Mitsubishi Galant (2004+). Manual - part 1500

MULTI-CENTER DISPLAY

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CHASSIS ELECTRICAL

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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>

Combination meter

• DTC 011: Power train control module time-out (related 

to Engine)

• DTC 012: Power train control module time-out (related 

to A/T)

ETACS-ECU

• DTC 011: Power train control module time-out (related 

to Engine)

• DTC 012: Power train control module time-out (related 

to A/T)

A/C-ECU

• DTC U1100: Power train 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 middle-grade 
multi-center display unit (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.

MULTI-CENTER DISPLAY

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CHASSIS ELECTRICAL

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STEP 5. 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 middle-grade 
multi-center display unit (Refer to GROUP 00, How to 
Use Troubleshooting/Inspection Service Points-How 
to Cope with Intermittent Malfunction 

P.00-6

).

NO :  Replace multi-center display unit (middle grade type) 

and then go to step 6.

STEP 6. 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.

MULTI-CENTER DISPLAY

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DTC 013: A/C-ECU Time-out

POWERTRAIN
CONTROL MODULE

JOINT
CONNECTOR (3)

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)

ABS-ECU OR ABS/TCL-ECU

MULTI-CENTER 
DISPLAY UNIT

COMBINATION
METER

CPU

A/C-ECU

Circuit of Time-out During CAN Communication with A/C-ECU

MULTI-CENTER DISPLAY

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CAUTION

If DTC 013 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) 
communicates with the A/C-ECU via CAN bus lines.

.

DTC SET CONDITION
When the multi-center display unit (middle grade 
type) can not receives necessary signals from the 
A/C-ECU via CAN bus lines. If the display unit can 
not receives the necessary A/C-ECU signals, DTC 
013 will be set.

.

TECHNICAL DESCRIPTION (COMMENT)

CAUTION

If the ignition switch is turned to the ON position 
without starting the engine, DTC (past trouble) 
011, 012 and 014 may be set to the combination 
meter (incorporating meter-ECU) after three min-
utes.

Current trouble

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

lines between the A/C-ECU and the multi-center 
display unit (middle grade type), the power sup-
ply system to the display unit, the display unit 
itself, or the A/C-ECU may be defective.

AC305206

CONNECTOR: A-02

AO

A-02 (GR)

AC305216

B-19 (B)

CONNECTOR: B-19

AD

AC305231

C-02

C-29

C-101

DD

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

AC305233

C-15 (B)

BI

CONNECTOR: C-15