Mitsubishi Galant (2004+). Manual - part 1464

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

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CHASSIS ELECTRICAL

54A-99

STEP 9. Check fuel pump module connector D-18 and fuel 
level sensor (sub) connector D-17 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Is fuel pump module connector D-18 and fuel level 

sensor (sub) connector D-17 in good condition?
YES : Go to Step 10.
NO :  Repair or replace the component(s). Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

. The fuel 

gauge should now operate normally.

STEP 10. Check the wiring harness between fuel pump 
module connector D-18 (terminal 2) and fuel level sensor 
(sub) connector D-17 (terminal 1).
Q: Is the wiring harness between fuel pump module 

connector D-18 (terminal 2) and fuel level sensor (sub) 
connector D-17 (terminal 1) in good condition?
YES : Go to Step 11.
NO :  Repair the wiring harness. The fuel gauge should now 

operate normally.

AC305269

D-17

D-18 (GR)

AE

CONNECTORS: D-17, D-18

HARNESS SIDE

D-17

HARNESS SIDE

D-18

AC305269

D-17

D-18 (GR)

AE

CONNECTORS: D-17, D-18

HARNESS SIDE

D-17

HARNESS SIDE

D-18

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-100

STEP11. Retest the system.
 Check that the fuel gauge works normally.
Q: Is the fuel gauge normal?

YES : The procedure is complete. (If no malfunctions are 

found in all steps, an intermittent malfunction is 
suspected. Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points-How to 
Cope with Intermittent Malfunction 

P.00-6

).

NO :  Replace the combination meter.

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

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CHASSIS ELECTRICAL

54A-101

INSPECTION PROCEDURE 10: Engine Coolant Temperature Gauge does not Work (other meters 
work).

ABS-ECU OR ABS/TCL-ECU

JOINT
CONNECTOR (3)

COMBINATION
METER

DATA LINK 
CONNECTOR

WITHOUT ELECTRONIC
BRAKE-FORCE
DISTRIBUTION (EBD) 
AND ANTI-LOCK
BRAKING SYSTEM
(ABS)

WITH ELECTRONIC
BRAKE-FORCE
DISTRIBUTION (EBD) 
AND ANTI-LOCK
BRAKING SYSTEM
(ABS)

WITH ELECTRONIC
BRAKE-FORCE
DISTRIBUTION (EBD) 
AND ANTI-LOCK
BRAKING SYSTEM
(ABS)

WITHOUT 
ELECTRONIC
BRAKE-FORCE
DISTRIBUTION 
(EBD) AND ANTI-
LOCK BRAKING 
SYSTEM (ABS)

ENGINE
COOLANT
TEMPERATURE
SENSOR

POWERTRAIN
CONTROL MODULE

TEMP
GAUGE

CPU

Engine Coolant Temperature Gauge Circuit

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

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CHASSIS ELECTRICAL

54A-102

.

CIRCUIT OPERATION
The engine coolant temperature sensor sends signal 
to the combination meter via the powertrain control 
module and the CAN bus line.

.

TECHNICAL DESCRIPTION (COMMENT)
If only the engine coolant temperature gauge does 
not operate, the powertrain control module system, 
the combination meter, the wiring harness or its con-
nector may be defective.

.

TROUBLESHOOTING HINTS

• Malfunction of the powertrain control module.

• Malfunction of the combination meter.

• The wiring harness or connectors may have 

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

DIAGNOSIS 

Required Special Tools:

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

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

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness A (Vehicles with CAN 

communication system)

AC305206

CONNECTOR: A-02

AO

A-02 (GR)

AC305216

CONNECTORS: B-19, B-21, B-22, B-104

AG

B-19 (B)

B-22 (B)

B-21 (B)

B-104 (B)

AC305231

C-02

C-29

C-101

C-125 (B)

DC

CONNECTORS: C-02, C-29, C-101, C-125