Mitsubishi Montero (2004+). Manual — part 550
RADIO WITH TAPE PLAYER AND CD PLAYER
TSB Revision
CHASSIS ELECTRICAL
54A-169
STEP 23. Check tweeter (RH) connector H-15 and amplifier
connector G-19 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.
Q: Are tweeter (RH) connector H-15 and amplifier
connector G-19 in good condition?
YES : Go to Step 24.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. The tweeter (RH) should sound.
STEP 24. Check the wiring harness between tweeter (RH)
connector H-15 (terminals 1 and 2) and amplifier connector
G-19 (terminals 12 and 4).
AC204179
CONNECTOR : G-19
AV
HARNESS SIDE
3 2
1110
4
1312
1
9
5
6
1615
7
8
1817
14
AC204181
CONNECTOR : H-15
AI
HARNESS SIDE
1
2
AC204179
CONNECTOR : G-19
AV
HARNESS SIDE
3 2
1110
4
1312
1
9
5
6
1615
7
8
1817
14
AC204181
CONNECTOR : H-15
AI
HARNESS SIDE
1
2
RADIO WITH TAPE PLAYER AND CD PLAYER
TSB Revision
CHASSIS ELECTRICAL
54A-170
NOTE: Also check intermediate connectors D-15 and D-124. If
intermediate connector D-15 or D-124 are damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection
.
Q: Is the wiring harness between tweeter (RH) connector
H-15 (terminals 1 and 2) and amplifier connector G-19
(terminals 12 and 4) in good condition?
YES : Go to Step 25.
NO : Repair the wiring harness. The tweeter (RH) should
sound.
STEP 25. Replace the radio and CD player.
Q: Do the speakers sound?
YES : There is no action to be taken.
NO : Repair or replace the amplifier. The tweeter (RH)
should sound.
STEP 26. Check the woofer.
(1) Remove the woofer. Refer to
.
(2) Check that the woofer generates noise when a five-volt
voltage is applied on the woofer terminal.
Q: Is the woofer generating noise?
YES : Go to Step 27.
NO : Replace the woofer. The woofer should sound.
AC204171
CONNECTOR : D-15
AB
10
9
31
30
20 21
7
6
28
17 18
8
19
29
4
3
25 26
14 15
1
23
12
2
13
24
5
16
27
11
22
32
AC204170
CONNECTOR : D-124
CW
3
9
2
8
6
5
7
4
1
ACX01868AB
5V
RADIO WITH TAPE PLAYER AND CD PLAYER
TSB Revision
CHASSIS ELECTRICAL
54A-171
STEP 27. Check woofer connector G-01 and amplifier
connector G-19 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.
Q: Are woofer connector G-01 and amplifier connector
G-19 in good condition?
YES : Go to Step 28.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. The woofer should sound.
STEP 28. Check the wiring harness between woofer
connector G-01 (terminals 1 and 2) and amplifier connector
G-19 (terminals 8 and 18).
Q: Is the wiring harness between woofer connector G-01
(terminal 1 and 2) and amplifier connector G-19
(terminal 4 and 13) in good condition?
YES : Go to Step 29.
NO : Repair the wiring harness. The woofer should sound.
AC204197
CONNECTORS : G-01, G-19
AE
G-19
HARNESS SIDE
G-19
HARNESS SIDE
G-01(B)
2
1
G-01(B)
3 2
1110
4
1312
1
9
5
6
1615
7
8
1817
14
AC204197
CONNECTORS : G-01, G-19
AE
G-19
HARNESS SIDE
G-19
HARNESS SIDE
G-01(B)
2
1
G-01(B)
3 2
1110
4
1312
1
9
5
6
1615
7
8
1817
14
RADIO WITH TAPE PLAYER AND CD PLAYER
TSB Revision
CHASSIS ELECTRICAL
54A-172
STEP 29. Replace the radio and CD player.
Q: Do the speakers sound?
YES : There is no action to be taken.
NO : Repair or replace the amplifier. The woofer should
sound.
INSPECTION PROCEDURE 5: Noise is Present while Moving (AM).
STEP 1. Ask the driver about the noise.
(1) Find out the following information from the owner.
(2) Place where the noise occurs.
(3) Locality conditions (valley, mountain, etc.)
(4) Name and frequency of stations affected by noise
Q: What type of noise is detected, vehicle noise or
external noise?
Vehicle noise :
It may not be possible to prevent
noise if the signal is weak. Go to step 2.
External noise :
In almost all cases, prevention on
the receiver side is next to impossible when
the signal is weak. Go to Step 4.
STEP 2. Ask the driver about the location where
the noise occurs
Q: Does the noise occur when entering or near a
particular structure (building, tunnel, mountain,
etc.)?
YES :
Go to Step 3.
NO :
Go to Step 4.
STEP 3. Check if the noise can be eliminated by
adjusting the radio.
(1) Adjust the radio as follows.
(2) Change to a different station with a stronger
signal. This will boost the systems resistance to
outside interference.
(3) Suppress high tones to reduce noise.
Q: Has the noise been eliminated?
YES :
The noise has now been eliminated. Inform
the customer that it is normal to hear noise
while receiving a weak station.
NO :
Go to Step 4.
STEP 4. Check for the noise.
Q: Does noise still exist?
YES :
If there is still more noise than on other
similar radio’s find out the type of noise. Ask
the owner for the name and frequency of the
affected stations, and consult with the radio
manufacturer service center.
NO :
System is operating normally.
INSPECTION PROCEDURE 6: Noise is Present while Moving (FM).
.
DIAGNOSIS
NOTE: FM waves have the same properties as light,
and can be deflected and blocked. FM signal recep-
tion is severely degraded in the shadow of obstruc-
tions such as buildings or mountains. An FM receiver
will then only receive a reflected signal.
ACX01869
10kW
OUTPUT FM
BROAD CAST
FOR STEREO:
20 - 25 km
(12 - 16 miles)
FOR MONAURAL:
30 - 40 km (19 - 25 miles)
FOR HOME STEREO:
80 - 90 km (50 - 56 miles)
MALTIPATH INTERFERENCE
FIRST FADING
INTERFERENCE
AC
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