Mitsubishi Galant. Manual — part 636

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-97

Inspection Procedure 3: No sound from one speaker.

AC003976AB

Speaker System Cicuit <Vehicles with Four Speakers>

TSB Revision

CHASSIS ELECTRICAL

RADIO WITH TAPE PLAYER AND CD PLAYER

54A-98

AC003977

Speaker System Cicuit <Vehicles with Seven Speakers>

AB

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-99

CIRCUIT OPERATION

•

<Vehicles with four speakers>

•

The sound is heard from the speaker according
to audio signal output from the radio, tape player
and CD player.

•

<Vehicles with seven speakers>

•

The sound signals are sent from the radio, tape
player and CD player into the 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
system.

AC003089

C-31

CONNECTORS: C-08, C-31

AU

C-08

AC003079AL

CONNECTOR
BLOCK (LH)

CONNECTORS: C-67, C-68

C-67

C-68

AC003415 AF

CONNECTORS: C-69, C-71, C-72CONNECTOR

BLOCK (RH)

C-71

C-69

C-72

AC003689

CONNECTOR: D-17

AB

AC003691

DOOR (RH)

CONNECTOR: E-01, E-02

AB

E-02

E-01

AC003690

CONNECTOR: E-18, E-19

AB

DOOR (LH)

E-19

E-18

AC003085

CONNECTOR: F-02, F-04

AG

F-04

F-02

TSB Revision

CHASSIS ELECTRICAL

RADIO WITH TAPE PLAYER AND CD PLAYER

54A-100

TROUBLESHOOTING HINTS

•

Malfunction of the speaker.

•

Damaged harness wire or connector.

•

Malfunction of the radio, tape player and CD
player.

•

Malfunction of the amplifier <vehicles with seven
speakers>.

•

Malfunction of the DIN cable <vehicles with
seven speakers>.

DIAGNOSIS

STEP 1A. Check which speaker has no sound on the
vehicles with four speakers.
(1) Use the speaker test to determine which speaker does not

sound.

Q: Which speaker has no sound on the vehicles with four

speakers?
Door speaker (LH) : Go to Step 2.
Door speaker (RH) : Go to Step 5.
Rear speaker (LH) : Go to Step 8.
Rear speaker (RH) : Go to Step 11.

STEP 1B. Check which speaker has no sound on the
vehicles with seven speakers.
(1) Use the speaker test to determine which speaker does not

sound.

Q: Which speaker has no sound on the vehicles with seven

speakers?
Door speaker (LH) : Go to Step 15.
Door speaker (RH) : Go to Step 19.
Rear speaker (LH) : Go to Step 23.
Rear speaker (RH) : Go to Step 27.
Tweeter (LH) : Go to Step 31.
Tweeter (RH) : Go to Step 35.
Center speaker : G0 to Step 39.

STEP 2. Check the door speaker (LH).
(1) Remove the door speaker (LH).
(2) Check that the door speaker (LH) generates noise when a

5-volt voltage is applied on the door speaker (LH) terminal.

Q: Is the door speaker (LH) generating noise?

YES : Go to Step 3.
NO : Replace the door speaker (LH). The door speaker

(LH) should sound.

ACX01868AB

5V