audio INFINITI QX56 2007 Factory Repair Manual

DVD ENTERTAINMENT SYSTEM
AV-65
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• to video monitor terminals 11 and 12.
Ground is supplied
• to DVD player terminal 22
• through body grounds M57, M61 and M79.
Audio signals are supplied
• through DVD player terminals 1, 2, 3 and 4
• to audio unit terminals 34, 35, 36 and 37.
Video signals are supplied
• through DVD player terminals 23, 24, 28 and 29
• to video monitor terminals 5, 6, 7 and 8.

AV-70
< SERVICE INFORMATION >
DVD ENTERTAINMENT SYSTEM
Trouble Diagnosis
INFOID:0000000003533703
Power Supply Circuit InspectionINFOID:0000000003533704
1.CHECK FUSES
Check that the following fuses are not blown.
Symptom Possible causes Repair order
DVD player inoperative1. Power supply
2. Ground circuit
3. Audio enable circuit
4. DVD enable signal
5. Audio enable signal
6. DVD player
7. Audio unit1. Refer to AV- 7 0 , "
Power Supply Circuit Inspection".
2. Refer to AV- 7 0 , "
Power Supply Circuit Inspection".
3. Check audio enable circuits for open or short be-
tween audio unit terminals 39, 40 and DVD player
terminals 11, 9.
4. Push power switch of DVD player and verify approx.
5V is present at terminal 39 of audio unit.
5. Push power switch of DVD player and verify approx.
5V is present at terminal 9 of DVD player.
6. Remove DVD player for repair.
7. Remove audio unit for repair.
No sound when playing
DVD1. Audio signal circuits
2. DVD player
3. Audio unit1. Check audio signal circuits for open or short be-
tween DVD player terminals 1, 2, 3 and 4 and audio
unit terminals 34, 35, 36 and 37.
2. Remove DVD player for repair.
3. Remove audio unit for repair.
Video monitor is inopera-
tive/does not operate prop-
erly1. Power supply
2. Video monitor ground circuit
3. Video circuits
4. Data signal
5. Video monitor
6. DVD player1. Operate DVD player and verify battery positive volt-
age is present at terminals 11 and 12 of video moni-
tor. Verify approximately 5 volts is present at terminal
10 of video monitor.
2. Check video monitor ground circuits between DVD
player terminals 19 and 27 and video monitor termi-
nals 1 and 2.
3. Check video circuits between DVD player terminals
23 and 24 and video monitor terminals 7 and 8.
4. Check data signal circuit for open or short between
DVD player terminal 29 and video monitor terminal
5.
5. Remove video monitor for repair.
6. Remove DVD player for repair.
DVD remote control is inop-
erative/does not operate
properly1. Data signal
2. DVD player remote control batteries
3. DVD player remote control
4. Video monitor1. Check data signal circuit for open or short between
DVD player terminal 28 and video monitor terminal
6.
2. Replace DVD player remote control batteries.
3. Replace DVD player remote control.
4. Remove video monitor for repair.
Headphones inoperative 1. Headphone batteries
2. Headphones
3. Rear audio remote control unit1. Replace headphone batteries.
2. Replace headphones.
3. Replace rear audio remote control unit.
Snowy video/poor audio 1. Harness or connectors
2. DVD player1. Check harness and connectors for open or short.
2. Check DVD player.
Snowy video (audio OK) 1. Harness or connectors
2. DVD player1. Check harness and connectors for open or short.
2. Check DVD player.
No video (audio OK) 1. Harness or connectors
2. DVD player
3. Video monitor1. Check harness and connectors for open or short.
2. Check DVD player.
3. Check video monitor.
Dim video (audio OK) 1. Harness or connectors
2. DVD player
3. Video monitor1. Check harness and connectors for open or short.
2. Check DVD player.
3. Check video monitor.

NAVIGATION SYSTEM
AV-75
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• Position correction by GPS is not available while the vehicle is stopped.
COMPONENT DESCRIPTION
NAVI Control Unit
• The gyro (angular speed sensor) and the DVD-ROM drive are
built-in units that control the navigation functions.
• Signals are received from the gyro, the vehicle speed sensor, and
the GPS antenna. Vehicle location is determined by combining this
data with the data contained in the DVD-ROM map. Location infor-
mation is shown on liquid crystal display (display unit).
• Maps, traffic control regulations, and other pertinent information
can be easily read from the DVD-ROM disc.
• The oscillator gyro sensor is used to detect changes in vehicle
steering angle.
Map DVD-ROM
• The map DVD-ROM has maps, traffic control regulations, and other pertinent information.
• To improve DVD-ROM map matching and route determination functions, the DVD-ROM uses an exclusive
Nissan format. Therefore, the use of a DVD-ROM provided by other manufacturers cannot be used.
Display Control Unit
The display control unit coordinates audio and video signals between the NAVI control unit and the display
unit.
Display Unit
Displays NAVI system information.
AV Switch
AV switch allows user to input NAVI display settings. Self diagnostics are initiated using AV switch.
GPS Antenna
GPS antenna sends signals to NAVI control unit.
CAN Communication System DescriptionINFOID:0000000003533707
Refer to LAN-4.
WKIA4593E

