display INFINITI QX56 2009 Factory Manual PDF

AV
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUITAV-83
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
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VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
DescriptionINFOID:0000000003776869
In composite image (AUX image, camera image), transmi t the vertical synchronizing (VP) signal and horizon-
tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis-
played with AV control unit such as the image quality adjusting menu, etc.
Diagnosis ProcedureINFOID:0000000003776870
1.CHECK CONTINUITY VERTICAL SINCHRO NIZING (VP) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con- nector M43.
3. Check continuity between display unit harness connector M93
(A) terminal 20 and AV control unit harness connector M43 (B)
terminal 29.
4. Check continuity between display unit harness connector M93 (A) terminal 20 and ground.
Are continuity results as specified?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK VERTICAL SINCHRONIZING (VP) SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M43.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter- minal 20 and ground.
Are voltage readings as specified?
YES >> Replace AV control unit. Refer to AV-168, "Removal and Installation".
NO >> Replace display unit. Refer to AV-170, "
Removal and Installation".
AB Continuity
Connector Terminal Connector Terminal
M9320M4329 Yes
A —Contin u it y
Connector Terminal
M93 20Ground No
ALNIA0415GB
(+)
(-) Condition Reference signal
Connector Terminal
M93 20 Ground Receive
audio sig-
nal
ALNIA0393GB
SKIB3598E
Revision: December 20092009 QX56

AV
AV CONTROL UNITAV-109
< ECU DIAGNOSIS > [AUDIO SYSTEM]
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ECU DIAGNOSIS
AV CONTROL UNIT
Reference ValueINFOID:0000000003776891
VALUES ON THE DIAGNOSIS TOOL
CONSULT-III data monitor item
TERMINAL LAYOUT
PHYSICAL VALUES
Display Item Dis-
play Vehicle status
Remarks
VHCL SPD SIG ON Vehicle speed >0 km/h (0 MPH)
Changes in indication may be delayed. This is
normal.
OFF Vehicle speed =0 km/h (0 MPH)
PKB SIG ON Parking brake is applied.
Changes in indication may be delayed. This is
normal.
OFF Parking brake is released.
ILLUM SIG ON
Block the light beam from the auto
light optical sensor when the light
SW is ON.
—
OFF Expose the auto light optical sensor
to light when the light SW is OFF or
ON.
IGN SIG ON Ignition switch ON
—
OFF Ignition switch in ACC position
REV SIG ON Selector lever in R position
Changes in indication may be delayed. This is
normal.
OFF Selector lever in any position other
than R
ALNIA0670GB
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
1
(GR/L) Ground Amp. ON signal
OutputIgnition
switch ON —
Battery voltage
2
(LG) 3
(V) Pre-amp. audio signal front
LH
OutputIgnition
switch ON Audio output
SKIB3609E
Revision: December 20092009 QX56

AV
AV CONTROL UNITAV-111
< ECU DIAGNOSIS > [AUDIO SYSTEM]
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(W) 24 RGB signal (R: red) Output Ignition
switch ON Start confirmation/adjust-
ment mode, and then dis-
play color bar by selecting
“Color Spectrum Bar” on
DISPLAY DIAGNOSIS
screen.
22
(B) 24 RGB signal (G: green) Output Ignition
switch ON Start confirmation/adjust-
ment mode, and then dis-
play color bar by selecting
“Color Spectrum Bar” on
DISPLAY DIAGNOSIS
screen.
23
(R) 24 RGB signal (B: blue) Output Ignition
switch ON Start confirmation/adjust-
ment mode, and then dis-
play color bar by selecting
“Color Spectrum Bar” on
DISPLAY DIAGNOSIS
screen.
24 Ground RGB signal ground —Ignition
switch OFF —0
V
25
(W) 26 RGB synchronizing signal Output Ignition
switch ON —
26 Ground RGB synchronizing signal
ground
—Ignition
switch ON —0
V
27
(O) Ground RGB area (YS) signal Output Ignition
switch ON At RGB image displayed
5V
At rear view camera image
displayed
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB2238J
SKIB2236J
SKIB2237J
SKIB3603E
PKIB4948J
Revision: December 20092009 QX56

AV-112
< ECU DIAGNOSIS >[AUDIO SYSTEM]
AV CONTROL UNIT
28
(W/L) Ground Horizontal synchronizing
(HP) signal InputIgnition
switch ON —
29
(O/L) Ground Vertical synchronizing (VP)
signal
InputIgnition
switch On —
30
(V) Ground Communication signal
(CONT
→DISP) OutputIgnition
switch ON When adjusting display-
brightness
31
(LG) Ground
Communication signal
(DISP→CONT) InputIgnition
switch
ON When adjusting display-
brightness
32 — Shield — —— —
39
(W) 55
(B) DVD audio signal LH Input Ignition
switch ON When DVD player is oper-
ating
40
(R) 56
(G) DVD audio signal RH Input Ignition
switch
ON When DVD player is oper-
ating
45
(SB) Ground CD/DVD eject signal Input — Pressing the eject switch
0V
Except for above 3.3V
46 — Shield — —— —
Terminal
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3601E
SKIB3598E
PKIB5039J
PKIB5039J
SKIB3609E
SKIB3609E
Revision: December 20092009 QX56

