radio INFINITI QX4 2005 Factory Service Manual

AV-1
AUDIO, VISUAL, NAVIGATION & TELEPHONE SYS-
TEM
K ELECTRICAL
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SECTION AV
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AV
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Wiring Diagrams and Trouble Diagnosis .................. 4
PREPARATION ........................................................... 5
Commercial Service Tool ......................................... 5
AUDIO ......................................................................... 6
Component Parts and Harness Connector Location ..... 6
System Description .................................................. 7
REAR AUDIO REMOTE CONTROL UNIT ........... 7
SATELLITE RADIO TUNER (PRE-WIRING) ........ 8
SPEED SENSITIVE VOLUME SYSTEM .............. 8
Schematic ................................................................ 9
Wiring Diagram — AUDIO — ................................. 10
Terminals and Reference Value for Audio Unit ....... 19
Terminals and Reference Value for BOSE Speaker
Amp. ....................................................................... 22
Terminals and Reference Value for Rear Audio
Remote Control Unit ............................................... 24
Terminals and Reference Value for AV Switch ....... 25
AV Switch Self-Diagnosis Function ........................ 27
STARTING THE SELF-DIAGNOSIS MODE ....... 27
EXITING THE SELF-DIAGNOSIS MODE ........... 27
DIAGNOSIS FUNCTION ..................................... 27
Trouble Diagnosis .................................................. 28
MALFUNCTION WITH RADIO AND CD ............. 28
FOR RADIO ONLY .............................................. 28
FOR CD ONLY .................................................... 29
Noise Inspection ..................................................... 29
TYPE OF NOISE AND POSSIBLE CAUSE ........ 29
Power Supply Circuit Inspection ............................ 30
Steering Switch Check ........................................... 32
AV Switch Check .................................................... 33
Audio Communication Line Check ......................... 33
Sound Is Not Heard From Front Door Speaker or
Front Tweeter ......................................................... 34
Sound Is Not Heard From Rear Door Speaker or
Rear Door Tweeter ................................................. 38
Sound Is Not Heard From Center Speaker ............ 41Sound Is Not Heard From Subwoofer .................... 42
Removal and Installation for Audio Unit ................. 45
Removal and Installation for AV Switch .................. 45
Removal and Installation of Front Door Speaker .... 45
Removal and Installation of Rear Door Speaker .... 45
Removal and Installation of Front Tweeter ............. 46
Removal and Installation of Rear Door Tweeter ..... 46
Removal and Installation of Center Speaker .......... 46
Removal and Installation of Subwoofer .................. 46
Removal and Installation of BOSE Speaker Amp. ... 46
Removal and Installation of Rear Audio Remote
Control Unit ............................................................. 47
Removal and Installation of Steering Wheel Audio
Control Switches ..................................................... 47
AUDIO ANTENNA .................................................... 48
System Description ................................................. 48
Wiring Diagram — W/ANT — ................................. 49
Location of Antenna ................................................ 50
Window Antenna Repair ......................................... 50
ELEMENT CHECK .............................................. 50
ELEMENT REPAIR ............................................. 51
DVD ENTERTAINMENT SYSTEM ............................ 52
Component Parts and Harness Connector Location ... 52
System Description ................................................. 53
Schematic ............................................................... 54
Wiring Diagram — DVD — ..................................... 55
Trouble Diagnosis ................................................... 58
Power Supply Circuit Inspection ............................. 59
Removal and Installation of DVD Player ................ 60
Removal and Installation of Video Monitor ............. 60
NAVIGATION SYSTEM ............................................. 61
System Description ................................................. 61
TRAVEL DISTANCE ............................................ 61
TRAVEL DIRECTION .......................................... 61
MAP-MATCHING ................................................. 61
GPS (GLOBAL POSITIONING SYSTEM) .......... 62
COMPONENT DESCRIPTION ............................ 63
BIRDVIEW™ ....................................................... 63
MAP DISPLAY ..................................................... 64
FUNCTION OF CENTER SWITCH ..................... 65

