Mitsubishi Galant (2004+). Manual - part 1483

RADIO WITH CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-175

STEP 19. Check the wiring harness between rear speaker 
(RH) connector D-09 (terminals 1 and 2) and radio and CD 
player connector C-111 (terminals 1 and 7).

NOTE: Also check intermediate connector C-13 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-13 is damaged, repair or 
replace the connectors as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between rear speaker (RH) 

connector D-09 (terminals 1 and 2) and radio and CD 
player connector C-111 (terminals 1 and 7) in good 
condition?
YES : Replace the radio and CD player. The rear speaker 

(RH) should sound.

NO :  Repair the wiring harness. The rear speaker (RH) 

should sound.

AC305234

CONNECTORS: C-13, C-111

C-111

HARNESS SIDE

C-13

C-111

3
9

4

12

14

6

13

5

1110

8

2

7

1

AY

C-13

AC305268

AS

CONNECTOR: D-09

HARNESS SIDE

RADIO WITH CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-176

INSPECTION PROCEDURE 7: No Sound from One Speaker. <Vehicles with audio amplifier>

TWEETER
(RH)

FRONT DOOR 
SPEAKER (RH)

FRONT DOOR 
SPEAKER (LH)

TWEETER
(LH)

AUDIO AMPLIFIER

REAR 
SPEAKER (LH)

REAR 
SPEAKER (RH)

Speaker System Circuit <Vehicles with Audio Amplifier>

RADIO WITH CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-177

.

CIRCUIT OPERATION
The sound signals are sent from the audio amplifier. 
After the signals are amplified and filtered, the sound 
signals are sent to the speaker.

.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty speaker circuit sys-
tem.

.

TROUBLESHOOTING HINTS

• Malfunction of the speaker.

• Damaged wiring harness or connector.

• Malfunction of the audio amplifier.

AC305233

C-12

C-13

C-108 (B)

C-113

CG

CONNECTORS: C-12, C-13, C-108, C-113

AC305231DA

CONNECTORS: C-26, C-28, C-130

C-26

C-28

C-130

AC305268

D-09

D-12

AT

CONNECTORS: D-09, D-12

AC305333

AM

CONNECTOR: E-02

AC305262

CONNECTOR: E-10

AP

RADIO WITH CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-178

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 (LH) : Go to Step 2.
Tweeter (RH) : 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 (LH).
(1) Remove the tweeter (LH). Refer to 

P.54A-220

.

(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 3.
NO :  Replace the tweeter (LH). The tweeter (LH) should 

sound.

STEP 3. Check tweeter (LH) connector C-130 and audio 
amplifier connector C-113 for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.
Q: Are harness connectors C-130 and C-113 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 (LH) should sound.

ACX01868AB

5V

AC305233CC

CONNECTOR: C-113

HARNESS SIDE

AC305231CZ

CONNECTOR: C-130

HARNESS SIDE