Mitsubishi Pajero Pinin. Manual - part 341

CHASSIS ELECTRICAL – 

Multi-Center Display <High Grade>

54A-80

MULTI-CENTER DISPLAY <HIGH GRADE>

TROUBLESHOOTING

NOTES WITH REGARD TO SERVICE PROCEDURES

1.

Before removing the battery
The multi-center display has a large amount of data stored in memory which the user enters over
time. When the terminals are disconnected from the battery, the memory which stores this data is
affected as shown in the table below. Accordingly, it is necessary to make sure that you take notes
of important information before disconnecting the battery.

Function

Input function

When battery is disconnected

Radio function

Channels which are selected during a search

Disappear after a few seconds

Preset channels

Do not disappear

Navigation function

Current location

Recommended route

Destination

Route search conditions

Sensor initialization data

Language selection setting

Guidance volume setting

Data search function,
data display and input

Registered location names

data  display and input
functions

Past destinations

Average fuel consumption, average speed,
cruising range

Disappear after a few seconds

Clock display function

Current time

Vehicle model settings
for travel data

Setting details for vehicle model

Monitor backlight 
luminance setting

Luminance setting value

2.

Notes on trouble diagnosis relating to the overall system

(1) If a problem occurs which seems like all of the functions have developed an abnormality simultaneously,

the cause is most likely a communication abnormality between the various systems. Thus you should
use the communication checking service function in the trouble diagnosis service functions in order
to verify the cause.

CHASSIS ELECTRICAL – 

Multi-Center Display <High Grade>

54A-81

(2) If the above is not the problem, check the connections of the related harness connectors. If a malfunctioning

location is discovered, repair it and then re-check the trouble symptoms.

(3) If there are no abnormalities in the harness connections, check the harnesses themselves. If there

are no abnormalities in the harnesses, replace the relevant unit. Make a note of any error codes
and service function data generated at this time.

NOTE
If the cause of the problem seems to be related to system communication, carry out troubleshooting.

3.

Notes on trouble diagnosis when only specific functions are abnormal

(1) If only certain functions are showing an abnormality, use the audio checking function of the service

functions to check the hardware switches.

(2) If the switch functions are normal, check the connections of the related harness connectors. If a

malfunctioning location is discovered, repair it and then re-check the trouble symptoms.

(3) If there are no abnormalities in the harness connections, check the harnesses themselves. If there

are no abnormalities in the harnesses, replace the unit which controls that function.

4.

Notes on trouble diagnosis of the navigation function

(1) The vehicle positioning accuracy of the navigation function is limited because of the principle of operation

which it uses. Because of this, the system may be operating normally even though customers might
be reporting a problem.
Before carrying out troubleshooting, get as much information as possible from the customer regarding
things such as usage conditions and driving locations. If it is possible to judge from this that the problem
is not caused by a system abnormality, explain the principle of operation used by the navigation function
and how to utilize it effectively.

(2) If you find that there is a system abnormality, check according to the Inspection Chart Classified by

Trouble Symptoms in the Troubleshooting section.

MITSUBISHI MULTI COMMUNICATION SYSTEM DISPLAY PANEL

F1 switch

F2 switch

F3 switch

F4 switch

F5 switch

F6 switch

CHASSIS ELECTRICAL – 

Multi-Center Display <High Grade>

54A-82

TROUBLE DIAGNOSIS SERVICE FUNCTIONS

The Multi-center Display is equipped with the following trouble diagnosis service functions.

Function

Contents

Diagnosis function

During normal use, this function constantly monitors the system communication  lines,
and displays an error if it finds any abnormalities.

CD-ROM checking function

This function displays a message if it cannot read the CD-ROM or if no CD-ROM is
inserted.

Service functions

1.

Monitor checking

2.

Audio checking

3.

Automatic diagnosis by
mode

4.

Self-diagnosis

D

Wiring and commu-
nication checking

D

Sensor checking

D

Vehicle signals

D

Version data

5.

Diagnosis recording

There are five checking modes available: monitor checking, audio checking, automatic
checking by mode, self-diagnosis and diagnosis recording.
This mode checks that the image display function is operating normally.
This mode checks that the speakers and operating switches of the audio system are
all working normally.
In this mode, wiring and communication checking, audio checking, sensor checking
and vehicle signal checking are carried out continuously.
This mode includes functions such as wiring and communication checking, sensor
checking, vehicle signals and version data checking.
This checks system communication between all units.

This checks all of the sensors that are necessary to the navigation system.
This displays the current vehicle signal condition.
This displays the version numbers for each unit in the Multi Center Display.
This mode displays error codes from communication checking. (Error codes are
erased when the ignition switch is turned to OFF.)

1.

ACTIVATING AND ENDING SERVICE MODE

(1) Activating service mode can be carried out by turning

the ignition switch to the ON position while pressing the
DISP switch on the audio unit and the F6 switch. (Continue
pressing each switch for at least 5 seconds after turning
the ignition switch to ON.)

(2) If the special CD-ROM has been inserted into the

navigation unit but the program has not been set up, the
program will then be loaded from the CD-ROM. Service
mode can be used once this process is completed.

NOTE
The special CD-ROM is a map CD-ROM which a distributor
vends.

CHASSIS ELECTRICAL – 

Multi-Center Display <High Grade>

54A-83

(3) If the F1 switch is pressed at the service mode initial screen,

service mode will be ended and the screen will change to
navigation mode.

2.

AUTOMATIC DIAGNOSIS BY MODE

(1) If the F3 switch is pressed at the service mode screen,

automatic diagnosis by mode will start.

(2) A colored bar will appear on the screen of the Multi-center

Display unit, and all units which are connected to the
navigation unit will be checked during this time.

(3) Once the transmission checking is completed, the results

of the wiring and transmission checking will appear on the
screen.
After checking the results, press the F1 switch to proceed
to the next check. The next check will start when the switch
is pressed.

NOTE
1) If the fuel gauge and the engine-ECU are checked

while the ignition switch is at ACC, an error will be
generated, but this is not a sign of an abnormality.

2) If checking is carried out while the fuel tank is full

or the while ignition switch is at ACC, the fuel gauge
may be shown to be not connected, but this is not
a sign of an abnormality.