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.
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