USB INFINITI QX56 2011 Factory User Guide

AV
AV CONTROL UNITAV-53
< ECU DIAGNOSIS INFORMATION >
C
DE
F
G H
I
J
K L
M B A
O P16
(Y/L) 15
(B) Steering switch signal B Input Ignition
switch
ON Keep pressing VOL DOWN
switch.
0 V
Keep pressing VOL UP
switch. 1.0 V
Keep pressing switch. 2.0 V
Keep pressing switch. 3.0 V
Except for above. 5.0 V
19
(Y/R) Ground Battery power supply Input Ignition
switch
OFF — Battery voltage
20
(B) Ground Ground — Ignition
switch ON —0 V
26
(LG) Ground AUX image signal Input Ignition
switch ON At front AUX image is dis-
played.
29
(W/B) Ground Disk eject signal Input Ignition
switch
ON Pressing the eject switch. 0 V
Except for above. 5.0 V
30
(R/W) Ground Mode change signal Output Ignition
switch ON Driver's Audio Stage ON 0 V
Driver's Audio Stage OFF 8.5 V
33
(L) Ground
Composite image signal
ground —Ignition
switch ON —0 V
34
(P) Ground Composite image signal Output Ignition
switch ON When DVD, USB or front
AUX image is displayed on
headrest display unit LH or
RH.
46
(V) Ground AUX image signal ground — Ignition
switch ON —0 V
47 — Shield — — — —
49
(R/W) Ground Switch ground — Ignition
switch
ON —0 V
53 — Shield — — — —
65
(W) Ground Parking brake signal Input Ignition
switch ON Parking brake is applied. 0 V
Parking brake is released. 4.5 V
67
(W) Ground Composite image signal
ground —Ignition
switch ON —0 V
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
SKIB2251J
SKIB2251J
Revision: 2010 May2011 QX56

AV-56
< ECU DIAGNOSIS INFORMATION >
AV CONTROL UNIT
106(W) 120
(R) Sound signal LH Output Ignition
switch ON When DVD or USB mode is
selected on headrest dis-
play unit LH or RH.
107 (B) 121
(G) Sound signal RH Output Ignition
switch ON When DVD or USB mode is
selected on headrest dis-
play unit LH or RH.
11 7 — S h i e l d — — — —
11 8 (O) 11 9
(W/L) AUX sound signal RH Input Ignition
switch ON When front AUX mode is
selected.
122 — Shield — — — —
129 (G) — USB ground — — — —
130 (R) — USB D
− signal — — — —
131 (W) — V BUS signal — — — —
132 (L) — USB D+ signal — — — —
133 — Shield — — — —
150 — FM sub Input — — —
151 — AM-FM main Input — — —
152 Ground Antenna amp. ON signal Input Ignition
switch ON —12.0 V
153 Ground GPS antenna signal Input Ignition
switch ON Not connected GPS anten-
na connector.
5.0 V
154 — Shield — — — —
157 Ground RGB digital image signal
(
− ) OutputIgnition
switch
ON Not connected connector. 1.3 V
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
SKIB3609E
SKIB3609E
SKIB3609E
Revision: 2010 May2011 QX56

AV-58
< ECU DIAGNOSIS INFORMATION >
AV CONTROL UNIT
DTC Display item Refer to
U1000 CAN COMM CIRCUIT [U1000] AV- 11 8 , "
DiagnosisProcedure"
U1010 CONTROL UNIT (CAN) [1010] AV- 11 9 , "DTC Logic"
U1200 Cont Unit [U1200]AV- 1 2 0 , "DTC Logic"
U1201 GYRO NO CONN [U1201]AV- 1 2 1 , "DTC Logic"
U1202 G-SENSOR NO CONN [U1202]AV- 1 2 2 , "DTC Logic"
U1204 GPS COMM [U1204]AV- 1 2 3 , "Diagnosis Procedure"
U1205 GPS ROM [U1205]AV- 1 2 4 , "Diagnosis Procedure"
U1206 GPS RAM [U1206]AV- 1 2 5 , "Diagnosis Procedure"
U1207 GPS RTC [U1207]AV- 1 2 6 , "Diagnosis Procedure"
U1216 CAN CONT [U1216] AV- 1 2 7 , "DTC Logic"
U1217 BLUETOOTH MODULE [U1217]AV- 1 2 8 , "DTC Logic"
U1218 HDD CONN [U1218]AV- 1 2 9 , "Diagnosis Procedure"
U1219 HDD READ [U1219]AV- 1 3 0 , "Diagnosis Procedure"
U121A HDD WRITE [U121A] AV- 1 3 1 , "Diagnosis Procedure"
U121B HDD COMM [U121B]AV- 1 3 2 , "Diagnosis Procedure"
U121C HDD ACCESS [U121C] AV- 1 3 3 , "Diagnosis Procedure"
U121D DSP CONN [U121D]AV- 1 3 4 , "Diagnosis Procedure"
U121E DSP COMM [U121E]AV- 1 3 5 , "Diagnosis Procedure"
U1225 USB CONTROLLER [U1225] AV- 1 3 6 , "DTC Logic"
U1227 DVD COMM [U1227]AV- 1 3 7 , "Diagnosis Procedure"
U1228 SUB CPU CONN [U1228] AV- 1 3 8 , "DTC Logic"
U1229 iPod CERTIFICATION [U1229]AV- 1 3 9 , "DTC Logic"
U122A CONFIG UNFINISH [U122A]AV- 1 4 0 , "Diagnosis Procedure"
U122E Built-in AUDIO CONN [U122E] AV- 1 4 1 , "DTC Logic"
U1232 ST ANGLE SEN CALIB [1232]AV- 1 4 2 , "Diagnosis Procedure"
U1243 FRONT DISP CONN [U1243]AV- 1 4 3 , "Diagnosis Procedure"
U1244 GPS ANTENNA CONN [U1244]AV- 1 4 5 , "Diagnosis Procedure"
U1258 XM ANTENNA CONN [U1258]AV- 1 4 6 , "Diagnosis Procedure"
U125A 3RD DISP CONN [U125A] AV- 1 4 7 , "Diagnosis Procedure"
U1263 USB OVERCURRENT [U1263]AV- 1 4 8 , "Diagnosis Procedure"
U1264ANTENNA AMP TERMINAL [OPEN or
SHORT] [U1264] AV- 1 4 9 , "Diagnosis Procedure"
U1265
AMP ON TERMINAL [GND-SHORT or VB-
SHORT] [U1265] AV- 1 5 0 , "Diagnosis Procedure"
U1310 CONTROL UNIT (AV) [U1310]
AV- 1 5 2 , "DTC Logic"
Revision: 2010 May2011 QX56

