Mitsubishi 380. Manual — part 911
RADIO WITH CD PLAYER
CHASSIS ELECTRICAL
54A-178
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: When Power Switch is Turned "ON," no Power is Available.
.
No sound from one speaker.
5
Noise
Noise is present while moving (AM).
6
Noise is present while moving (FM).
7
Sound mixed with noise, only at night
(AM).
10
Noise is overpowering both AM and FM. 11
Excessive noise on AM and FM.
12
Noise is detected with engine running.
13
Noise appears during vibration or
shocks.
14
Noise is present wile moving (FM) .
15
Constant noise.
16
Radio
No reception (AM).
17
Poor reception.
18
Distortion on AM and/or FM.
19
Distortion on FM only.
20
Auto select function inoperative, too few
automatic stations are selected.
21
Preset stations are erased.
22
CD player, CD auto
changer
CD can not be inserted.
23
No sound (CD only).
24
CD sound skips.
25
Sound quality is poor.
26
CD cannot be ejected.
27
SYMPTOM
INSPECTION
PROCEDURE
REFERENCE PAGE
52DB014A
CONNECTOR: C-29
54DB041A
HARNESS SIDE
3
9
4
12
14
6
13
5
1110
8
2
7
1
CONNECTOR: C-111
RADIO WITH CD PLAYER
CHASSIS ELECTRICAL
54A-179
CIRCUIT OPERATION
Power is supplied to the radio and CD player or
radio, CD player and CD changer when the ignition
switch is in the "ACC" position or "ON" position.
When the ignition is switched on, the radio and CD
player or radio, CD player and CD changer will
return to the previous state when the ignition was
switch off at the last time.
.
TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty radio and CD player or
radio, CD player and CD changer power supply cir-
cuit .
.
TROUBLESHOOTING HINTS
• Refer to circuit diagrams GROUP-
• Refer to configuration diagrams GROUP-
• Damaged wiring harness or connector.
• Malfunction of the radio and CD player or radio,
CD player and CD changer.
DIAGNOSIS
Required Special Tool:
• MB991223: Harness set
STEP 1. Check to see that the radio and CD player or radio,
CD player and CD changer is energized when the power
switch is turned ON.
(1) Turn the ignition switch to "ACC" position.
(2) Turn ON the radio and CD player or radio, CD player and
CD changer power switch.
Q: Is the radio and CD player or radio, CD player and CD
changer energized when the power switch is turned
ON?
YES : Go to Step 2.
NO : Go to Step 5.
STEP 2. Check radio and CD player or radio, CD player and
CD changer connector C-111 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are radio and CD player or radio, CD player and CD
changer connector C-111 in good condition?
YES : Go to Step 3.
NO : Repair or replace the component(s). Refer to GROUP
00E, Harness Connector Inspection
. If the
power switch is turned on, the radio and CD player or
radio, CD player and CD changer should operate
normally.
54DB041A
HARNESS SIDE
3
9
4
12
14
6
13
5
1110
8
2
7
1
CONNECTOR: C-111
RADIO WITH CD PLAYER
CHASSIS ELECTRICAL
54A-180
STEP 3. Check the wiring harness between radio and CD
player or radio, CD player and CD changer connector
C-111 (terminal 10) and the ignition switch (ACC).
NOTE: Also check intermediate connector C-29 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-29 is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion
.
Q: Is the wiring harness between radio and CD player or
radio, CD player and CD changer connector C-111
(terminal 10) and ignition switch (ACC) in good
condition?
YES : Go to Step 4.
NO : Repair the wiring harness. If the power switch is
turned on, the radio and CD player or radio, CD player
and CD changer should operate normally.
STEP 4. Check the installation condition of the radio and
CD player or radio, CD player and CD changer.
NOTE: The radio and CD player or radio, CD player and CD
changer are grounded to the deck crossmember directly.
Q: Are the radio and CD player or radio, CD player and CD
changer installed correctly?
YES : Repair or replace the radio and CD player or radio,
CD player and CD changer. If the power switch is
turned on, the radio and CD player or radio, CD player
and CD changer should operate normally.
NO : Install the radio and CD player or radio, CD player
and CD changer properly. If the power switch is
turned on, the radio and CD player or radio, CD player
and CD changer should operate normally.
54DB041A
HARNESS SIDE
3
9
4
12
14
6
13
5
1110
8
2
7
1
CONNECTOR: C-111
52DB014A
CONNECTOR: C-29
RADIO WITH CD PLAYER
CHASSIS ELECTRICAL
54A-181
STEP 5. Measure at radio and CD player or radio, CD
player and CD changer connector C-111 in order to check
the battery circuit of power supply system to the radio and
CD player or radio, CD player and CD changer (ignition
switch ACC).
(1) Disconnect radio and CD player or radio, CD player and CD
changer connector C-111, and measure at the wiring
harness side.
(2) Turn the ignition switch to "ACC" position.
(3) Measure the voltage between terminal 10 and ground.
• The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 8.
NO : Go to Step 6.
STEP 6. Check radio and CD player or radio, CD player and
CD changer connector C-111 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are radio and CD player or radio, CD player and CD
changer connector C-111 in good condition?
YES : Go to Step 7.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. If the power switch is turned on, the radio
and CD player or radio, CD player and CD changer
should operate normally.
54DB041A
HARNESS SIDE
3
9
4
12
14
6
13
5
1110
8
2
7
1
CONNECTOR: C-111
AC209365
3
9
4
12
14
6
13
5
1110
8
2
7
1
CONNECTOR C-111
(HARNESS SIDE)
HV
54DB041A
HARNESS SIDE
3
9
4
12
14
6
13
5
1110
8
2
7
1
CONNECTOR: C-111
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