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

P.54A-195

Noise

Noise is present while moving (AM).

6

P.54A-207

Noise is present while moving (FM).

7

P.54A-207

Sound mixed with noise, only at night 
(AM).

10

P.54A-208

Noise is overpowering both AM and FM. 11

P.54A-209

Excessive noise on AM and FM.

12

P.54A-210

Noise is detected with engine running.

13

P.54A-210

Noise appears during vibration or 
shocks.

14

P.54A-211

Noise is present wile moving (FM) .

15

P.54A-213

Constant noise.

16

P.54A-214

Radio

No reception (AM).

17

P.54A-215

Poor reception.

18

P.54A-216

Distortion on AM and/or FM.

19

P.54A-218

Distortion on FM only.

20

P.54A-219

Auto select function inoperative, too few 
automatic stations are selected.

21

P.54A-219

Preset stations are erased.

22

P.54A-221

CD player, CD auto 
changer

CD can not be inserted.

23

P.54A-223

No sound (CD only).

24

P.54A-224

CD sound skips.

25

P.54A-224

Sound quality is poor.

26

P.54A-225

CD cannot be ejected.

27

P.54A-226

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-

90

• Refer to configuration diagrams GROUP-

80

• 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 

P.00E-2

. 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 

P.00E-2

. 

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 

P.00E-2

. 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