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,
p
p
Registered location names
a
a
sp
ay an
npu
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.
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