Mitsubishi Galant 9G. Manual — part 1551

COMBINATION METER ASSEMBLY

TSB Revision

CHASSIS ELECTRICAL

54A-76

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A (Vehicles with CAN

communication system)

STEP 1. Check that the powertrain control module
communicates with the scan tooI.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to "ON" position.
(3) Check if scan tool MB991958 can communicate with the

powertrain control module.

Q: Is the check result satisfactory?

YES : Go to Step 2.
NO : Refer to GROUP 13A, MFI Diagnosis

− Diagnostic

Trouble Code Chart

P.13A-33

or GROUP 13B, MFI

Diagnosis

− Diagnostic Trouble Code Chart

P.13B-34

.

STEP 2. Using scan tool MB991958, diagnose the CAN bus
line
Use scan tool MB991958 to diagnose the CAN bus lines.
Q: Is the check result satisfactory?

YES : Diagnose the power supply circuit. Refer to

P.54A-77

.

NO : Repair the CAN bus lines (Refer to GROUP 54C,

Diagnosis

− Can Bus Diagnostic Chart

P.54C-14

).

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

COMBINATION METER ASSEMBLY

TSB Revision

CHASSIS ELECTRICAL

54A-77

INSPECTION PROCEDURE 2: Power Supply Circuit. INSPECTION PROCEDURE 3: Odometer and trip
meter are not displayed. INSPECTION PROCEDURE 4: All the needle meters do not work.
INSPECTION PROCEDURE 5: When the ignition switch is turned to the ON position, the indicator and
warning lights do not illuminate.

BATTERY

RELAY
BOX

JOINT
CONNECTOR (2)

JOINT
CONNECTOR (1)

JUNCTION
BLOCK

COMBINATION
METER

RHEOSTAT
CIRCUIT

LCD
ODO/TRIP

IGNITION
SWITCH (IG1)

ODO/TRIP
SWITCH

MAIN
CLOCK

SUB
CLOCK

SPEED-
METER

TACHO
METER

FUEL
GAUGE

TEMP
GAUGE

CPU

Combination Meter Power Supply Circuit

COMBINATION METER ASSEMBLY

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CHASSIS ELECTRICAL

54A-78

.

CIRCUIT OPERATION

The combination meter is energized by the battery
through ignition switch (IG1).

.

TECHNICAL DESCRIPTION (COMMENT)

If the odometer and trip meter are not displayed or all
meter needles don't move, power supply and ground
system to the combination meter, or the combination
meter itself may be defective.

.

Possible causes

• The wiring harness or connectors may have

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

• Malfunction of the combination meter

DIAGNOSIS

Required Special Tool:

• MB991223: Harness set

STEP 1. Check combination meter connector C-101 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is combination meter connector C-101 in good

condition?
YES : Go to Step 2.
NO : Repair or replace the component(s). Refer to GROUP

00E, Harness Connector Inspection

P.00E-2

. The

combination meter works normally.

AC305231CV

CONNECTORS: C-01, C-03, C-29, C-101

C-01

C-03

C-29

C-101

AC305415

CONNECTORS: C-211, C-215

JUNCTION BLOCK
(FRONT VIEW)

C-215

C-211

BA

AC305231CT

CONNECTOR: C-101

HARNESS SIDE

COMBINATION METER ASSEMBLY

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CHASSIS ELECTRICAL

54A-79

STEP 2. Measure at combination meter connector C-101 in
order to power supply circuit to combination meter
(battery power supply).
(1) Disconnect combination meter connector C-101, and

measure at the wiring harness side.

(2) Turn the ignition switch to "LOCK" (OFF) position.

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

• The voltage should measure approximately 12 volts

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 4.
NO : Go to Step 3.

STEP 3. Check the wiring harness between combination
meter connector C-101 (terminal 1) and the fuse No.22.

AC305231CT

CONNECTOR: C-101

HARNESS SIDE

AC209365

CONNECTOR C-101
(HARNESS SIDE)

HT

AC305232

CONNECTORS: C-01, C-29, C-101

C-124

AY

C-01

HARNESS SIDE

C-101

C-29

C-29

C-01