ECU INFINITI QX56 2010 Factory Repair Manual

AV
AV-3
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Description ..........................................................
....
81
Diagnosis Procedure ...............................................81
RGB AREA (YS) SIGNAL CIRCUIT ..................82
Description .......................................................... ....82
Diagnosis Procedure ...............................................82
HORIZONTAL SYNCHRONIZING (HP) SIG-
NAL CIRCUIT ................................................. ....
83
Description .......................................................... ....83
Diagnosis Procedure ...............................................83
VERTICAL SYNCHRONIZING (VP) SIGNAL
CIRCUIT ......................................................... ....
84
Description .......................................................... ....84
Diagnosis Procedure ...............................................84
FRONT DOOR SPEAKER .................................85
Description .......................................................... ....85
Diagnosis Procedure ...............................................85
FRONT TWEETER .............................................88
Description .......................................................... ....88
Diagnosis Procedure ...............................................88
CENTER SPEAKER ...........................................91
Description .......................................................... ....91
Diagnosis Procedure ...............................................91
REAR DOOR SPEAKER ....................................93
Description .......................................................... ....93
Diagnosis Procedure ...............................................93
REAR DOOR TWEETER ...................................96
Description .......................................................... ....96
Diagnosis Procedure ...............................................96
BACK DOOR SPEAKER ...................................99
Description .......................................................... ....99
Diagnosis Procedure ...............................................99
SUBWOOFER ..................................................102
Description .......................................................... ..102
Diagnosis Procedure .............................................102
AMP ON SIGNAL CIRCUIT .............................105
Description .......................................................... ..105
Diagnosis Procedure .............................................105
STEERING SWITCH ........................................106
Description .......................................................... ..106
Diagnosis Procedure .............................................106
MICROPHONE SIGNAL CIRCUIT ...................108
Description .......................................................... ..108
Diagnosis Procedure .............................................108
ECU DIAGNOSIS .......................................110
AV CONTROL UNIT ....................................... ..110
Reference Value ................................................. ..110
Wiring Diagram .....................................................116
DTC Index ........................................................... ..144
DISPLAY UNIT ................................................146
Reference Value ....................................................146
BOSE SPEAKER AMP ...................................149
Reference Value ....................................................149
REAR VIEW CAMERA CONTROL UNIT .......152
Reference Value ....................................................152
DVD PLAYER ..................................................154
Reference Value ....................................................154
SYMPTOM DIAGNOSIS ............................156
MULTI AV SYSTEM ........................................156
Symptom Table ................................................... ..156
NORMAL OPERATING CONDITION .............158
Description .............................................................158
PRECAUTION ............................................166
PRECAUTIONS ...............................................166
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
166
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
166
PREPARATION .........................................168
PREPARATION ...............................................168
Commercial Service Tools ................................... ..168
ON-VEHICLE REPAIR ...............................169
AV CONTROL UNIT ........................................169
Removal and Installation ..................................... ..169
DISPLAY UNIT ................................................171
Removal and Installation .......................................171
FRONT TWEETER ..........................................172
Removal and Installation .......................................172
CENTER SPEAKER ........................................173
Removal and Installation .......................................173
FRONT DOOR SPEAKER ..............................174
Removal and Installation .......................................174
REAR DOOR SPEAKER ................................175
Removal and Installation .......................................175
BACK DOOR SPEAKER ................................176
Removal and Installation .......................................176
SUBWOOFER .................................................177
Removal and Installation .......................................177
DVD PLAYER ..................................................178
Removal and Installation .......................................178
Revision: April 20092010 QX56

AV-38
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Deletes any unit connection records and error records from the AV
control unit memory. (Clear the records of the unit that has been
removed)
Inititialize Settings
Initializes the AV control unit memory.
AV CONTROL UNIT : CONSULT-III FunctionINFOID:0000000005146243
CONSULT-III can display each diagnostic item us
ing the diagnostic test modes shown following.
Self-diagnosis results
• In CONSULT-III self-diagnosis, self-diagnosis results and error history are displayed collectively.
• The current malfunction indicates “CRNT”. The past malfunction indicates “PAST”.
• The timing is displayed as “0” if any of the error codes [U1000], [U1010], [U1300] and [U1310] is detected.
The counter increases by 1 if the condition is normal at the next ignition switch ON cycle.
Self-diagnosis results display item
ALNIA0239GB
ALNIA0240GB
MULTI AV diagnosis mode Description
SELF-DIAG RESULTS Displays AV control unit self-diagnosis results.
DATA MONITOR Displays AV control unit input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
AV COMM MONITOR Allows the technician to monitor the status of the Multi AV system communication signals.
ECU PART NUMBER The part number of AV control unit can be checked.
Error item DescriptionPossible malfunction factor/Action to take
CAN COMM CIRCUIT[U1000] CAN communication malfunction is detect-
ed.Perform diagnosis with CONSULT-III, and
then repair the malfunctioning parts accord-
ing to the diagnosis results.
Refer to
AV- 3 8 , "
AV CONTROL UNIT :
CONSULT-III Function".
Revision: April 20092010 QX56

