Mitsubishi Galant (2004+). Manual - part 1461

 

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Mitsubishi Galant (2004+). Manual - part 1461

 

 

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-87

INSPECTION PROCEDURE 6: Speedometer does not Work. INSPECTION PROCEDURE 7: The Fuel 
Gauge Needle Moves Excessively.

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

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)

JOINT 
CONNECTOR (3)

COMBINATION 
METER

ABS-ECU OR ABS/TCL-ECU

DATA LINK CONNECTOR

POWERTRAIN CONTROL MODULE

SPEED 
METER

CPU

OUTPUT 
SHAFT 
SPEED 
SENSOR

TO IGNITION
SWITCH (IG1)

Speed Meter Circuit

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-88

CAUTION

When the battery cable is disconnected or the 
combination meter is removed, the fuel gauge 
learned value will be erased. To let the display 
unit re-learn it, enter the vehicle speed (by driv-
ing the vehicle or entering simulated vehicle 
speed) and then stop the vehicle.

.

CIRCUIT OPERATION
The output shaft speed sensor sends vehicle signal 
to the combination meter via the powertrain control 
module and the CAN bus line.

.

TECHNICAL DESCRIPTION (COMMENT)
If only the speedometer does not operate, the 
powertrain control module system, the combination 
meter, the wiring harness or its connector may be 
defective. Furthermore, incorrect level of fuel is 
shown on the gauge, because the display unit can 
not learn the fuel gauge.

.

TROUBLESHOOTING HINTS

• Malfunction of the combination meter. 

• Malfunction of the powertrain control module.

• 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

B-19 (B)

B-22 (B)

B-107 (GR)

CONNECTORS: B-19, B-22, B-107

AE

AC305231

C-02

C-29

C-101

DD

CONNECTORS: C-02, C-29, C-101

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-89

STEP 1. Using scan tool MB991958, diagnose the CAN bus 
line.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to "ON" position.
(3) Diagnose the CAN bus line.
Q: Is the check result satisfactory?

YES : Go to Step 2.
NO :  Repair the CAN bus lines (Refer to GROUP 54C, 

Diagnosis-Can Bus Diagnostic Chart 

P.54C-14

). On 

completion, go to Step 4.

STEP 2. Using scan tool MB991958, read A/T diagnostic 
trouble code.
Check if an A/T system DTC is set.
Q: Is the DTC set?

YES : Refer to GROUP 23A, Automatic Transaxle 

Diagnosis 

− Diagnostic Trouble Code Chart 

P.23A-43

. On completion, go to Step 4.

NO :  Go to Step 3.

STEP 3. Check the speedometer
Use scan tool MB991958 to enter simulated vehicle speed.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to "ON" position.
(3) Select "Interactive Diagnosis" from the start-up screen.
(4) Select "System Select."
(5) Choose "Meter" from the "BODY" tab.
(6) Select "Simulated vehicle Speed Output."

OK: The speedometer shows that simulated vehi-
cle speed.

Q: Is the check result satisfactory?

YES : Go to Step 4.
NO :  Replace the combination meter, then go to Step 4.

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-90

STEP 4. Retest the system.
Check that the speedometer works normally.
Q: Is the check result satisfactory?

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 :  Go to step 1.

 

 

 

 

 

 

 

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