2000 MITSUBISHI MONTERO radio antenna

54A-3
ON-VEHICLE SERVICE 46......................
Room Lamp Delay-off Time Adjustment
Procedure 46...............................
REAR COMBINATION LAMP 47...........
SPECIAL TOOLS 47...........................
TROUBLESHOOTING 47.......................
REAR COMBINATION LAMP 47................
HIGH-MOUNTED STOP LAMP 48.........
COLUMN SWITCH 48....................
SPECIAL TOOLS 48...........................
COLUMN SWITCH 48..........................
HAZARD WARNING LAMP SWITCH 50....
SPECIAL TOOLS 50...........................
HAZARD WARNING LAMP SWITCH 50.........
HORN 51................................
CIGARETTE LIGHTER 51.................
ACCESSORY SOCKET 51................
RHEOSTAT 52...........................
CLOCK OR CENTER DISPLAY 53........
TROUBLESHOOTING 53.......................
CLOCK OR CENTER DISPLAY 67..............
RADIO/TAPE PLAYER 68.................
TROUBLESHOOTING 68.......................
RADIO AND CD AUTO CHANGER 81..........
FRONT SPEAKERS 82...................
REAR SPEAKERS 82.....................
ANTENNA83 ............................DEFOGGER 86...........................
TROUBLESHOOTING AUTOMATIC AIR CONDITIONER> 86...........
ON-VEHICLE SERVICE 86.....................
Printed Heater Check 86.....................
Defogger Relay Continuity Check 86...........
DEFOGGER SWITCH 87.......................
SMART WIRING SYSTEM (SWS)
Refer to GROUP 54B ....................
RADIATOR (RADIATOR FAN MOTOR)
Refer to GROUP 14 ......................
AUTOMATIC TRANSMISSION
Refer to GROUP 23 ......................
ANTI-LOCK BRAKE SYSTEM (ABS)
Refer to GROUP 35B ....................
DOOR HANDLE LATCH (DOOR LOCK)
Refer to GROUP 42 ......................
DOOR GLASS-REGULATOR (POWER
WINDOWS)
Refer to GROUP 42 ......................
KEYLESS ENTRY SYSTEM
Refer to GROUP 42 ......................
WINDSHIELD WIPER/WASHER
Refer to GROUP 51 ......................
REAR WIPER/WASHER
Refer to GROUP 51 ......................
SRS AIRBAG Refer to GROUP 52B......
HEATER Refer to GROUP 55.............
AIR CONDITIONER Refer to GROUP 55...


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CHASSIS ELECTRICAL -Radio/Tape Player54A-69
CHART
A. NOISE
A-1 Noise appears at certain places when travelling.
Is there a particular structure?NODo the following measures eliminate
the noise?
1. Change to a different station with
a strong signal to boost
resistance to interference.
2. Suppresshightones to reduce
noise.
3. Extend antenna completely.YESOK
YES
Find out the following information
from the user:
1. Place
2. Locality conditions (valley,
mountain, etc.)
3. Name and frequency of stations
affected by noiseNO
If due to vehicle noise:
It may not be possible to prevent
noise if the signal is weak.
If there is more noise than other radios, find out the
noise conditions and thename andfrequency of the
receiving stations from the user, and consult with the
service centre.
If due to external noise:
In almost all cases, prevention on
the receiver side is impossible.
Weak signals especially are suscep-
tible to interference.


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CHASSIS ELECTRICAL -Radio/Tape Player54A-70
A-2 Mixed with noise, only at night.
The following factors can be considered as possible
causes of noise appearing at night.
1. Factors due to signal conditions: Due to the
fact that long-distance signals are more easily
received at night, even stations that are
received without problem during the day may
experience interference in a general worsening
of reception conditions. The weaker a station
is the more susceptible it is to interference,and a change to a different station or the
appearance of a beating sound* may occur.
Beat sound*: Two signals close in frequency
interfere with each other, creating a repetitious
high-pitched sound. This sound is generated
not only by sound signals but by electrical
waves as well.
2. Factors due to vehicle noise: Alternator noise
may be a cause.
Is the noise still obvious even with
the lamps OFF?NO
YES
Do the following measures eliminate
the noise?
DTune to a station with a strong
signal.
DTune to a station with a strong
signal without completely
extending the antenna.YESOK
NO
Does the noise fade away when the
vehicle harness is moved away from
the radio chassis? (if the harness is
not in the proper position.)YESOK
NO
If there is more noise than other radios, consult a
service centre.


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CHASSIS ELECTRICAL -Radio/Tape Player54A-71
A-3 Broadcasts can be heard but UKW/MW/LW has a lot of noise.
(1)(2)
Noise occurs when theengine is stopped.
YES
Do the following measures eliminate the noise?
DTune to a station with a strong signal.
DExtend the antenna completely.
DAdjust the sound quality to suppresshightones.YES
OK
NO
Is the radio body earth mounted securely?NOSecurely tighten the nuts for the
body earth.
YES
Is the antenna plug properly connected to the radio?NOCorrectly attach the antenna plug.
YES
Is the antenna itself ingood condition or is it properly
mounted?NOClean the antenna plug and earth
wire mounting area. Mount the anten-
na securely.
YES
If there is more noise than other radios, consult a ser-
vice centre.
Is the noise eliminated?
NOYES
OK
Noise occurs when theengine in running.
Inspect the vehicle’s noise suppressor. (Refer to A-4.)


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CHASSIS ELECTRICAL -Radio/Tape Player54A-75
B-3 There is noise but no reception for UKW/MW/LW or no sound from UKW/MW/LW.
OK
Is the checkbeing conducted under
special electrical field conditions?YES
Example: In an under-
ground garage or inside a
building.
NO
Does tuning solve the problem?
Is proper performance obtained when
the vehicle is moved?YES
OKYES
NO
NO
ReconnectNOAre the antenna plug and radio unit properlycon-
nected?
YES
Repair or replace radio.YESDoes the problem disappear if connected to another
radio?
NO
Replace the antenna.
B-4 Insufficient sensitivity.
NO
Replace the antenna.
YES
Repair or replace radio.YESDoes the problem disappear when a different radio is
connected?
OK
Is the checkbeing conducted under
special electrical field conditions?YES
Example: In an under-
ground garage or inside a
building.
NO
Does tuning solve the problem?
Is proper performance obtained when
the vehicle is moved?YES
OKYES
NO
NO
Electrical field condition relatedYESIs the problem limited to the reception of a specific
radio station from a specific position?
NO
Ensure proper connection.NOIs the antenna plug properly connected to the unit?


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CHASSIS ELECTRICAL -Radio/Tape Player54A-76
B-5 Distortion on UKW/MW/LW.
How much distortion is there?OccasionalDistortion in the vicinity of the radio
stationYESExcessiveantenna input
Constant
NO
Are the speaker cords in contact with the cone paper?YESRemove cords away from cone paper.
NO
Remove the speakers and check for torn cone paper or for-
eignobjects.YESRepair or replace speakers.
NO
Check for deformation with speaker installed.YESInstall speaker securely.
NO
Repair or replace radio.
B-6 Too few automatic select stations.
OK
Is the checkbeing conducted under
special electrical field conditions?YES
Example: In an under-
ground garage or inside a
building
NO
Is the antenna plug properly connected to the equip-
ment?
Is proper performance obtained when
the vehicle is moved?
Ensure proper connection.NO
NO
YES
Repair or replace radio.YESDoes the equipment work properly if the radio is
changed?
NO
Replace the antenna.YES


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