Mitsubishi Galant (2004+). Manual — part 1478

RADIO WITH CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-155

STEP 2. Check the remote controlled radio switch (RH)
connector C-301 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 (RH) connector C-301

and clock spring connector C-303 in good condition?
YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. The remote controlled

radio switch (RH) should work normally.

STEP 3. Check the wiring harness between remote
controlled radio switch (RH) connector C-301 (terminals1
and 2) and clock spring connector C-303 (terminals 4 and
5).
Q: Are the wiring harness between remote controlled radio

switch (RH) connector C-301 (terminals 1 and 2) and
clock spring connector C-303 (terminals 4 and 5) in
good condition?
YES : The procedure is complete.
NO : Repair the wiring harness. The remote controlled

radio switch (RH) should work normally.

AC305236

CONNECTORS: C-301, C-303

C-301 (B)

C-303 (GR)

C-301

C-303

HARNESS SIDE

AD

AC305236

CONNECTORS: C-301, C-303

C-301 (B)

C-303 (GR)

C-301

C-303

HARNESS SIDE

AD

RADIO WITH CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-156

INSPECTION PROCEDURE 4: The system does not recognize the remote controlled radio switch (LH)
only.<Vehicles with Audio Amplifier>

.

CIRCUIT OPERATION
Refer to Inspection Procedure 2

P.54A-145

.

.

TECHNICAL DESCRIPTION (COMMENT)
Refer to Inspection Procedure 2

P.54A-145

.

.

TROUBLESHOOTING HINTS
Refer to Inspection Procedure 2

P.54A-145

.

DIAGNOSIS

Required Special Tool:

• MB991223: Harness set

STEP 1. Measure the resistance at remote controlled radio
switch (LH).
(1) Remove the airbag module assembly (Refer to GROUP

52B, Air Bag Module(s) and Clock Spring

P.52B-368

).

(2) Measure the resistance by operating the remote controlled

radio switch (LH) in each position.

Q: Is the resistance at the left remote controlled radio

switch normal?
YES : Go to Step 2.
NO : Replace the remote controlled radio switch (LH).

SWITCH POSITION

MEASUREMENT VALUE

No push

Open circuit

Upper

Approximately 1.2 k

Ω

Center

Approximately 470

Ω

Lower

Approximately 3.3 k

Ω

AC211693AB

RADIO WITH CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-157

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.

AC305236

CONNECTORS: C-303, C-311

C-311 (B)

C-303 (GR)

C-303

C-311

HARNESS SIDE

AE

AC305236

CONNECTORS: C-303, C-311

C-311 (B)

C-303 (GR)

C-303

C-311

HARNESS SIDE

AE

RADIO WITH CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-158

INSPECTION PROCEDURE 5: No Sound. <Vehicles with Audio Amplifier>

.

CIRCUIT OPERATION
Power is supplied from the battery directly to the
audio amplifier.

.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty audio amplifier power
supply circuit system.

.

TROUBLESHOOTING HINTS

• Damaged wiring harness or connector.

• Malfunction of the audio amplifier.

FUSIBLE
LINK

5

JUNCTION
BLOCK

AUDIO AMPLIFIER

RADIO, CD PLAYER AND CD CHANGER

Audio Amplifier Power Supply Circuit

AC305231

CONNECTOR: C-29

AH

AC305233 CE

CONNECTORS: C-113, C-114, C-116

C-116

C-113

C-114