AV
AV CONTROL UNITAV-143
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DTC IndexINFOID:0000000003776893
Self-diagnosis results display item
AANIA0015GB
Revision: December 20092009 QX56

AV
DISPLAY UNITAV-145
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DISPLAY UNIT
Reference ValueINFOID:0000000003776894
TERMINAL LAYOUT
PHYSICAL VALUES
ALNIA0666GB
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
1
(B) Ground Ground
—Ignition
switch ON —0
V
2
(Y) Ground Battery power supply Input Ignition
switch
OFF —1
2V
3
(V) Ground ACC power supply
InputIgnition
switch ACC —1
2V
4—Shield —— — —
5
(L) Ground DVD player image ground — Ignition
switch ON —0
V
6
(B) Ground RGB signal (G: green) Input Ignition
switch ON Start confirmation/adjust-
ment mode, and then dis-
play color bar by
selecting“Color Spectrum
Bar” on DISPLAY DIAGNO-
SIS screen.
7—Shield —— — —
8
(W/L) Ground
Horizontal synchronizing
(HP) signal OutputIgnition
switch
ON —
SKIB2236J
SKIB3601E
Revision: December 20092009 QX56

AV-146
< ECU DIAGNOSIS >[AUDIO SYSTEM]
DISPLAY UNIT
9
(O) Ground RGB area (YS) signal Input Ignition
switch ON RGB image displayed
5V
Rear view camera image
displayed
11
(V) Ground Communication signal
(CONT
→DISP) InputIgnition
switch ON When adjusting display-
brightness
12
(W) 14
(B) Rear view camera image
signal
InputIgnition
switch ON Rear view camera image
displayed
13
(B) Ground Inverter ground
—Ignition
switch ON —0
V
14
(B) Ground Signal ground
—Ignition
switch
ON —0
V
15
(B/W) Ground DVD player image signal Input Ignition
switch
ON When DVD mode is select-
ed
17
(W) Ground RGB signal (R: red)
InputIgnition
switch ON Start confirmation/adjust-
ment mode, and then dis-
play color bar by selecting
“Color Spectrum Bar” on
DISPLAY DIAGNOSIS
screen.
Terminal
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
PKIB4948J
PKIB5039J
SKIB2251J
SKIB2251J
SKIB2238J
Revision: December 20092009 QX56

AV
DISPLAY UNITAV-147
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(R) Ground RGB signal (B: blue) Input Ignition
switch ON Start confirmation/adjust-
ment mode, and then dis-
play color bar by
selecting“Color Spectrum
Bar” on DISPLAY DIAGNO-
SIS screen.
19
(W) Ground RGB synchronizing signal Input Ignition
switch ON —
20
(O/L) Ground Vertical synchronizing (VP)
signal OutputIgnition
switch On —
21 Ground RGB synchronizing ground — — —0V
22
(LG) Ground
Communication signal
(DISP
→CONT) OutputIgnition
switch
ON When adjusting display-
brightness
23 — Shield — —— —
24 — Shield — —— —
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB2237J
SKIB3603E
SKIB3598E
PKIB5039J
Revision: December 20092009 QX56

AV
DVD PLAYERAV-153
< ECU DIAGNOSIS > [AUDIO SYSTEM]
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DVD PLAYER
Reference ValueINFOID:0000000003776897
PHYSICAL VALUES
ALNIA0665GB
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
1
(W) 2
(B) DVD audio signal LH Output Ignition
switch ON With operation of the DVD
player
3—Shield —— — —
5
(B) Ground Ground
—Ignition
switch
ON —0
V
6
(BR) Ground Illumination control (pulse
width modulated)
— — With lighting switch ON
—
7
(W/L) Ground Can communication Input/
Output Ignition
switch ON ——
9
(SB) Ground Video monitor power sup-
ply OutputIgnition
switch ON With DVD player operation
Battery voltage
10
(G/Y) Ground Switch power
OutputIgnition
switch
ON With DVD player operation
5V
12
(B/W) Ground VTR (+)
OutputIgnition
switch ON With DVD player operation
—
13
(L) Ground VTR (-)
OutputIgnition
switch ON With DVD player operation
—
14
(B/W) Ground Display ground
—Ignition
switch
ON With DVD player operation
0V
16
(Y) — Data receive
Input —— —
SKIB3609E
Revision: December 20092009 QX56

AV-156
< SYMPTOM DIAGNOSIS >[AUDIO SYSTEM]
MULTI AV SYSTEM
DVD PLAYER
Symptom
Possible causeReference page
DVD player inoperative • Power supply and ground circuits
• DVD player •
AV- 7 4
•AV- 1 5 3
No sound when playing a DVD • Audio signal circuits
• AV control unit
• DVD player •
AV- 8 4•AV- 6 8
•AV- 7 4
Video monitor is inoperative/does not display properly • Power supply and ground circuits
• Video out circuit
• DVD player
• Display monitor •
AV- 7 5•AV- 1 5 3
•AV- 7 4
•AV- 7 5
DVD remote control is inoperative/does not operate
properly • DVD player
• Rear audio remote control unit •
AV- 7 4
•AV- 1 0 9
Headphones inoperative • Headphone batteries
• Headphone audio signal circuits from AV control unit
• AV control unit
• Rear audio remote control unit •
AV- 1 5 3•AV- 1 0 9
•AV- 1 0 9
Revision: December 20092009 QX56