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Revision: October 20052005 QX56 Previous NAVI Conditions are Not Stored ............ 146
Previous Vehicle Conditions are Not Stored ........ 146
Position of Current Location Mark is Not Correct . 146
Radio Wave From GPS Satellite is Not Received . 146
Driving Test .......................................................... 147
Example of Symptoms Judged Not Malfunction .. 148
BASIC OPERATION ......................................... 148
VEHICLE MARK ............................................... 148
DESTINATION, PASSING POINTS, AND MENU
ITEMS CANNOT BE SELECTED/SET ............. 149
VOICE GUIDE ................................................... 149
ROUTE SEARCH .............................................. 150
EXAMPLES OF CURRENT-LOCATION MARK
DISPLACEMENT .............................................. 151
CURRENT LOCATION MARK SHOWS A POSI-
TION WHICH IS COMPLETELY WRONG ........ 154
CURRENT-LOCATION MARK JUMPS ............. 154
CURRENT LOCATION MARK IS IN A RIVER OR
SEA ................................................................... 155
WHEN DRIVING ON SAME ROAD, SOME-TIMES CURRENT-LOCATION MARK IS IN
RIGHT PLACE AND SOMETIMES IT IS WRONG
PLACE ...............................................................155
LOCATION CORRECTION BY MAP-MATCH-
ING IS SLOW ....................................................155
ALTHOUGH GPS RECEIVING DISPLAY IS
GREEN, VEHICLE MARK DOES NOT RETURN
TO CORRECT LOCATION ................................155
NAME OF CURRENT PLACE IS NOT DIS-
PLAYED .............................................................155
CONTENTS OF DISPLAY DIFFER FOR BIRD-
VIEW™ AND THE (FLAT) MAP SCREEN ........155
Program Loading of NAVI Control Unit .................156
Removal and Installation of NAVI Control Unit .....157
Removal and Installation of GPS Antenna ...........157
Removal and Installation of Steering Wheel Switch .157
Removal and Installation of AV Switch .................158
Removal and Installation of Display Unit ..............158
Removal and Installation of Display Control Unit . 158

AV-8
AUDIO
Revision: October 20052005 QX56

through audio unit terminals 26, 27, 28 and 29

to terminals 1, 2, 3, and 4 of rear audio remote control unit.
SATELLITE RADIO TUNER (PRE-WIRING)
The satellite radio tuner pre-wiring allows connection of a satellite radio tuner.
Power is supplied at all times

through 20A fuse [No. 31, located in the fuse and fusible link box]

to satellite radio tuner pre-wiring terminal 32.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 4, located in the fuse block (J/B)]

to satellite radio tuner pre-wiring terminal 36.
Ground is supplied through the case of the satellite radio tuner.
Then audio signals are supplied

through satellite radio tuner pre-wiring terminals 21, 22, 23 and 24

to audio unit terminals 41, 42, 43 and 44.
SPEED SENSITIVE VOLUME SYSTEM
Volume level of this system goes up and down automatically in proportion to the vehicle speed. The control
level can be selected by the customer. Refer to Owner's Manual for operating instructions.

