Mitsubishi Outlander GS45X. Manual - part 104

RADIO AND CD PLAYER

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CHASSIS ELECTRICAL

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STEP 3. Check that the noise fades away by the 
following actions.
(1) Tune to a station with a stronger wave.
(2) Adjust the sound quality to suppress high tones.

Q: Is the noise eliminated?

YES : 

This diagnosis is complete.

NO : 

Go to Step 4.

STEP 4. Check that the radio and CD player is 
correctly grounded
The radio is connected to the ground with an assem-
bling screw.

Q: Is the radio correctly grounded?

YES : 

Go to Step 5.

NO : 

Assemble the radio and CD player into the 
vehicle.

STEP 5. Check the antenna plug is connected to 
the radio and CD player.

Q: Is the antenna plug thoroughly connected to the 

radio and CD player?
YES : 

Go to Step 7.

NO : 

Go to Step 6.

STEP 6. Check that the noise is eliminated when 
the antenna plug is properly attached.

Q: Is the noise eliminated?

YES : 

This diagnosis is complete.

NO : 

Go to Step 7.

STEP 7. Check that the antenna is in good 
condition and is it properly mounted.

Q: Is the antenna in good condition and is it properly 

mounted?
YES : 

Consult the radio manufacturer's service 

center.

NO : 

Repair or replace the roof antenna. 

INSPECTION PROCEDURE 11: There is more noise on either AM or FM.

DIAGNOSIS

• More noise comes out from AM only.

• AM is easily interfered by the engine, power 

line, and thunder.

• More noise comes out from FM only.

• Due to the property of FM waves, reflection 

and interference occur. Thus, noise are easily 
caused by interference of buildings and 
mountains.

STEP 1. Check which comes out more noise, AM 
or FM. 

Q: Which comes out more noise, AM or FM?

AM : 

Go to Step 2. 

FM : 

Refer to (Refer to Inspection Procedure 12 

P.54A-414

)

STEP 2. Check that there is noise under the 
following state(s).

• A motorcycle was passing.

• The levin was flashing.

• A vehicle passed close by, but it appeared to be a 

vehicle generating a particularly large amount of 
noise radiation.

• Passed beneath a power line.

• Passed beneath a telephone line.

• Passed close by a signal generator.

• Passed close by some other sources of electrical 

noise.

• Passed under a bridge.

Q: Is there noise in the above states?

YES : 

Go to Step 4.

NO : 

Go to Step 3.

STEP 3. Continue to check for static; when static 
is detected, check for the conditions listed 
above.

Q: Is there noise in the state described in Step 2?

YES : 

Noise prevention on the radio side is 

difficult. If the problem is particularly worse 
than other radios, consult a service center.

NO : 

Go to Step 4.

RADIO AND CD PLAYER

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STEP 4. Compare it with the other radios.

Q: Is the noise level worse than other radios?

YES : 

Consult a service center. 

NO : 

If the noise level is roughly the same as 
other radios, there is no action to be taken.

INSPECTION PROCEDURE 12: Noise sometimes appears on FM during traveling.

DIAGNOSIS

STEP 1. Check the state of the antenna.
Check that there is no damage or crack in the roof 
antenna.

Q: Is the mast antenna assembled?

YES : 

Go to Step 2.

NO : 

Repair or replace the roof antenna.

STEP 2. The check after adjusting the radio.

Q:  Readjust the radio. Is the noise eliminated?

YES : 

 The procedure is complete.

NO : 

Go to Step 3.

STEP 3. Check with several broadcasting 
stations.
NOTE: Multipath noise and fading noise: Because of 
the frequency of FM waves in extremely high, it is 
highly susceptible to effects from geological forma-
tions and buildings. These effects disrupt the broad-
cast signal and obstruct reception in several ways.

.

Multipath noise

•

This describes the echo that occurs when the 
broadcast signal is reflected by a large obstruc-
tion and enters the receiver with a slight time 
delay relative to the direct signal (repetitious 
buzzing).

.

Fading noise

•

This is a buzzing noise that occurs when the 
broadcast beam is disrupted by obstructing 
objects and the signal strength fluctuates intri-
cately within a narrow range.

Q: Is the abnormality in reception generated only 

within a certain range?
YES : 

The effect of an electrical field condition 

(multipath noise, fading noise) could be the 
cause. The procedure is complete.

NO : 

Go to Step 4.