AV-76
< SERVICE INFORMATION >
NAVIGATION SYSTEM
Component Parts Location
INFOID:0000000003533708
WKIA4571E
1. Fuse block (J/B) 2. Fuse and fusible link box 3. Combination switch
M28
4. Combination meter
M245. GPS antenna 6. Display unit
M93
7. Display control unit
M94, M958. AV switch
M989. Audio unit
M45
10. Data link connector
M2211 . B C M
M18, M2012. Steering wheel audio control switches
13. NAVI control unit
B151, B152, B15414. IPDM E/R
E121, E124

NAVIGATION SYSTEM
AV-89
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Terminal and Reference Value for NAVI Control UnitINFOID:0000000003533713
Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Vo l ta g e
(Approx.)Example of
symptom
+–Igni-
tion
switchOperation
1 (B) Ground Ground – ON – 0V –
2 (Y) Ground Battery power Input OFF – Battery voltageSystem does not
work properly.
5 (O) Ground ACC signal Input ACC – Battery voltageSystem does not
work properly.
12 (B) 14 (W)Voice guide
signalOutput ONPress the “GUIDE/
VOICE” button.Only route guide
and operation
guide are not
heard.
13 – Shield ground – – – –Audio noise in-
terference.
44 (R) 47RGB signal
(R: red)Output ONSelect “Display Di-
agnosis (NAVI)” of
CONFIRMATION/
ADJUSTMENT
function.NAVI screen
looks bluish.
45 (R/W) 47RGB signal
(G: green)Output ONSelect “Display Di-
agnosis (NAVI)” of
CONFIRMATION/
ADJUSTMENT
function.NAVI screen
looks reddish.
46 (B) 47RGB signal
(B: blue)Output ONSelect “Display Di-
agnosis (NAVI)” of
CONFIRMATION/
ADJUSTMENT
function.NAVI screen
looks yellowish.
47 – Shield ground – – – –Video display in-
terference.
48 (BR) 49RGB syn-
chronizing
signalOutput ONPress the “MAP”
button.NAVI screen is
rolling.
SKIA0171J
SKIA4977E
SKIA4978E
SKIA4979E
SKIA0164E

AV-92
< SERVICE INFORMATION >
NAVIGATION SYSTEM
30 (LG) GroundCommunica-
tion signal (–)Input/
outputON –System does not
work properly.
32 (L) GroundCommunica-
tion signal (+)Input/
outputON –System does not
work properly.
33 – Shield ground – – – – –
34 (P) GroundCommunica-
tion signal (–)Input/
outputON –System does not
work properly.
36 (B/W) 37Display Com-
munication
signal
(DCU-DSP)Output ONPress the “TRIP”
button.Though a screen
is displayed, it is
impossible to ad-
just brightness.
37 – Shield ground – – – – –
38 (L) 37Display Com-
munication
signal
(DSP-DCU)Input ONPress the “TRIP”
button.Though a screen
is displayed, it is
impossible to ad-
just brightness.
39 – Shield ground – – – – –
40 (O/L) GroundAudio TX
Communica-
tion signalOutput ONOperate audio
volume.Audio does not
operate properly.
41 – Shield ground – – – – –Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Voltag e
(Approx.)Example of
symptom
+–Igni-
tion
switchOperation
SKIA0176E
SKIA0175E
SKIA0176E
SKIA4364E
SKIA4363E
SKIA4402E

NAVIGATION SYSTEM
AV-93
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42 (W/L) GroundAudio RX
communica-
tion signalInput ONOperate audio
volume.Audio does not
operate properly.
43 (W) 41RGB syn-
chronizing
signalInput ONPress the “MAP”
button.NAVI screen is
rolling.
44 (R/L) 45RGB signal
(R: red)Input ONSelect “Display Di-
agnosis (NAVI)” of
CONFIRMATION/
ADJUSTMENT
function.NAVI screen
looks bluish.
45 – Shield ground – – – – –
46 (R/W) 45RGB signal
(G: green)Input ONSelect “Display Di-
agnosis (NAVI)” of
CONFIRMATION/
ADJUSTMENT
function.NAVI screen
looks reddish.
47 – Shield ground – – – – –
48 (B) 45RGB signal
(B: blue)Input ONSelect “Display Di-
agnosis (NAVI)” of
CONFIRMATION/
ADJUSTMENT
function.NAVI screen
looks yellowish.
49 – Shield ground – – – – –
50 (R/L) 47RGB signal
(R: red)Output ONSelect “Display Di-
agnosis (DCU)” of
CONFIRMATION/
ADJUSTMENT
function.NAVI screen
looks bluish. Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Vo l ta g e
(Approx.)Example of
symptom
+–Igni-
tion
switchOperation
SKIA4403E
SKIA0164E
SKIA4977E
SKIA4978E
SKIA4979E
SKIA4980E