AUDIO
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Terminals and Reference Value for Audio UnitEKS00BIB
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
2 (W) 1 (B)Audio sound
signal front
LHOutput ONReceive audio
signalNo sound from front
door speaker LH or
tweeter LH.
4 (Y) 3 (BR)Audio sound
signal front
RHOutput ONReceive audio
signalNo sound from front
door speaker RH or
tweeter RH.
5 (G/W) GroundAntenna
signalOutput ON – More than 10V Poor radio reception.
6 (Y) GroundBattery
powerInput – – Battery voltageSystem does not
work properly.
7 (BR) GroundIllumination
control sig-
nalInput ONIllumination con-
trol switch is
operated by light-
ing switch in 1st
position.Changes between 0 and 12VAudio unit illumina-
tion cannot be con-
trolled.
8 (R/L) GroundIllumination
signalInput OFFLighting switch is
in 1st position.Battery voltageAudio unit illumina-
tion does not come
on when lighting
switch is in 1st posi-
tion. Lighting switch is
OFF.3V or less
9–Shield –– – 0VInterference and dis-
tortion heard from
speakers.
10 (V) Ground ACC signal Input ON – Battery voltageSystem does not
work properly.
12 (G/W) GroundAmp. ON
signalOutput ON – More than 6.5VAmp. does not work
properly.
14 (BR) 13 (B/R)Audio sound
signal rear
LHOutput ONReceive audio
signalNo sound from rear
door speaker LH or
rear door tweeter LH.
16 (L) 15 (B/W)Audio sound
signal rear
RHOutput ONReceive audio
signalNo sound from rear
door speaker RH or
rear door tweeter
RH.
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E

AV-20
AUDIO
Revision: October 20052005 QX56
21 (V) GroundRemote
control AOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
22 (P) GroundRemote
control BOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
23 (BR/Y) GroundRemote
control COutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
24 (L) GroundRemote
control DOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
25 (LG) –Remote
control
ground–– – 0VRear audio remote
control switches do
not function.
27 (O/L) 26 (O)Audio sound
signal LHOutput ONReceive audio
signalNo sound from LH
headphone channel.
29 (W) 28 (W/L)Audio sound
signal RHOutput ONReceive audio
signalNo sound from RH
headphone channel.
30 – Shield – – – 0VInterference and dis-
tortion heard from
headphones or rear
audio remote control
unit switches not
operating properly.
31 (O) GroundRemote
control
enable sig-
nalOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate.
32 (V) GroundRemote
control
switch
power sup-
plyOutput ON Audio unit ON 12VRear audio remote
control unit does not
operate.
42 (R) 41 (G)Audio left
channel
sound sig-
nal from sat-
ellite radio
tunerInput ONReceive audio
signalNo sound from satel-
lite radio tuner left
channel. Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
SKIA0177E
SKIA0177E
SKIA0177E

AUDIO
AV-21
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AV
Revision: October 20052005 QX56
44 (W) 43 (B)Audio right
channel
sound sig-
nal from sat-
ellite radio
tunerInput ONReceive audio
signalNo sound from satel-
lite radio tuner right
channel.
45 –Shield
ground
(audio sig-
nal)–– – 0V –
46 –Shield
ground
(data)–– – 0V –
48 (L) GroundSatellite
radio tuner
request to
audio unitInput ONTurn audio unit
ON 5VSatellite radio tuner
does not operate
properly.
49 (O/L) Ground Audio RX Input ONOperate audio
volume Satellite radio tuner
audio information
does not display
properly.
50 (W/L) Ground Audio TX Output ONOperate audio
volume Satellite radio tuner
audio information
does not display
properly.
65 (O/L) Ground Audio RX Input ONOperate audio
volume Audio does not oper-
ate properly.
66 (W/L) Ground Audio TX Output ONOperate audio
volume Audio does not oper-
ate properly.
67 – Shield – ON – 0VInterference and dis-
tortion heard from
speakers.
70 – Shield – – – 0VInterference and dis-
tortion heard from
speakers. Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
SKIA0177E
SKIA4403E
SKIA4402E
SKIA4403E
SKIA4402E

AV-28
AUDIO
Revision: October 20052005 QX56
Trouble DiagnosisEKS00BIG
The majority of the audio troubles are the result of outside causes (bad CD, electromagnetic interference,
etc.). Check the inspection items below to diagnose the malfunction.
MALFUNCTION WITH RADIO AND CD
Before proceeding, confirm that other AV switch functions (except audio functions) operate. If not, refer to AV-
145, "Unable to Operate All of AV Switches (Unable to Start Self-Diagnosis)" .
FOR RADIO ONLY
Symptom Possible cause
Inoperative

Audio unit power circuit check. Refer to AV-30, "Power Supply Circuit
Inspection" .