AV
HEADREST DISPLAY UNITAV-63
< ECU DIAGNOSIS INFORMATION >
C
DE
F
G H
I
J
K L
M B A
O P
19
(L/Y) Ground Cont. ground — Ignition
switch ON —0 V
20
(W/L) Ground Image switch signal Output Ignition
switch ON When DVD, USB or front
AUX image is displayed on
headrest display unit.
0.5 V
When rear AUX image is
displayed on headrest dis-
play unit. 4.5 V
23
(R/L) Ground Composite image signal
ground
—Ignition
switch ON —0 V
24
(Y) Ground Composite image signal Input Ignition
switch ON When DVD, USB or front
AUX image is displayed on
headrest display unit.
25 — Shield — — — —
27
(R/W) Ground AV ground — Ignition
switch
ON —0 V
28 — Shield — — — —
30
(P) 29
(BR) Headphone sound signal
RH
InputIgnition
switch
ON Headphone sound output.
32
(SB) 31
(LG) Headphone sound signal
LH
InputIgnition
switch ON Headphone sound output.
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
SKIB2251J
SKIB3609E
SKIB3609E
Revision: 2010 May2011 QX56

AV-64
< ECU DIAGNOSIS INFORMATION >
VIDEO DISTRIBUTOR
VIDEO DISTRIBUTOR
Reference ValueINFOID:0000000006216230
TERMINAL LAYOUT
PHYSICAL VALUES
JSNIA3024ZZ
Terminal
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
1
(B) —Ground — Ignition
switch
ON —0 V
2
(Y/R) Ground Battery power supply Input Ignition
switch OFF — Battery voltage
3
(B) —Ground — Ignition
switch
ON —0 V
4
(V) Ground ACC power supply Input Ignition
switch ACC — Battery voltage
5
(V/W) Ground Cont. ground for headrest
display unit RH —Ignition
switch ON —0 V
6
(L/W) Ground ACC signal for headrest
display unit RH OutputIgnition
switch
OFF — 3.3 V
Ignition switch ACC —0 V
7
(W/R) Ground Cont. ground for headrest
display unit LH —Ignition
switch ON —0 V
8
(GR/R) GroundACC signal for headrest
display unit LH OutputIgnition
switch
OFF — 3.3 V
Ignition switch ACC —0 V
9
(O/B) Ground Image switch signal for
headrest display unit RH
InputIgnition
switch ON When DVD, USB or front
AUX image is displayed on
headrest display unit RH.
0.5 V
When rear AUX image is
displayed on headrest dis-
play unit RH. 4.5 V
Revision: 2010 May2011 QX56