AV-94
< SERVICE INFORMATION >
NAVIGATION SYSTEM
51 (B) 49RGB area
(YS) signalOutput ONPress the“TRIP”
button.RGB screen is
not shown.
52 (R/W) 47RGB signal
(G: green)Output ONSelect “Display Di-
agnosis (DCU)” of
CONFIRMATION/
ADJUSTMENT
function.Screen looks
reddish.
53 (W) 49Vertical syn-
chronizing
(VP) signalInput ON –Operating
screen for audio
and A/C is not
displayed when
showing NAVI
screen.
54 (B) 47RGB signal
(B: blue)Output ONSelect “Display Di-
agnosis (DCU)” of
CONFIRMATION/
ADJUSTMENT
function.Screen looks
yellowish.
55 (R) 49Horizontal
synchroniz-
ing (HP) sig-
nalInput ON –Operating
screen for audio
and A/C is not
displayed when
showing NAVI
screen.
56 (G) 49RGB syn-
chronizing
signalOutput ONPress the “TRIP”
button.NAVI screen is
rolling. Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Voltag e
(Approx.)Example of
symptom
+–Igni-
tion
switchOperation
SKIA0162E
SKIA4981E
SKIA4983E
SKIA4982E
SKIA4983E
SKIA0164E

NAVIGATION SYSTEM
AV-95
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Terminal and Reference Value for Display unitINFOID:0000000003533715
Terminal No. (Wire
color)
ItemSignal
input/
outputCondition
Vo l ta g e
(Approx.)Example of
symptom
+–Igni-
tion
switchOperation
1 (B) Ground Ground – ON – 0 V –
2 (L/W) GroundPower sup-
ply (Inverter) Input ON – 9 VScreen is not
shown.
3 (L/R) GroundPower sup-
ply (Signal) Input ON – 9 VScreen is not
shown.
6 (R/W) 7RGB signal
(G: green)Input ONSelect “Display Di-
agnosis (DCU)” of
CONFIRMATION/
ADJUSTMENT
function.Screen looks
reddish.
7 – Shield ground – – – – –
8 (R) 21Horizontal
synchroniz-
ing (HP) sig-
nalOutput ON –Operating
screen for audio
and A/C is not
displayed when
showing NAVI
screen.
9 (B) 21RGB area
(YS) signalInput ONPress the “TRIP”
button.RGB screen is
not shown.
11 (B/W) 23Display com-
munication
signal
(DCU-DSP)Input ON –Though a screen
is displayed, it is
impossible to ad-
just brightness.
13 (P) Ground(Inverter)
Ground –ON – 0 V –
14 (P/L) Ground(Signal)
Ground –ON – 0 V –
17 (R/L) 7RGB signal
(R: red)Input ONSelect “Display Di-
agnosis (DCU)” of
CONFIRMATION/
ADJUSTMENT
function.Screen looks
bluish.
SKIA4981E
SKIA4983E
SKIA0162E
SKIA4364E
SKIA4980E

AV-96
< SERVICE INFORMATION >
NAVIGATION SYSTEM
Terminal and Reference Value for AV Switch
INFOID:0000000003533716
18 (B) 7RGB signal
(B: blue)Input ONSelect “Display Di-
agnosis (DCU)” of
CONFIRMATION/
ADJUSTMENT
function.Screen looks
yellowish.
19 (G) 21RGB syn-
chronizing
signalInput ONPress the “TRIP”
button.NAVI screen is
rolling.
20 (W) 21Vertical syn-
chronizing
(VP) signalOutput ON –Operating
screen for audio
and A/C is not
displayed when
showing NAVI
screen.
21 – Shield ground – – – – –
22 (L) 23Display com-
munication
signal
(DSP-DCU)Output ON –Though a screen
is displayed, it is
impossible to ad-
just brightness.
23 – Shield ground – – – – – Terminal No. (Wire
color)
ItemSignal
input/
outputCondition
Voltag e
(Approx.)Example of
symptom
+–Igni-
tion
switchOperation
SKIA4982E
SKIA0164E
SKIA4983E
SKIA4363E
Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Vo l ta g e
(Approx.)Example of
symptom
+–Ignition
switchOperation
1 (Y) Ground Battery power Input OFF - Battery voltageSystem does not
work properly.
2 (V) Ground ACC signal Input ACC - Battery voltageSystem does not
work properly.
3 (R/L) GroundIllumination
signalInput OFFLighting switch is
ON (position 1).Battery voltageAV switch illumi-
nation does not
come on when
lighting switch is
ON (position 1). Turn lighting switch
OFF.3.0V or less