STEP 4. Check that noise appears when the radio 
switch is turned on while the vehicle is stopped.
NOTE: Static electricity noise: Body static electric 
from the shock absorber rubber bushings used to 
prevent vibration, tires, etc. occurs because of sepa-
ration from the ground, causing a buzzing noise. 
There is no measures to discharge the static electric-
ity of the vehicle body. Check that there is no noise.

Q: Does noise appear when the radio switch is turned 

on while the vehicle is stopped and the radio is 
tapped while tuned away from a station?
YES : 

Go to Step 5.

NO : 

It may be static electricity noise. The 
procedure is complete.

STEP 5. Check that the radio is correctly 
grounded.
The radio is connected to the ground with an assem-
bling screw.

Q: Is the radio correctly grounded? 

YES : 

Go to Step 6.

NO : 

Tighten the screw securely.

STEP 6. Check by replacing the radio and CD 
player.

Q:  Are operations normal when using another radio 

and CD player?
YES : 

Either repair or replace the radio and CD 

player.

NO : 

Repair or replace the roof antenna.

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Inspection Procedure 13: Noise is detected with engine running.

DIAGNOSIS

.

CAUTION

Never connect a noise filter to the high tension 
cable (spark plug wire). Spark plug wires incor-
porate resistors which have the effect of sup-
pressing noise. If a spark plug wire is found to be 
causing noise, it must be replaced.

CAUTION

Confirm that the noise is not from an external 
source.

CAUTION

Noise prevention should be performed by sup-
pressing strong sources of noise first.

Description of noise

Condition

Cause

Solution

AM, FM: ignition noise 
(popping, snapping, 
cracking, buzzing)

• Increasing the engine 

speed causes the 
generator whine to 
speed up and the 
volume to decrease.

• Disappears when the 

ignition switch turned 
to "ACC", and engine 
is off.

• Electrical interference 

from the spark plugs.

• Engine noise.

• Check or replace the 

ground cable.

• Check or replace 

spark plug wires.

Other electrical 
components

-

Noise may intensify due 
to aging electrical 
components.

Repair or replace the 
electrical components.

Static electricity (cracking, 
crinkling)

Noise disappears when 
the vehicle is completely 
stopped.

Noise occurs when parts 
or wiring move and 
contact vehicle body.

Return parts or wiring to 
their proper position.

Static electricity (cracking, 
crinkling)

Various noises are 
produced depending on 
the body part of the 
vehicle.

This may be due to the 
recent removal of the 
front hood, bumpers, 
exhaust pipe and muffler, 
suspension, etc.

• Properly ground parts.

• Properly ground all 

body parts.

AC709398

Generator

AC

Ground cable

<3.0L Engine>

AC709974

Power steering 
oil pump

Ground cable

<2.4L Engine>

AB

RADIO AND CD PLAYER

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INSPECTION PROCEDURE 14: Noise appears during vibration or shocks.

DIAGNOSIS

STEP 1. Check the fit of the antenna.
Q: Is the antenna base fitted securely?

YES : Go to Step 2.
NO :  Install the antenna, and tighten the mounting nut 

(Refer to 

P.54A-696

). Check that there is no noise.

STEP 2. Check the fit of antenna feeder cable.
Q: Is the antenna feeder cable fitted securely?

YES : Go to Step 3.
NO :  Ensure that the antenna base and the radio and CD 

player are fitted securely. Check that there is no 
noise.

STEP 3. Check that noise appears when the radio switch is 
turned on while the vehicle is stopped and the radio is 
tapped while tuned away from a station.
NOTE: Body static electricity from the shock absorber rubber 
bushings used to prevent vibration, tires, etc. occurs because 
of separation from the ground, causing a buzzing noise. Since 
no measures can be taken to discharge the static electricity of 
the vehicle body. Check that there is no noise.
Q: Does noise appear when the radio switch is turned on 

while the vehicle is stopped and the radio is tapped 
while tuned away from a station?
YES : Go to Step 4.
NO :  It may be static electricity noise.

STEP 4. Verify that the radio is correctly grounded. 
The radio is connected to the ground with an assembling 
screw.
Q: Is the radio correctly grounded?

YES : Go to Step 5.
NO :  Tighten the screw securely. Check that there is no 

noise.

STEP 5. Check by replacing radio and CD player.
Q: Do the other radio and CD player work normally?

YES : Either repair or replace the original radio and CD 

player. Check that there is no noise.

NO :  Either repair or replace the antenna assembly. Check 

that there is no noise.