air duct (R.H.)
9. REMOVAL OF LAP HEATER DUCT (A)
(1) Remove the center panel. (Refer to GROUP 23 BODY -
Floor console)
(2) Remove the heater control assembly. (Refer to P.24-9)
(3) Insert a hand through the heater control assembly
installation hole in the instrument panel, and remove
the installation screw of the lap heater duct (A).
1 STB Revision 10. REMOVAL OF AIR DUCT (L.H.)
(1) Remove the combination meter. (Refer to GROUP 8 HI
ELECTRICAL-Meters and Gauges)
(2) Remove the air duct (L.H.).
11. REMOVAL OF INSTRUMENT PANEL
Refer to GROUP 23 BODY-Instrument Panel.

24-18 HEATERS - Ventilators
REMOVAL AND INSTALLATION [Rear heater ducts)
I 7F-T 'f------A
1
Removal steps 1. Floor console
2. Front seat
3. Rail cover
2ow.307 4. Carpet
5. Rear heater duct (B)
6. Rear heater duct (A)
NOTE
Reverse the removal procedures to reinstall.
REMOVAL AND INSTALLATION (Rear ventilator duct) N24MA-
1 (L042GT)
18W825
Removal steps
*I) 1. Upper quarter trim (L042GV)
Rear ventilator cover (L042GT)
2. Nut
3. Screw
4. Air outlet garnish
5. Screw
6. Rear ventilator duct
3
2OW796
NOTE
(1) Reverse the removal procedures to reinstall.
(2) +e : Refer to ” Service Points of Removal”.
SERVICE POINTS OF REMOVAL N24MBAI
1. REMOVAL OF UPPER QUARTER TRIM (L042GV)
OR REAR VENTILATOR COVER (L042GT) Refer to GROUP 23 BODY-Trims, Loose Panel.
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AIR-CONDITIONING-General Information 24-19
GENERAL INFORMATION N2400AC
The air conditioner blows out cooled air by driving the compressor when the air conditioner switch installed
on the heater control papnel is pressed ON and the position of the blower switch is out of OFF position.
The temperature in the cabin is adjusted by the position of the temperature control lever which determines the
opening of the blend air damper and adjusts the mixing ratio of the cooled air and warm air.
The blowout made is ‘z , and the cooled air is blown out from four directions, and the blowout can be adjusted
by the blower switch changes the blowout in four stages by the cabin condition.
The air selector is set on P&J during cooling, and can be changed to & according to the offensive smell and
pollution.
$;e;election
I Mode selection
lever
I
Blower sditch Air-cdnditioner
switch Temberature
control lever
58W539
Mode selection
damper (VENT)
Heater core
Fresh air
Mode selkction
damper
(FOOT/DEF) Evapdrator Blower! motor
2OW830
selection damper STB Revision
1

24-20 AIR-CONDITION!NG-General Information
I
AIR-CONDITIONING SYSTEM COMPO
N24BBBB
Condenser MDuct, joint (Blower side)
oint (Heater unit
Condenser
2OWB31
Suction Pipe Receiver bracket side)
COMPRESSOR - The prime purpose of the compressor is to compress the low pressure refrigerant vapor
from the evaporator into a high pressure, high temperature vapor. The 6 cylinder 6P148 compressor is used.
MAGNETIC CLUTCH is mounted on the compressor providing a convenient way to drive and disengage
compressor in accordance to the cooling needs. CONDENSER is located in front of the radiator. Its function
is to cool the hot, high pressure refrigerant gas causing it to condense into high pressure liquid refrigerant.
RECEIVER DRIER is used to remove any traces of moisture from the refrigerant system. This component
incorporates the sight glass and fusible plug. SIGHT GLASS at the top of the receiver drier is provided as a
diagnostic tool to observe refrigerant flow and observe refrigerant level. THE FUSIBLE PLUG is located on
the receiver drier. Its function is to prevent damage to the air conditioning system in the event that
excessive pressure develops due to condenser air flow being restricted by, for example, leaves, newspaper,
an overcharge of refrigerant, or air in the system. LOW PRESSURE SWITCH prevents damage to the
compressor in case of system loss of refrigerant charge. EXPANSION VALVE - The expansion valve is used
for all applications. Its function is to meter refrigerant into the evaporator in accordance with cooling
requirements. EVAPORATOR COIL is located in the unit and its function is to cool and dehumidify the air
before it enters the vehicle. FREEZE UP CONTROL FIN THERMOSTAT SENSOR is installed at the heater
side of evaporator. The main function of a freeze control is to keep condensate water on the face of the
evaporator coil from freezing and restricting air flow. WATER TEMPERATURE SWITCH - When the
temperature of the radiator coolant became high, this switch functions to stop the compressor and prevent
engine overheating. SERVICE VALVE at the compressor and the discharge line. The valves are used to test
and service the refrigerant system. REFRIGERANT R-12 is used maximum amount 907 g (32 oz.) R-12.
COMPRESSOR OIL is used DENS0 oil 6 maximum amount 110 cc (3.7 U.S.fl.oz., 3.9 Imp.fl.oz.).
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24-26 AIR-CONDITIONING - Circuit Diagram
CIRCUIT DIAGRAM I N24ZB--
Ignition switch
Main
link Sub fusible link
(Fuse B)
I Battery
3
To turn signal flasher unit ~
0.85-RL [Refer to P.8-49.1
i

I 1 ,0.85-LW F
0.85-WB*
“yl lLG1 [Refer to P.8-62.1
C-C
Blower
motor
M
E!! Blower motor
T IA2
Ml
kFF -18
Heater relav N BI ower switch B L
EEJ LR LR resistor
LB LY
El3 LR LI
x’, $2
Wiring color code
B: Black Br: Brown G: Green
Gr: Gray L: Blue Lg: Light green
LI: Light blue 0: Orange P: Pink R: Red
Y: Yellow W: White
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24-42 AIR-CONDITIONING - Air Conditioner Switch
AIR CONDITIONER SWITCH
REMOVAL AND INSTALLATION N24CLA-
2ow929
Removal steps
1. Lap heater duct (C)
2. Glove box stoppers
3. Knobs
4. Plugs
5. Center panel
6. Connection of center panel wiring har-
ness to front wiring harness connector
7. Air conditioner switch
NOTE
(1) Reverse the removal procedures to reinstall. (2) +e : Refer to “Service Points of Removal”
SERVICE POINTS OF REMOVAL
1. REMOVAL OF GLOVE BOX STOPPERS
(1) Open the glove box lid.
(2) Remove the glove box stopper.
(3) Pull the glove box outward.
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