Mitsubishi Galant (2004+). Manual — part 1498

MULTI-CENTER DISPLAY

TSB Revision

CHASSIS ELECTRICAL

54A-235

• The fail-safe function will be deactivated if its internal

temperature has reduced to 85

°C (185°F) or less, or the

ignition switch is turned to the "LOCK" (OFF) position.

DIAGNOSIS FUNCTION

M1543007000465

ON-BOARD DIAGNOSTICS

The multi-center display (middle grade type) moni-
tors its input/output signals (some signals all the time
and others under specified conditions). When an
irregular signal is initially monitored, the multi-center
display (middle grade type) decides that a malfunc-
tion has occurred and records the occurrence as a
diagnostic trouble code. There are 9 diagnostic
items. The diagnostic results can be read with a scan
tool MB991958 (MUT-III sub assembly). Diagnostic
trouble codes are kept in memory by direct battery
feed. The codes are retained in memory even if the
ignition switch is in the "LOCK" (OFF) position. Diag-

nostic trouble codes will, however, be erased when a
battery terminal or the multi-center display (middle
grade type) connector is disconnected. In addition,
the diagnostic trouble code can also be erased by
scan tool MB991958 (MUT-III sub assembly).
NOTE: If a connector or sensor is disconnected
when the ignition switch is in the "ON" position, a
diagnostic trouble code is stored in memory. In this
case, erase the DTC using the scan tool.
NOTE: The 9 diagnostic items are displayed in
numeric order.

HOW TO CONNECT SCAN TOOL (MUT-III)

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)

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Ensure that the ignition switch is at the "LOCK" (OFF)

position.

2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824

and the personal computer.

4. Connect special tool MB991910 to special tool MB991824.
5. Connect special tool MB991910 to the data link connector.
6. Turn the power switch of special tool MB991824 to the "ON"

position.
NOTE: When special tool MB991824 is energized, special
tool MB991824 indicator light will be illuminated in a green
color.

7. Start the MUT-III system on the personal computer.

NOTE: Disconnecting the scan tool MB991958 is the
reverse of the connecting sequence, making sure that the
ignition switch is at the "LOCK" (OFF) position.

AC305412

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTI-CENTER DISPLAY

TSB Revision

CHASSIS ELECTRICAL

54A-236

HOW TO READ AND ERASE DIAGNOSTIC
TROUBLE CODES

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)

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
NOTE: If the battery voltage is low, diagnostic trouble codes will
not be set. Check the battery if scan tool MB991958 does not
display.
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 "Display" from the "BODY" tab.
6. Select "Diagnostic Trouble Code."
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.

AC305412

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTI-CENTER DISPLAY

TSB Revision

CHASSIS ELECTRICAL

54A-237

DIAGNOSTIC TROUBLE CODE CHART

M1545001100039

NOTE: During diagnosis, a DTC code associated
with other system may be set when the ignition
switch is turned on with connector(s) disconnected.
On completion, confirm all systems for DTC code(s).
If DTC code(s) are set, erase them all.

DTC NO.

DIAGNOSTIC ITEM

REFERENCE PAGE

010

Bus off

P.54A-238

011

Powertrain control module time-out (related to engine)

P.54A-241

012

powertrain control module time-out (related to A/T)

013