Audio communication line check. Refer to AV-126, "Audio Communication
Line Check (Between Display Control Unit and Audio Unit)" .

AV switch check. Refer to AV- 3 3 , "AV S w i tc h C h e c k" .
If above check is OK, replace audio unit.
Steering switch does not operate

Steering switch check. Refer to AV-32, "Steering Switch Check" .

AV switch check. Refer to AV- 3 3 , "AV S w i tc h C h e c k" .
If above check is OK, replace audio unit.
Audio information is not displayed on screen (with
NAVI)

Display unit check. Refer to AV-101, "Self-Diagnosis Mode (DCU)" .
All speakers do not sound

Audio unit

BOSE speaker amp. power supply and ground circuit check. Refer to AV- 3 0 ,
"Power Supply Circuit Inspection" .

BOSE speaker amp. ON signal

BOSE speaker amp.
One or several speakers do not sound

Front door speaker check. Refer to AV- 3 4 , "Sound Is Not Heard From Front
Door Speaker or Front Tweeter" .

Rear door speaker check. Refer to AV- 3 8 , "Sound Is Not Heard From Rear
Door Speaker or Rear Door Tweeter" .

Subwoofer check. Refer to AV-42, "Sound Is Not Heard From Subwoofer" .

Center speaker check. Refer to AV- 4 1 , "Sound Is Not Heard From Center
Speaker" .
Poor sound

Audio unit

BOSE speaker amp.

Speaker
Noisy

Audio unit

BOSE speaker amp.

Electrical equipment (generator, bonding wire, etc.)
Symptom Possible cause
No sound

Audio unit

Antenna feeder, wiring or connections

Antenna amplifier, power supply, wiring or connections
Noisy

Audio unit

Audio unit case ground

Antenna feeder, wiring or connections

Antenna amplifier, power supply, wiring or connections

Noise prevention parts

Each electrical equipment

Wire harness of each piece of electrical equipment
All radio stations stored in memory are deleted

Audio unit power circuit check. Refer to AV- 3 0 , "Power Supply Cir-
cuit Inspection" .

Audio unit

AV-48
AUDIO ANTENNA
Revision: October 20052005 QX56
AUDIO ANTENNAPFP:28200
System DescriptionEKS00BJ1
With the ignition switch in ACC or ON, power is supplied

through 10A fuse [No. 4, located in the fuse block (J/B)]

to audio unit terminal 10.
Ground is supplied through the case of the antenna amp.
When the audio unit switch is turned ON, antenna signal is supplied

through audio unit terminal 5

to the antenna amp. terminal 1.
Then the antenna amp. is activated.
The amplified radio signals are supplied to the audio unit through the antenna amp.

AV-62
NAVIGATION SYSTEM
Revision: October 20052005 QX56

In map-matching, alternative routes to reach the destination will
be shown and prioritized, after the road on which the vehicle is
currently driven has been judged and the current-location mark
has been repositioned.
If there is an error in distance and/or direction, the alternative
routes will be shown in different order of priority, and the wrong
road can be avoided.
If two roads are running in parallel, they are of the same priority.
Therefore, the current-location mark may appear on either of
them alternately, depending on maneuvering of the steering
wheel and configuration of the road.

Map-matching does not function correctly when the road on
which the vehicle is driving is new and not recorded in the map
DVD-ROM, or when the road pattern stored in the map data and
the actual road pattern are different due to repair.
When driving on a road not present in the map, the map-match-
ing function may find another road and position the current-loca-
tion mark on it. Then, when the correct road is detected, the
current-location mark may leap to it.

