Mitsubishi Galant 9G. Manual — part 1587
MULTI-CENTER DISPLAY
TSB Revision
CHASSIS ELECTRICAL
54A-220
Compass check
1. Choose "Compass check" from the service mode start-up
screen by pressing function button switch 2, and then
execute a check by pressing function button switch 3.
2. The multi-center display performs check and then displays
the check result.
.
Vehicle check
1. Choose "vehicle check" from the service mode start-up
screen by pressing function button switch 2, and then
execute a check by pressing function button switch 3.
2. The multi-center display performs check and displays the
check result. Operate the lighting switch or the ignition
switch. Check whether the multi-center display screen
corresponds to that operation.
.
CHECK ITEM DISPLAY CONTENT OR CONDITION
Communicati
on check with
compass
sensor
• OK
• NG
OK:
−
NG: Open circuit, or
communication error
caused by failure in
relevant unit(s)
BACK
ENTER
Service mode
1. Communication check
2. Monitor check
3. Compass check
4. Vehicle check
5. Auto check
AC208703 AB
Communication check result
Compass sensor
ENTER
AC208704
AB
CHECK ITEM DISPLAY CONTENT OR CONDITION
Illumination
ILL: ON If the lighting switch is ON
ILL:
OFF
If the lighting switch is OFF
ignition
switch
position
• IG
• ACC
Displays the current
position of the ignition
switch.
Battery
positive
voltage
Displays the voltage.
BACK
ENTER
Service mode
1. Communication check
2. Monitor check
3. Compass check
4. Vehicle check
5. Auto check
AC208705AB
Vehicle signal check
ILL : OFF
Key position : ACC
Voltage : 14.9V
ENTER
AC208706AB
MULTI-CENTER DISPLAY
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CHASSIS ELECTRICAL
54A-221
Auto check
1. Activate the service mode start-up screen.
2. Turn the ignition switch to "ON" position.
. 3. Choose "Auto check" by pressing function button switch 2.
4. Execute "ENTER" by pressing the function button switch 3.
5. The multi-center display unit checks the communication
condition, and then shows the check results of
"Communication check", "Monitor check", "Compass check",
and "Vehicle check". Then the multi-center display ceases
CAN communication in approximately seven seconds.
.
Release of service mode
Move from the check result screen to the service mode start-up
screen by pressing "ENTER" above function button switch 3. If
you press "BACK" above function button switch 1 during pro-
cessing, the checks will be cancelled and the screen returns to
service mode start-up screen.
Fail-safe function of the multi-center display unit
(middle grade type)
If abnormal power supply voltage or abnormally high tempera-
ture is detected in the multi-center display unit (middle grade
type), a fail-safe function will be activated to protect the unit,
and then blank the screen.
Fail-safe function is activated when:
Power supply voltage is abnormal
• Excessively low voltage: Power supply voltage remains
9 volts or less for approximately 10 seconds.
• Excessively high voltage: Power supply voltage remains
17 volts or more for approximately 10 seconds.
Abnormally high temperature is detected in the unit.
• Internal temperature remains 95°C (203°F) for 60 sec-
onds.
If an abnormal voltage or temperature is detected, the
multi-center display unit will sound its buzzer to indicate this
and activate a message to blank the screen in approximately
seven seconds.
NOTE: The unit blanks the screen immediately when the power
supply voltage reaches 18 volts.
Fail-safe function is deactivated when:
Power supply voltage is abnormal
• The fail-safe function will be deactivated if the power
supply voltage remains 10 volts or more for approxi-
mately five seconds, or the ignition switch is turned to
the "LOCK" (OFF) position.
• The fail-safe function will be deactivated if the power
supply voltage remains 17 volts or less for approxi-
mately five seconds or more, or the ignition switch is
turned to the "LOCK" (OFF) position.
Abnormally high temperature is detected in the unit.
• 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.
BACK
ENTER
Service mode
1. Communication check
2. Monitor check
3. Compass check
4. Vehicle check
5. Auto check
AC208707AB
MULTI-CENTER DISPLAY
TSB Revision
CHASSIS ELECTRICAL
54A-222
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
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
MULTI-CENTER DISPLAY
TSB Revision
CHASSIS ELECTRICAL
54A-223
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
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
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