1987 MITSUBISHI MONTERO Wiring

AUDIO SYSTEM - Specifications 8-193
NOISE SOURCES
Source of Electrical System Noise
Ignition system
(1) Spark plug
(2) High tension cable
(3) Distributor Power generation system
(1) Ripple at contact between alternator
armature and carbon brush
(2) Spark from voltage regulator contact
!
Other electrical device
(1) Armature of wiper, blower and other
motors.
(2) Starter and switch when starting engine
(3) Spark from changeover switch
(4) Horn
(5) Contact of turn signal
(6) Loose contact of wiring harness
(7) Static electricity generated by tire or
generator drive-belt
(8) Voltage stability unit for instrument
Noise Sourse of Vehicle Equipment
Kind of noise
Whistling sound Equipment
Alternator Symptom of noise generation
Noise increases when accelerator pedal is
depressed and it subsides soon after engine
is stopped.
Scratching sound
Water temperature gauge unit Noise is produced while engine is running
and it persists for a while after engine
shutdown.
Fuel gauge unit Noise is produced at sudden acceleration,
driving on rough road or when ignition key is
placed to ON.
Jarring
Wish-wash,
wish-wash
Buzz, click Oil pressure switch
Flasher relay
Horn
Wiper motor
Washer motor Noise is produced with engine operation
and no noise is made when engine is idling.
Noise is produced with operation of turn
signal light
Noise is made when horn button is pressed
or released.
Whinning Noise is generated with the wiper speed.
Noise is made when washer is operated.
STB Revision

AUDIO SYSTEM - Circuit Diagram 8-195
(L.H.)
C-65 Front speaker
YL B-03
Gr,=: (L.H.)
B-04
B-29
YR c
GrRC+
(R.H.)
B-2?’
Remarks
(1) For information concerning the ground points (exam-
ple: 0 ), refer to P.8-7.
(2) The symbols 0, 0, etc. indicate that the wiring is
connected (using the same numerical symbol) to the
facing page.
(in other words, 0 on the right page is connected to 0 on
the left page.)
Wiring color code
B: Black Br: Brown G: Green Gr: Gray L: Blue
LI: Light blue 0: Orange P: Pink R: Red Y: Yellow Rear speaker
Lg: Light green
W: White
/ STB Revision

AUDIO SYSTEM - Radio and Tape Player e-197
RADIO AND TAPE PLAYER
REMOVAL AND INSTALLATION NOINJAF
16W1519
Post-installation Operation l Adjustment of Antenna Trimmer
(Refer to P.8-196.) Removal steps
1. Knob
2. Plug
3. Center console
4. Connection of center panel wiring har-
ness to front wiring harness connector 7. Radio
8. Tape player
9. Box (Vehicles without tape player)
5. Radio panel
6. Radio bracket NOTE
Reverse the removal procedures to reinstall. 1 STB Revision

8-200 AUDIO SYSTEM - Antenna/Noise Suppression
3. REMOVAL OF FRONT FENDER PANEL
Refer to GROUP 23 Body-Front Fender
SEFiVlCE ff OINTS OF INSTALLATION
3. IbSTALLATION OF FRONT FENDER PANEL
Refer to GROUP 23 Body-Front Fender.
NOISE SWPRESSION N08NOAA
I. Noise interfering with radio reception may be roughly
classified as follows:
(1) Noise produced by the vehicle itself
Noise from the ignition circuit, alternator circuit, etc
(2) Noise generated in the radio itself
Thermal noise from transistors, IC, resistor, etc.
(3) Atmospheric noise
Noise from other cars, neon signs, etc.
2. The radio has devices to suppress noise of the radio itsel f
3. and atmospheric noise, but it is difficult to eliminate them
completely. Noise produced by the vehicle includes whin-
ing from the alternator system, and a strong, impulsive,
fast popping noise from the ignition system.
Before performing any checking or adjustments, first
confirm the following points.
Adjust the antenna trimmer completely.
Set the push buttons (tuning) properly.
Extend the antenna all the way.
PREVENTION OF IGNITION CIRCUIT NOISE
A resistance-equipped cable is used for the high-tension cable
in order to prevent noise; however, if any noise from the
ignition circuit does occur, check the tightness and ground
connection of the positive (+) terminal of the noise filter, and,
if necessary, check the noise filter.
Caution
Be careful not to connect the noise filter to the hightension
cable; doing so could damage the noise filter.
PREVENTION OF OTHER CIRCUIT NOISE
1. For other noises, take necessary corrective actions in
accordance with the following items and the NOISE
SUPPRESSION CHART.
2. Polish the grounding cable terminal, and connect it proper-
ly.
3. Polish the pillar antenna ground terminal, and connect it
properly.
4. Ground electric parts completely.
5. Keep the antenna cable and speaker lead wire away from
other electric wiring.
STB Revision

