Mitsubishi Galant. Manual — part 635

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-93

Inspection Procedure 2: No sound. <vehicles with amplifier>

AC003975

Amplifier Power Supply Circuit

AB

AC003723 AB

BATTERY

FUSIBLE LINK (3)

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

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CHASSIS ELECTRICAL

RADIO WITH TAPE PLAYER AND CD PLAYER

54A-94

CIRCUIT OPERATION
Power is supplied to the amplifier when the fusible
link (3).

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

TROUBLESHOOTING HINTS

•

Damaged harness wire or connector.

•

Damaged DIN cable.

•

Malfunction of the amplifier.

•

Malfunction of the radio, tape player, CD player
and CD auto changer.

DIAGNOSIS

Required Special Tool:

•

MB991223: Harness set

STEP 1. Check the amplifier power supply circuit by
backprobing.
(1) Do not disconnect amplifier connector D-17.
(2) Measure the voltages between terminal 2, 10 and ground

by backprobing.

Q: Are the voltages approximately 12 volts (battery

positive voltage)?
YES : Go to Step 4.
NO : Go to Step 2.

STEP 2. Check amplifier connector D-17 for damage.
Q: Is amplifier connector D-17 in good condition?

YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. The speakers should

sound.

AC003415AH

CONNECTOR: C-69

CONNECTOR
BLOCK (RH)

AC003689

CONNECTOR: D-17

AB

AC003704 AC

CONNECTOR D-17

(HARNESS SIDE)

AC003689

CONNECTOR: D-17

AB

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-95

STEP 3. Check the harness wires between amplifier
connector D-17 and fusible link (3).
NOTE: After inspecting intermediate connector C-66 and C-69,
inspect the wires. If intermediate connector C-66 and C-69 are
damaged, repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection

P.00E-2

.

Q: Are the harness wires between amplifier connector D-17

and fusible link (3) in good condition?
YES : There is no action to be taken.
NO : Repair them. The speakers should sound.

AC003723 AB

BATTERY

FUSIBLE LINK (3)

AC003689

CONNECTOR: D-17

AB

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

AC003415AH

CONNECTOR: C-69

CONNECTOR
BLOCK (RH)

TSB Revision

CHASSIS ELECTRICAL

RADIO WITH TAPE PLAYER AND CD PLAYER

54A-96

STEP 4. Check amplifier connector D-17 for damage.
Q: Is amplifier connector D-17 in good condition?

YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. The speakers should

sound.

STEP 5. Check the harness wires between amplifier
connector D-17 and ground.
Q: Are the harness wires between amplifier connector D-17

and ground in good condition?
YES : Go to Step 6.
NO : Repair them. The speakers should sound.

STEP 6. Check the DIN cable between amplifier and radio,
tape player and CD auto changer.

Q: Are the DIN cable in good condition?

YES : Repair or replace the amplifier or radio, tape player,

CD player and CD auto changer. The speakers
should sound.

NO : Repair or replace it. The speakers should sound.

AC003689

CONNECTOR: D-17

AB

AC003689

CONNECTOR: D-17

AB