Mitsubishi Galant 9G. Manual — part 1596

MULTI-CENTER DISPLAY

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CHASSIS ELECTRICAL

54A-256

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CIRCUIT OPERATION

The multi-center display unit (middle grade type) is
energized by the battery through the ignition switch
(ACC) and (IG1).

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TECHNICAL DESCRIPTION (COMMENT)

The ground circuit, the battery circuit, the ignition
switch (ACC) circuit or the ignition switch (IG1) circuit
is suspected to be open or defective.

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TROUBLESHOOTING HINTS

• Malfunction of the multi-center display unit (mid-

dle grade type)

• Damaged wiring harness and connectors

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AC305231CI

CONNECTORS: C-01, C-03, C-29

C-01

C-03

C-29

AC305233

C-05 (B)

CK

CONNECTOR: C-05

AC305415

CONNECTORS: C-211, C-215

JUNCTION BLOCK
(FRONT VIEW)

C-215

C-211

BA

MULTI-CENTER DISPLAY

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CHASSIS ELECTRICAL

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DIAGNOSIS

Required Special Tool:

• MB991223: Harness Set

STEP 1. Check the multi-center display unit (middle grade
type) ground circuit. Measure the resistance at the
multi-center display unit (middle grade type) connector
C-05.
(1) Disconnect the multi-center display unit (middle grade type)

connector C-05 and measure at the harness side.

(2) Measure the resistance between terminal 6 and ground.

• The measured value should be 2 ohm or less.

Q: Does the measured resistance value correspond with

this range?
YES : Go to Step 4.
NO : Go to Step 2.

STEP 2. Check the multi-center display unit (middle grade
type) connector C-05 for loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Q: Is the multi-center display unit (middle grade type)

connector C-05 in good condition?
YES : Go to Step 3.
NO : Repair or replace the connector. Refer to GROUP

00E, Harness Connector Inspection

P.00E-2

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AC305233

HARNESS SIDE

C-05 (B)

CJ

CONNECTOR: C-05

AC209364

CONNECTOR C-05
(HARNESS SIDE)

JU

AC305233

HARNESS SIDE

C-05 (B)

CJ

CONNECTOR: C-05

MULTI-CENTER DISPLAY

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CHASSIS ELECTRICAL

54A-258

STEP 3. Check the wiring harness between multi-center
display unit (middle grade type) connector C-05 (terminal
6) and ground.

NOTE: After checking joint connector (2) C-03 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. check the wires. If joint connector (2) C-03 is dam-
aged, repair or replace the wiring harness. Refer to GROUP
00E, Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between multi-center display unit

(middle grade type) connector C-05 (terminal 6) and
ground in good condition?
YES : There is no action to be taken.
NO : Repair the wiring harness. The multi-center display

unit (middle grade type) should work normally.

STEP 4. Check the multi-center display unit (middle grade
type) power supply circuit (battery). Measure the voltage at
the multi-center display unit (middle grade type) connector
C-05.
(1) Disconnect the multi-center display unit (middle grade type)

connector C-05 and measure at the harness side.

(2) Measure the voltage between terminal 1 and ground.

• The measured value should be approximately 12 volts

(battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES : Go to Step 7.
NO : Go to Step 5.

AC305233

HARNESS SIDE

C-05 (B)

CJ

CONNECTOR: C-05

AC305231BP

CONNECTOR: C-03

AC305233

HARNESS SIDE

C-05 (B)

CJ

CONNECTOR: C-05

AC209365

CONNECTOR C-05
(HARNESS SIDE)

HY

MULTI-CENTER DISPLAY

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CHASSIS ELECTRICAL

54A-259

STEP 5. Check multi-center display unit (middle grade
type) connector C-05 for loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Q: Is multi-center display unit (middle grade type)

connector C-05 in good condition?
YES : Go to Step 6.
NO : Repair or replace the connector. Refer to GROUP

00E, Harness Connector Inspection

P.00E-2

. The

multi-center display unit (middle grade type) should
work normally.

STEP 6. Check the wiring harness between C-05 (terminal
1) and battery.

NOTE: Also check intermediate connector C-29 and joint con-
nector (1) C-01 for loose, corroded, or damaged terminals, or
terminals pushed back in the connector. If intermediate connec-
tor C-29 and joint connector (1) C-01 is damaged, repair or
replace the wiring harness. Refer to GROUP 00E, Harness
Connector Inspection

P.00E-2

.

Q: Is the wiring harness between C-05 and battery in good

condition?
YES : There is no action to be taken.
NO : Repair the wiring harness. The multi-center display

unit (middle grade type) should work normally.

AC305233

HARNESS SIDE

C-05 (B)

CJ

CONNECTOR: C-05

AC305233

HARNESS SIDE

C-05 (B)

CJ

CONNECTOR: C-05

AC305232

CONNECTORS: C-01, C-29

C-01

C-29

AS

C-01

C-29