BACK DOOR WINDOW DEFOGGER - Circuit Diagram 8-205
CIRCUIT DUAGRAM
DEFOGGER CIRCUIT -t IDI L
m
- H-UL Ll&J Sub fusible link
5-w A-23 0.5-G 1 5-w"5'w m
z-w ,
u
fusible ignition switch
Main
link
To light control
relay w zmR~
[Refer to P.8-461
q--l-
2 @fuse
i
Multi-purpose m
E
c:
t
To column switch
[Refer to P.8-461
1.25-B
a
c!
Rheostat
Defogger switch a
cl
31 W02:
Remarks
For information concerning the ground points (example:D).
refer to P.8-7.
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 STB Revision

8-214 AUTOM TIC FREE-WHEELING VU6 INDICATOR SYSTEM - Circuit Diagram
I
m I IA-21 m
v?~
r:
BI I To column switch
2
[Refer to P.8-461 CT
= 9’i A I
I
m z
I ’
c: d
I ’
LR
!J
I I 1
CIRCUIT DIAGRAM
AUTOMATIC FREE-WHEELING HUB INDICATOR SYSTEM
CIRCUIT
F==e=%
Battery lu-!
A-02 Sub fusible link
- 15-w r-)5-w 0.5-G
2-w
I I I I
Main fusible
link
7
N
-22
3
Pulse c:
generator
h Ignition switch
I /Locking check circuit 1
q IIEI Combination meter
Automatic free-wheeling hub
indicator control unit
1 B R
Em El1 Y L
Remark
For information concerning the ground points (example: q ),
refer to P.8-7.
37W610
Wiring color code
B: Black Br: Brown
G: Green L: Blue
LI: Light blue Lg: Light green
0: Orange P: Pink “,r: RG,‘d”Y
Y: Yellow
W: White
1 STB Revision

24-4 HEATERS c Circuit Diagram
CIRCUIT DIAGRAM
I
El3 1 El1
lanition switch
Sub fusible link
Battery link m- (Fuse B)
3
1 I (Ignition switch)
Multi-purpose Q
fuse
M $5
LA,:
a3
To turn sional flasher (Init
0.85RI I I f-Y ’ I [Refer to P.8-49.7- - - ‘d -r i
I Blower
Blower switch
CJ -18
Heater r&v Blower motor ?
resistor
Remark
For information concerning the ground points (example:
q ),
refer to P.8-7.
Wiring color code
B: Black Br. Brown
G: Green
Gr: Gray
LI: Light blue
0: Orange P: Pink
R: Red L: Blue
Y: Yellow Lg: Light green
W: White
1 STB Revision

HEATERS - Heater Control 24-9
HEATER CONTROL
N24GA-
REMOVAL AND INSTALLATION
2QW824
Removal steps
4+ 1. Glove box stoppers
++ ~~ 2. Air selection control wire
3. Knobs
4. Plugs
5. Center panel
6. Connection of center panel wiring har-
ness to front wiring harness connector
7. Lap heater duct (B)
8. Defroster duct
++
l + 9. Mode selection control wire
++
l + 10. Water valve control wire
l a II. Heater control assembly
12. Blower switch EyTEeverse the removal procedures to reinstall.
(2) 4+ : Refer to “Service Points of Removal”.
(3) eq : Refer to “Service Points of Installation”.
SERVICE POINTS OF REMOVAL N24GBAE
1. REMOVAL OF GLOVE BOX STOPPERS (1) Open the glove box lid.
(2) Remove the glove box stopper. (3) Pull the glove box outward.