AV-110
< ECU DIAGNOSIS >[AUDIO SYSTEM]
AV CONTROL UNIT
ECU DIAGNOSIS
AV CONTROL UNIT
Reference ValueINFOID:0000000005146345
VALUES ON THE DIAGNOSIS TOOL
CONSULT-III data monitor item
TERMINAL LAYOUT
PHYSICAL VALUES
Display ItemDis-
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
Terminal
(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: April 20092010 QX56

AV
AV CONTROL UNITAV-111
< ECU DIAGNOSIS > [AUDIO SYSTEM]
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(L) 5
(B/W) Pre-amp. audio signal rear
LH
OutputIgnition
switch ON Audio output
6
(Y) 15 Steering switch signal A Input Ignition
switch
ON Pressing switch
0V
Pressing switch 0.75
Pressing VOL up switch 2V
Except for above 5V
7
(V) Ground ACC power supply
InputIgnition
switch ACC −
Battery voltage
9
(R/L) Ground Illumination signal
Input OFFLighting switch is OFF
0V
Lighting switch is ON Battery voltage
10 — Shield — —— —
11
(BR) 12
(B/R) Pre-amp. audio signal front
RH
OutputIgnition
switch ON Audio output
13
(W) 14
(B) Audio signal rear RH Output Ignition
switch
ON Audio output
15 Ground Steering switch signal
ground —Ignition
switch
ON —0
V
16
(BR) 15 Steering switch signal B Input Ignition
switch ON Pressing switch
0V
Pressing switch 0.75V
Pressing VOL down switch 2V
Except for above 5V
19
(Y) Ground Battery power supply Input Ignition
switch OFF —
Battery voltage
20
(B) Ground Ground
—Ignition
switch
ON —0
V
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3609E
SKIB3609E
SKIB3609E
Revision: April 20092010 QX56

AV-112
< ECU DIAGNOSIS >[AUDIO SYSTEM]
AV CONTROL UNIT
21
(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
Terminal
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB2238J
SKIB2236J
SKIB2237J
SKIB3603E
PKIB4948J
Revision: April 20092010 QX56

AV
AV CONTROL UNITAV-113
< ECU DIAGNOSIS > [AUDIO SYSTEM]
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(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
AV CONTROL UNITAV-115
< ECU DIAGNOSIS > [AUDIO SYSTEM]
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(B) 71 MIC signal
InputIgnition
switch ON ——
79
(G/R) Ground
IGN ON or START power
supply InputIgnition
switch ON or
START —
Battery voltage
80
(G) Ground Parking brake signal Input Ignition
switch ON Parking brake ON
0V
Parking brake OFF Battery voltage
81
(G/W) Ground Reverse signal
InputIgnition
switch
ON R position
Battery voltage
Other than R position 0V
82
(W/R) Ground
Vehicle speed signal (8-
pulse) InputIgnition
switch
ON When vehicle speed is ap-
prox. 40 km/h (25MPH)
84
(BR) —Rear view camera control
signal
Input —
— —
86
(B) Ground Ground
—Ignition
switch ON —0
V
87
(B) Ground Ground
—Ignition
switch
ON —0
V
92
(L/W) —
AV communication signal 2
(H) Input/
Output ——
—
93
(B/P) —AV communication signal 2
(L) Input/
Output ——
—
94
(W/L) —AV communication signal 1
(H) Input/
Output ——
—
95
(P/B) —
AV communication signal 1
(L) Input/
Output ——
—
96
(L) —CAN–H Input/
Output ——
—
97
(P) —C

AN–L Input/
Output ——
—
121 (B) Ground Antenna amp. ON signal Output Ignition
switch ACC —
Battery voltage
122 (B) — Amplified window antenna
signal
Input —
— —
123 — GPS antenna signal — —— —
124 — Shield — —— —
125 — Satellite antenna signal Input Ignition
switch ACC ——
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIA6649J
Revision: April 20092010 QX56

AV-116
< ECU DIAGNOSIS >[AUDIO SYSTEM]
AV CONTROL UNIT
Wiring Diagram
INFOID:0000000005146346
ABNWA0012GB
Revision: April 20092010 QX56

AV
AV CONTROL UNITAV-117
< ECU DIAGNOSIS > [AUDIO SYSTEM]
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ALNWA0084GB
Revision: April 20092010 QX56