Infiniti Q45. Manual - part 321

VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITH NAVIGA-

TION SYSTEM

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VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITH NAVIGA-
TION SYSTEM

PFP:28395

Precautions for AV and NAVI Control Unit Replacement

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When replacing the AV and NAVI control unit, eject the map DVD-ROM before disconnecting the battery.

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The AV and NAVI control unit has the following information stored in its memory. Record the memory con-
tents before replacing the control unit, and input them in the new unit as necessary. 

NOTE:
Only removing the battery does not erase the memory.

Precautions for LCD Monitor

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When passenger compartment temperature is low, the LCD monitor sometimes dims because of the
brightness of the back light (small fluorescent light) integrated into the LCD monitor decrease. In this case,
the refreshing rate of the picture also becomes low because of the low response of the LCD monitor.
When passenger compartment becomes warm, however, the LCD recovers the normal display.

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Sometimes, black or bright dots peculiar to LCD monitor can be seen on the display.

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Back light sometimes flickers or darkens according to the total consumption hours and the number of ON
and OFF switching. In this case, the back light should be replaced. (LCD monitor assembly)

System Description

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VEHICLE INFORMATION SYSTEM

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AV and NAVI control unit is received vehicle information system of signals from combination meter.

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AV and NAVI control unit is communicating with BCM and combination meter.

Here is an example of functions. For details, refer to the Owner

′

s Manual.

INTEGRATED SWITCH SYSTEM

Using the multifunction switch at the center of the instrument panel, the controls of the following systems are
centralized:

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Auto A/C system

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Vehicle information system

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Audio system

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Navigation system

The multifunction switch can operate and check the vehicle condition and each setting (vehicle electrical sys-
tem).

<Radio>

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Preset frequency

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Area for indicating station, selection of overlapped stations

<CD>

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Program status

<Sound quality>

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Volume balance memory set values

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Equalizer memory set values

<Image quality>

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Brightness of light when ON/OFF

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Dimming switching

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Display color switching

<Navigation mode> 

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Latest status (MAP screen/BIRD VIEW™, reduced scale, rotation angle 
of map screen, route guide ON/OFF, track ON/OFF, etc.)

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Current position

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Destination, passing point 1 - 5

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Registered places, their names, etc.

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VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITH NAVIGA-

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AV COMMUNICATION LINE

AV and NAVI control unit is connected to the following units by AV communication line. Each unit transmits/
receives data with AV communication line.

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Display

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Multifunction switch

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Audio unit

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BOSE speaker amp. (audio amp.)

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Low tire pressure warning control unit

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Voice activated control module

POWER SUPPLY AND GROUND CIRCUIT

Power is supplied at all times

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through 15A fuse [No. 52, located in fuse, fusible link and relay block (J/B)]

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to AV and NAVI control unit terminals 2 and 3

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to display terminals 21 and 23.

When ignition switch is in ACC or ON position, power is supplied

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through 10A fuse [No. 21, located in fuse block (J/B) No. 1]

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to AV and NAVI control unit terminal 6

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to display terminal 19

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to multifunction switch terminal 1.

Ground is supplied

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to AV and NAVI control unit terminals 1 and 4

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through grounds B17 and B57, and

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to multifunction switch terminal 2

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to display terminals 22 and 24

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through grounds M24 and M114.

Component Parts and Harness Connector Location 

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PKIA6800E

VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITH NAVIGA-

TION SYSTEM

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Schematic — INF/D —

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TKWM1565E

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VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITH NAVIGA-

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Wring Diagram — INF/D —

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TKWM3745E