Mitsubishi Galant 9G. Manual — part 1589

MULTI-CENTER DISPLAY

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CHASSIS ELECTRICAL

54A-228

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-225

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.00-14

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 Intermit-
tent Malfunction

P.00-14

.) 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 communica-
tion-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 multi-center display unit (middle

grade type)

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CHASSIS ELECTRICAL

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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-789

or GROUP 13B, Diagnosis

− Diagnostic

Trouble Code Chart

P.13B-853

NO : Go to Step 3.

AC305412

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

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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.00-14

NO : Replace powertrain control module and then go to

step 6.