Mitsubishi Galant. Manual — part 634

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-89

SYMPTOM PROCEDURES

Inspection Procedure 1: When power switch is turned "ON," no power is available.

AC003974 AB

Radio, Tape Player and CD Player Power Supply Circuit

AC003089

CONNECTOR: C-31

AT

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

TSB Revision

CHASSIS ELECTRICAL

RADIO WITH TAPE PLAYER AND CD PLAYER

54A-90

CIRCUIT OPERATION
Power is supplied to the radio, tape player, CD player
and CD auto changer when the ignition switch is at
the "ACC" or "ON" position.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty radio, tape player, CD
player and CD auto changer power supply circuit
system.

TROUBLESHOOTING HINTS

•

Damaged harness wire or connector.

•

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

DIAGNOSIS

Required Special Tool:

•

MB991223: Harness set

STEP 1. Check the radio, tape player, CD player and CD
auto changer power supply circuit by backprobing.
(1) Do not disconnect radio, tape player, CD player and CD

auto changer connector C-31.

(2) Turn the ignition switch to "ACC" position.
(3) Measure the voltage between terminal 10 and ground by

backprobing.

Q: Is the voltage approximately 12 volts (battery positive

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

STEP 2. Check radio, tape player, CD player and CD auto
changer connector C-31 for damage.
Q: Are radio and CD player and CD auto changer

connector C-31 in good condition?
YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. If the power switch is

turned on, the radio and CD player and CD auto
changer should operate normally.

AC003082AD

JUNCTION BLOCK
(FRONT VIEW)

CONNECTOR: C-73

AC003080 AB

JUNCTION BLOCK
(REAR VIEW)

CONNECTOR: C-84

1

2

3

4

5

6

7

8

9

10

11

12

13

14

ACX01854AD

CONNECTOR C-31

(HARNESS SIDE)

AC003089

CONNECTOR: C-31

AT

RADIO WITH TAPE PLAYER AND CD PLAYER

TSB Revision

CHASSIS ELECTRICAL

54A-91

STEP 3. Check the harness wires between radio, tape
player, CD player and CD auto changer connector C-31 and
ignition switch (ACC).
NOTE: After inspecting intermediate connector C-66 and
junction block connectors C-73 and C-84, inspect the wire. If
intermediate connector C-66 and junction block connectors C-
73 and C-84 are damaged, repair or replace them. Refer to
GROUP 00E, Harness Connector Inspection

P.00E-2

.

Q: Are the harness wires between radio, tape player, CD

player and CD auto changer connector C-31 and ignition
switch (ACC) in good condition?
YES : There is no action to be taken.
NO : repair them. If the power switch is turned on, the

radio, tape player, CD player and CD auto changer
should operate normally.

AC003089

CONNECTOR: C-31

AT

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

AC003082AD

JUNCTION BLOCK
(FRONT VIEW)

CONNECTOR: C-73

AC003080 AB

JUNCTION BLOCK
(REAR VIEW)

CONNECTOR: C-84

TSB Revision

CHASSIS ELECTRICAL

RADIO WITH TAPE PLAYER AND CD PLAYER

54A-92

STEP 4. Check that the radio, tape player, CD player, and
the CD auto changer are installed correctly.

NOTE: The radio, tape player, CD player and CD auto changer
are grounded to the instrument panel center reinforcement
directly.

Q: Are the radio, tape player, CD player and CD auto

changer installed correctly?
YES : Repair or replace the radio, tape player, CD player

and CD auto changer. If the power switch is turned
on, the radio, tape player, CD player and CD auto
changer should operate normally.

NO : Install properly If the power switch is turned on, the

radio, tape player, CD player and CD auto changer
should operate normally.