2010 INFINITI QX56 CD player

AV
POWER SUPPLY AND GROUND CIRCUITAV-75
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
1. Disconnect DVD player connector M205.
2. Check voltage between the DVD player connector M205 and ground.
Are the voltage results as specified?
YES >> GO TO 3.
NO >> • Check connector housings for disconnected or loose terminals. • Repair harness or connector.
3.GROUND CIRCUIT CHECK
1. Ignition OFF.
2. Check continuity between DVD player harness connector M205 terminal 5 and ground.
Are the continuity results as specified?
YES >> Inspection End.
NO >> Repair DVD player ground.
VIDEO MONITOR
VIDEO MONITOR : Diagnosis ProcedureINFOID:0000000005146309
Regarding Wiring Diagram information, refer to AV-116, "Wiring Diagram".
1.CHECK POWER SUPPLY CIRCUIT
Check voltage between video monitor harness connector R202 and
ground.
Does specified voltage exist?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT
(+) (-) OFF ACC ON
Connector Terminal
M205 21
Ground Batter volt-
age Battery
voltage Battery volt-
age
24 0VBattery
voltage Battery volt-
age
ALNIA0325GB
(+) (-)Continuity
Connector Terminal
M205 5Ground Yes
ALNIA0326GB
Signal name Connector Terminal Ignition switch
position Value (Approx.)
Display B+ R202 11
ACC 12V
12
ALNIA0328GB
Revision: April 20092010 QX56

AV-76
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the video monitor connector R202 and the DVD
player connector M205.
3. Check continuity between the video monitor harness connector R202 (A) and the DVD player connector M205 (B).
4. Check continuity between video monitor harness connector R202 (A) and ground.
Are continuity test results as specified?
YES >> Check DVD player power and ground supply. Refer to AV-68, "AV CONTROL UNIT : Diagnosis
Procedure".
NO >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect video monitor connector.
3. Check continuity between video monitor harness connector
R202 and ground.
Does continuity exist?
YES >> Inspection end.
NO >> Repair harness or connector.
MICROPHONE
MICROPHONE : Diagnosis ProcedureINFOID:0000000005146310
Regarding Wiring Diagram information, refer to AV-116, "Wiring Diagram".
1.CHECK POWER SUPPLY CIRCUIT
Check voltage between microphone harness connector R109 termi-
nal 4 and ground.
Is approximately 5V present?
YES >> GO TO 3.
NO >> GO TO 2.
AB Continuity
Connector Terminal Connector Terminal
R202 11
M205 9
Ye s
12 25
A -Contin u it y
Connector Terminal
R202 11
Ground No
12
AWLIA1600ZZ
Connector Terminal Ignition switch position Continuity
R202 1
OFF Yes
2
ALNIA0329GB
Signal name Connector Terminal Ignition switch
position Value (Approx.)
MIC power R109 4ON 5V
WKIA5796E
Revision: April 20092010 QX56

AV
AV CONTROL UNITAV-113
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P28
(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 — —— —
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3601E
SKIB3598E
PKIB5039J
PKIB5039J
SKIB3609E
SKIB3609E
Revision: April 20092010 QX56

AV-114
< ECU DIAGNOSIS >[AUDIO SYSTEM]
AV CONTROL UNIT
47
(W) 48
(R) AUX jack audio signal LH Input Ignition
switch ON When AUX mode
is select-
ed
58
(O/L) 42
(W) Headphone LH audio sig-
nal
OutputIgnition
switch ON When DVD player is oper-
ating
59
(W/L) 43
(O) Headphone RH audio sig-
nal
OutputIgnition
switch ON When DVD player is oper-
ating
60 — Shield — —— —
62
(B) Ground A/C and AV switch assem-
bly ground —Ignition
switch ON —0
V
63
(B) 48
(R) AUX jack audio signal RH Input Ignition
switch ON When AUX mode
is select-
ed
65
(B) Ground Ground
—Ignition
switch ON —0
V
66
(Y) Ground Battery power supply Input Ignition
switch OFF —
Battery voltage
67
(B) Ground Ground
—Ignition
switch
ON —0
V
68
(Y) Ground Battery power supply Input Ignition
switch OFF —
Battery voltage
69
(V) Ground ACC power supply
InputIgnition
switch
ACC —
Battery voltage
70
(W) Ground MIC power
OutputIgnition
switch ON —5
V
Terminal
(Wire color) Description
ConditionR
e

ference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E
Revision: April 20092010 QX56

AV-146
< ECU DIAGNOSIS >[AUDIO SYSTEM]
DISPLAY UNIT
DISPLAY UNIT
Reference ValueINFOID:0000000005146348
TERMINAL LAYOUT
PHYSICAL VALUES
AWNIA1874ZZ
Terminal
(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: April 20092010 QX56

AV
DISPLAY UNITAV-147
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P9
(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.
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
PKIB4948J
PKIB5039J
SKIB2251J
SKIB2251J
SKIB2238J
Revision: April 20092010 QX56

AV-154
< ECU DIAGNOSIS >[AUDIO SYSTEM]
DVD PLAYER
DVD PLAYER
Reference ValueINFOID:0000000005146351
PHYSICAL VALUES
AWNIA1876ZZ
Terminal
(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: April 20092010 QX56

AV
DVD PLAYERAV-155
< ECU DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P17
(R) 18
(G) DVD audio signal RH Output Ignition
switch ON With DVD player operation
21
(Y) Ground Battery power
Input ——Battery voltage
22
(R/L) Ground Illumination power
Input —With instrument illumination
ON Battery voltage
23
(P/B) Ground CAN communication
Input/
Output Ignition
switch
ON —0
V
24
(V) Ground ACC power
InputIgnition
switch
ACC or
ON —
Battery voltage
25
(BR) Ground Video monitor power Output Ignition
switch ON With DVD player operation
Battery voltage
26
(B/Y) Ground Video monitor ground Input Ignition
switch ON With instrument illumination
ON 0V
28
(B/W) Ground Video out
InputIgnition
switch
ACC or
ON —
30 — Shield — — ——
32
(BR) — Data transmit
Output ———
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3609E
SKIB2251J
Revision: April 20092010 QX56