Mitsubishi Galant (2004+). Manual - part 1499

 

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Mitsubishi Galant (2004+). Manual - part 1499

 

 

MULTI-CENTER DISPLAY

TSB Revision

CHASSIS ELECTRICAL

54A-239

CAUTION

If DTC 010 is set in the multi-center display, 
always diagnose the CAN bus lines.

CAUTION

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

.

CIRCUIT OPERATION
The multi-center display unit (middle grade type) is 
linked to CAN communication lines to communicate 
with the combination meter and the powertrain con-
trol module, both of which have a terminator resistor.

.

DTC SET CONDITION
If the multi-center display ceases communicating 
once (i.e. bus off) and then returns to it, the 
multi-center display will not communicate for three 
minutes immediately after that point. This 
three-minute period is called "Penalty mode." Imme-
diately after the multi-center display returns to com-
munication, the DTC is set.

.

TECHNICAL DESCRIPTION (COMMENT)
The CAN bus line wiring harness, connector(s), or 
the multi-center display unit (middle grade type) may 
be defective.

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have 

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

• Malfunction of multi-center display unit (middle 

grade type)

AC305206

CONNECTOR: A-02

AO

A-02 (GR)

AC305216

B-19 (B)

CONNECTOR: B-19

AD

AC305233

C-05 (B)

CP

CONNECTOR: C-05

AC305231

C-02

C-29

C-101

C-125 (B)

DC

CONNECTORS: C-02, C-29, C-101, C-125

MULTI-CENTER DISPLAY

TSB Revision

CHASSIS ELECTRICAL

54A-240

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)

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 3.

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 : 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 and then go to step 3.

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTI-CENTER DISPLAY

TSB Revision

CHASSIS ELECTRICAL

54A-241

STEP 3. 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 : The procedure is complete.
NO :  Go to Step 1.

DTC 011: Powertrain Control Module Time-out (Related to Engine) DTC 012: Powertrain Control 
Module Time-out (Related to A/T)

CAUTION

If DTC 011 or 012 is set in the multi-center dis-
play, 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-238

.

.

DTC SET CONDITION

011

• The multi-center display unit (middle grade type) 

receives engine control system-related signals 
from the powertrain control module via CAN bus 
lines. If the display unit can not receives the nec-
essary signals, DTC 011 will be set.

012

• The multi-center display unit (middle grade type) 

receives A/T control system-related signals from 
the power control module via CAN bus lines. If 
the display unit can not receive the necessary 
signals, DTC 012 will be set.

.

TECHNICAL DESCRIPTION (COMMENT)

CAUTION

If the ignition switch is turned to the ON position 
without starting the engine, DTC (past trouble) 
013 and 014 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 multi-center display unit (middle grade type), 
the power supply system to the display unit, the 
display unit itself, or the powertrain control mod-
ule 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 multi-center display unit (middle grade type), 
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/Inspec-
tion 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

).

.

MULTI-CENTER DISPLAY

TSB Revision

CHASSIS ELECTRICAL

54A-242

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 multi-center display unit (middle 

grade type)

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)

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 MFI 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, Diagnosis 

− Diagnostic Trouble Code Chart 

P.13A-753

 or GROUP 13B, Diagnosis 

− Diagnostic 

Trouble Code Chart 

P.13B-796

.

NO :  Go to Step 3.

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

 

 

 

 

 

 

 

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