Mitsubishi 380. Manual - part 915

RADIO WITH CD PLAYER

CHASSIS ELECTRICAL

54A-194

STEP 2. Check the radio switch (LH) connector C-311 and 
clock spring connector C-303 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Is remote controlled radio switch (LH) connector C-311 

and clock spring connector C-303 in good condition?
YES : Go to Step 3.
NO :  Repair or replace the connector. Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

. The 

remote controlled radio switch (LH) should work 
normally.

STEP 3. Check the wiring harness between remote 
controlled radio switch connector C-311 (terminals1 and 2) 
and clock spring connector C-303 (terminals 4 and 5).
Q: Are the wiring harness between remote controlled radio 

switch connector C-311 (terminals 1 and 2) and clock 
spring connector C-303 (terminals 4 and 5) in good 
condition?
YES : No action to be taken.
NO :  Repair the wiring harness. The remote controlled 

radio switch (LH) should work normally.

16DB535A

CONNECTORS: C-303, C-311

C-311 (B)

C-303 (GR)

C-303

C-311

HARNESS SIDE

16DB535A

CONNECTORS: C-303, C-311

C-311 (B)

C-303 (GR)

C-303

C-311

HARNESS SIDE

RADIO WITH CD PLAYER

CHASSIS ELECTRICAL

54A-195

INSPECTION PROCEDURE 5: No Sound from One Speaker.

.

CIRCUIT OPERATION

The speakers sound according to audio signal output 
from the radio and CD player.

.

TECHNICAL DESCRIPTION (COMMENT)

The cause is probably a faulty speaker circuit sys-
tem.

.

TROUBLESHOOTING HINTS

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

• Malfunction of the speaker.

• Damaged wiring harness or connector.

• Malfunction of the radio and CD player.

16DB536A

CONNECTORS: C-26, C-129, C-111 

C-26

C-111

 C-129 (B)

16DB537A

CONNECTORS: C-12, C-28, C-108

C-12

C-28

C-108 (B)

AC305268

D-09

D-12

AT

CONNECTORS: D-09, D-12

16DB539A

CONNECTOR: E-10

16DB538A

CONNECTOR: E-02

RADIO WITH CD PLAYER

CHASSIS ELECTRICAL

54A-196

DIAGNOSIS

STEP 1. Check which speaker has no sound on the 
vehicles with audio amplifier.
Determine which speaker does not sound.

Q:  Which speaker does not sound?

Tweeter (RH) : Go to Step 2.
Tweeter (LH) : Go to Step 5.
Front door speaker (LH) : Go to Step 8.
Front door speaker (RH) : Go to Step 11.
Rear speaker (LH) : Go to Step 14.
Rear speaker (RH) : Go to Step 17.

STEP 2. Check the tweeter (RH).
(1) Remove the tweeter (RH). Refer to 

P.54A-232

.

(2) Check that the tweeter (RH) generates noise when a 

five-volt voltage is applied on the tweeter (RH) terminal.

Q: Is the tweeter (RH) generating noise?

YES : Go to Step 3.
NO :  Replace the tweeter (RH). The tweeter (RH) should 

sound.

STEP 3. Check tweeter (RH) connector C-108 and radio 
and CD player connector C-111 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Are harness connectors C-108 and C-111 in good 

condition?
YES : Go to Step 4.
NO :  Repair or replace the component(s). Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

. The 

tweeter (RH) should sound.

ACX01868AB

5V

54DB041A

HARNESS SIDE

3

9

4

12

14

6

13

5

1110

8

2

7

1

CONNECTOR: C-111

16DB540A

CONNECTOR: C-108

C-108 (B)

HARNESS SIDE

RADIO WITH CD PLAYER

CHASSIS ELECTRICAL

54A-197

STEP 4. Check the wiring harness between tweeter (RH) 
connector C-108 (terminals 1 and 2) and radio and CD 
player connector C-111 (terminals 6 and 14).
Q: Is the wiring harness between tweeter (RH) connector 

C-108 (terminals 1 and 2) and radio and CD player 
connector C-111 (terminals 6 and 14) in good condition?
YES : The procedure is complete.
NO :  Repair the wiring harness. The tweeter (RH) should 

sound.

STEP 5. Check the tweeter (LH).
(1) Remove the tweeter (LH). Refer to 

P.54A-232

.

(2) Check that the tweeter (LH) generates noise when a 

five-volt voltage is applied on the tweeter (LH) terminal.

Q: Is the tweeter (LH) generating noise?

YES : Go to Step 6.
NO :  Replace the tweeter (LH). The tweeter (LH) should 

sound.

54DB041A

HARNESS SIDE

3

9

4

12

14

6

13

5

1110

8

2

7

1

CONNECTOR: C-111

16DB540A

CONNECTOR: C-108

C-108 (B)

HARNESS SIDE

ACX01868AB

5V