AV
VIDEO DISTRIBUTORAV-65
< ECU DIAGNOSIS INFORMATION >
C
DE
F
G H
I
J
K L
M B A
O P
10
(R/B) Ground
Image switch signal for
headrest display unit LH InputIgnition
switch
ON When DVD, USB or front
AUX image is displayed on
headrest display unit LH.
0.5 V
When rear AUX image is
displayed on headrest dis-
play unit LH. 4.5 V
14
(B) 15
(G) Headphone sound signal
RH for headrest display unit
RH
OutputIgnition
switch ON Output headphone sound
from headrest display unit
RH to headphone.
16
(W) 17
(R) Headphone sound signal
LH for headrest display unit
RH
Output
Ignition
switch
ON Output headphone sound
from headrest display unit
RH to headphone.
18
(P/L) Ground
AV ground for headrest dis-
play unit RH —Ignition
switch
ON —0 V
19
(P) Ground AV ground for headrest dis-
play unit LH
—Ignition
switch ON —0 V
20
(B) 21
(G) Headphone sound signal
RH for headrest display unit
LH
Output
Ignition
switch
ON Output headphone sound
from headrest display unit
LH to headphone.
22
(W) 23
(R) Headphone sound signal
LH for headrest display unit
LH
OutputIgnition
switch ON Output headphone sound
from headrest display unit
LH to headphone.
27
(W) Ground Composite image signal
ground for headrest display
unit RH
—Ignition
switch ON —0 V
28
(R)
Ground Composite image signal for
headrest display unit RH
OutputIgnition
switch ON When DVD, USB, front
AUX or rear AUX image is
displayed on headrest dis-
play unit RH.
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E
SKIB2251J
Revision: 2010 May2011 QX56

AV-66
< ECU DIAGNOSIS INFORMATION >
VIDEO DISTRIBUTOR
29 — Shield — — — —
30 — Shield — — — —
31
(Y/L) Ground Composite image signal
ground for headrest display
unit LH
—Ignition
switch ON —0 V
32
(Y/G) Ground Composite image signal for
headrest display unit LH
OutputIgnition
switch ON When DVD, USB, front
AUX or rear AUX image is
displayed on headrest dis-
play unit LH.
33
(L) Ground
Composite image signal
ground —Ignition
switch
ON —0 V
34
(P) Ground Composite image signal Input Ignition
switch
ON When DVD, USB or front
AUX image is displayed on
headrest display unit LH or
RH.
35 — Shield — — — —
40
(LG) 39
(V) AUX image signal Input Ignition
switch ON When rear AUX image is
displayed on headrest dis-
play unit LH or RH.
41 — Shield — — — —
45
(W) 46
(R) Sound signal LH Input Ignition
switch
ON When DVD, USB or front
AUX mode is selected on
headrest display unit LH or
RH.
47
(B) 48
(G) Sound signal RH Input Ignition
switch ON When DVD, USB or front
AUX mode is selected on
headrest display unit LH or
RH.
49 — Shield — — — —
53 — Shield — — — — Terminal
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
SKIB2251J
SKIB2251J
SKIB2251J
SKIB3609E
SKIB3609E
Revision: 2010 May2011 QX56

AV-136
< DTC/CIRCUIT DIAGNOSIS >
U1225 AV CONTROL UNIT
U1225 AV CONTROL UNIT
DTC LogicINFOID:0000000006216283
DTC DETECTION LOGIC
DTCDisplay contents of CON-
SULT-III DTC detection condition Possible malfunction factor
U1225 USB CONTROLLER
[U1225]
USB connection malfunction is detected. Check that the connection to the USB con-
nector is normal.
Revision: 2010 May2011 QX56

AV-148
< DTC/CIRCUIT DIAGNOSIS >
U1263 USB
U1263 USB
DTC LogicINFOID:0000000006216299
Diagnosis ProcedureINFOID:0000000006216300
1.CHECK USB HARNESS
Visually check USB harness.
Is the inspection result normal?
YES >> Replace AV control unit. Refer to AV-212, "Removal and Installation".
NO >> Replace USB harness.
DTC Display contents of
CONSULT-III DTC detection condition Possible malfunction factor
U1263 USB OVERCURRENT
[U1263] Detection of overcurrent in USB connector. Check USB harness between the AV
control unit and USB connector.
Revision: 2010 May2011 QX56

AV
COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DIS-
PLAY UNIT)
AV-167
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
COMPOSITE IMAGE SIGNAL CIRCUI T (AV CONTROL UNIT TO FRONT
DISPLAY UNIT)
DescriptionINFOID:0000000006216328
 DVD is played by inserting DVD into the AV control unit.
 DVD image signals are transmitted to the front display unit and video distributor.
 AV control unit receives the image signal from the front auxiliary input jacks and then transmits it to the front
display unit.
 AV control unit receives the image signal from the USB (video data) and then transmits it to the front display
unit and video distributor.
 Video distributor receives the image signal from the AV control unit and then transmits it to the headrest dis-
play unit.
Diagnosis ProcedureINFOID:0000000006216329
1.CHECK CONTINUITY COMPOS ITE IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector and front display unit connector.
3. Check continuity between AV control unit harness connector and front display unit harness connector.
4. Check continuity between AV control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK COMPOSITE IMAGE SIGNAL
1. Connect AV control unit connector and front display unit connector.
2. Turn ignition switch ON.
3. Check signal between AV control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace front display unit. Refer to AV-213, "Removal and Installation".
NO >> Replace AV control unit. Refer to AV-212, "
Removal and Installation".
AV control unit Front display unit
Continuity
Connector Terminal Connector Terminal
M210 68 M215 18 Existed
AV control unit GroundContinuity
Connector Terminal
M210 68 Not existed
(+) (− ) Condition Reference value
AV control unit
Connector Terminal
M210 68 Ground At DVD image is displayed.
SKIB2251J
Revision: 2010 May2011 QX56