Page 297 of 4171
![INFINITI QX56 2009 Factory Service Manual AV
AV CONTROL UNITAV-111
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P21
(W) 24 RGB signal (R: red) Output Ignition
switch ON Start confirmation/adjust-
ment mode, and then dis-
pla INFINITI QX56 2009 Factory Service Manual AV
AV CONTROL UNITAV-111
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P21
(W) 24 RGB signal (R: red) Output Ignition
switch ON Start confirmation/adjust-
ment mode, and then dis-
pla](/manual-img/42/57031/w960_57031-296.png)
AV
AV CONTROL UNITAV-111
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P21
(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
Page 298 of 4171
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
Page 329 of 4171
AV
AV CONTROL UNITAV-143
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
DTC IndexINFOID:0000000003776893
Self-diagnosis results display item
AANIA0015GB
Revision: December 20092009 QX56
Page 331 of 4171
AV
DISPLAY UNITAV-145
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
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
Page 332 of 4171
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
Page 333 of 4171
AV
DISPLAY UNITAV-147
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P18
(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
Page 339 of 4171
![INFINITI QX56 2009 Factory Service Manual AV
DVD PLAYERAV-153
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
DVD PLAYER
Reference ValueINFOID:0000000003776897
PHYSICAL VALUES
ALNIA0665GB
Te r m i n a l
(Wire color) Description INFINITI QX56 2009 Factory Service Manual AV
DVD PLAYERAV-153
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
DVD PLAYER
Reference ValueINFOID:0000000003776897
PHYSICAL VALUES
ALNIA0665GB
Te r m i n a l
(Wire color) Description](/manual-img/42/57031/w960_57031-338.png)
AV
DVD PLAYERAV-153
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
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
Page 342 of 4171
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