Mitsubishi Galant (2004+). Manual - part 1454

 

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Mitsubishi Galant (2004+). Manual - part 1454

 

 

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-59

STEP 1. Using scan tool MB991958, diagnose the CAN bus 
line.
Use scan tool MB991958 to diagnose the CAN bus lines.
(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-621

). 

STEP 2. Recheck for diagnostic trouble code.
Recheck if the DTC is set.

1. Erase the DTC.
2. Turn the ignition switch to "ON" position.
3. Check if the DTC is set.

Q: Is the check result satisfactory?

YES : 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 combination meter. 

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-60

DTC U1100: Powertrain Control Module Time-out (Related to Engine) DTC U1101: Powertrain Control 
Module Time-out (Related to A/T)

CAUTION

If DTC U1100 or U1101 is set in the combination 
meter, always diagnose the CAN bus lines.

CAUTION

Whenever the ECU is replaced, ensure that the 
communication circuit is normal.

.

CIRCUIT OPERATION
 Refer to 

P.54A-57

.

.

DTC SET CONDITION

U1100

• The combination meter receives engine control 

system-related signals from the powertrain con-
trol module via CAN bus lines. If the display unit 
can not receives the necessary signals, DTC 
U1100 will be set.

U1101

• The combination meter receives A/T control sys-

tem-related signal from the powertrain control 
module via CAN bus lines. If the display unit can 
not receive the necessary signals, DTC U1101 
will be set.

.

TECHNICAL DESCRIPTION (COMMENT)

CAUTION

If the ignition switch is turned to the ON position 
without starting the engine, DTC (past trouble) 
017 and 018  may be set on the combination 
meter (incorporating meter-ECU) after three min-
utes.

Current trouble

• Connector(s) or wiring harness in the CAN bus 

lines between the powertrain control module and 
the combination meter, the power supply system 
to the powertrain control module, the powertrain 
control module itself, or the combination meter 
may be defective.

Past trouble

• Carry out diagnosis with  particular emphasis on 

connector(s) or wiring harness in the CAN bus 
lines between the powertrain control module and 
the combination meter, and the power supply 
system to the powertrain control module. For 
diagnosis procedures, refer to "How to cope with 
past trouble" (Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

P.00-6

).

NOTE: For a past trouble, you may not find it by 
the MUT-III CAN bus diagnostics even if there is 
any failure in CAN bus lines. In this case, refer to 
GROUP 00, How to Use Troubleshooting/Inspec-
tion Service Points-How to Cope with Intermittent 
Malfunctio

P.00-6

.) and check the CAN bus 

lines. You can narrow down the possible cause of 
the trouble by referring to the DTC, which is set 
regarding the CAN communication-linked ECUs 
(Refer to GROUP 54C, CAN bus line Diagnostics 
Flow 

P.54C-6

).

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have 

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

• Malfunction of powertrain control module.

• Malfunction of combination meter

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)

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-61

STEP 1. Using scan tool MB991958, diagnose the CAN bus 
line.
Use scan tool MB991958 to diagnose the CAN bus lines.
(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 6.

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

YES : Diagnose the MFI system by referring to GROUP 

13A, MFI Diagnosis 

− Diagnostic Trouble Code Chart 

P.13A-34

 or GROUP 13B, MFI Diagnosis 

− 

Diagnostic Trouble Code Chart 

P.13B-33

.

NO :  Go to Step 3.

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-62

STEP 3. Using scan tool MB991958, read the diagnostic 
trouble code related to the other system.
Check if a DTC, which relates to CAN communication-linked 
systems below, is set.
ABS-ECU

• DTC U1100: Powertrain control module time-out (related 

to Engine) <vehicles with TCL>

• DTC U1101: Powertrain control module time-out (related 

to automatic transmission) <vehicles with TCL>

Multi-center display

• DTC 011: Powertrain control module time-out (related to 

Engine)

• DTC 012: Powertrain control module time-out (related to 

A/T)

ETACS-ECU

• DTC 011: Powertrain control module time-out (related to 

Engine)

• DTC 012: Powertrain control module time-out (related to 

A/T)

A/C-ECU

• DTC U1100: Powertrain control module time-out (related 

to Engine)

Q: Is the DTC set?

YES : Go to Step 4.
NO :  Go to Step 5.

STEP 4. Recheck for diagnostic trouble code.
Recheck if the DTC is set.

1. Erase the DTC.
2. Turn the ignition switch to "ON" position.
3. Check if the DTC is set.

Q: Is the check result satisfactory?

YES : A poor connection, open circuit or other intermittent 

malfunction is present in the CAN bus lines between 
the powertrain control module and the combination 
meter (Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points-How to 
Cope with Intermittent Malfunction 

P.00-6

).

NO :  Replace powertrain control module and then go to 

Step 6.

 

 

 

 

 

 

 

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