Effective range for comparing the vehicle position and travel
direction calculated by the distance and direction with the road
data read from the map DVD-ROM is limited. Therefore, when
there is an excessive gap between the current vehicle position
and the position on the map, correction by map-matching is not possible.
GPS (GLOBAL POSITIONING SYSTEM)
GPS (Global Positioning System) has been developed and con-
trolled by the US Department of Defense. The system utilizes GPS
satellite (NAVSTAR), sending out radio waves while flying on an orbit
around the earth at the height of approx. 21,000 km (13,000 miles).
The GPS receiver calculates the vehicle's position in three dimen-
sions (latitude/longitude/altitude) according to the time lag of the
radio waves received from four or more GPS satellites (three-dimen-
sional positioning). If radio waves were received only from three
GPS satellites, the GPS receiver calculates the vehicle's position in
two dimensions (latitude/longitude), utilizing the altitude data calcu-
lated previously by using radio waves from four or more GPS satel-
lites (two-dimensional positioning).
Accuracy of the GPS will deteriorate under the following conditions.

In two-dimensional positioning, the GPS accuracy will deteriorate when the altitude of the vehicle position
changes.

There may be an error of approximately 10 m (30 ft) in position detected by three-dimensional positioning,
which is more accurate than two-dimensional positioning. The accuracy can be even lower depending on
the arrangement of the GPS satellites utilized for the positioning.

Position detection is not possible when the vehicle is in an area where radio waves from the GPS satellite
do not reach, such as in a tunnel, parking lot in a building, and under an elevated highway. Radio waves
from the GPS satellites may not be received when some object is located over the GPS antenna.

Position correction by GPS is not available while the vehicle is stopped.
SEL686V
SKIA0613E
SEL526V

NAVIGATION SYSTEM
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AV
Revision: October 20052005 QX56
If an error occurred before the ignition switch was turned to ON and does not occur again until the “Self-diag-
nosis” is completed, the diagnosis result will be judged normal. Therefore, those errors in the past which can-
not be found by the “Self-diagnosis” must be found by diagnosing the “History of Errors”.
The History of Errors displays the time and place of the most recent occurrence of that error. However, take
note of the following points.

Correct time of the error occurrence may not be displayed when the GPS antenna substrate within the
NAVI control unit has malfunctioned.

Place of the error occurrence is represented by the position of the current-location mark at the time when
the error occurred. If the current-location mark has deviated from the correct position, then the place of
the error occurrence may be located correctly.

The maximum number of occurrences which can be stored is 50. For the 51st and later occurrences, the
displayed number remains 50.
When a reproducible malfunction occurred but its cause cannot be identified because several errors are
present, record the item, number and place (longitude/latitude) of error occurrence (or delete the History of
Errors), then turn the ignition switch from OFF to ON to reproduce the malfunction. Check the History of Errors
to find the items which show an increased number of occurrences, and diagnose the item.
Error itemPossible causes
Example of symptom
Action/symptom
Gyro sensor
disconnectedCommunications malfunction between NAVI control unit and inter-
nal gyro.

Navigation location detection performance
has deteriorated.
(Angular velocity cannot be detected.)
Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS discon-
nectedCommunication error between NAVI control unit and internal GPS
substrate.

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS trans-
mission cable
malfunctionMalfunctioning transmission wires to NAVI control unit and internal
GPS substrate.

During self-diagnosis, GPS diagnosis is not
performed.
Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS input
line connec-
tion errorMalfunctioning receiving wires to NAVI control unit and internal
GPS substrate.

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS TCX0
over
GPS TCX0
underOscillating frequency of the GPS substrate frequency synchroniz-
ing oscillation circuit exceeded (or below) the specification

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference, or the control unit may have been subjected to exces-
sively high or low temperatures.
GPS ROM
malfunction
GPS RAM
malfunctionContents of ROM (or RAM) in GPS substrate are malfunctioning.

Location detection accuracy of the navigation
system will deteriorate, depending on the error
area in the memory, because GPS cannot
make correct positioning.
(Location correction using GPS is not per-
formed.)

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.