2011 INFINITI QX56 ECU

DIAGNOSIS AND REPAIR WORK FLOWADP-49
< BASIC INSPECTION >
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1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred).
>> GO TO 2.
2.CHECK DTC WITH AUTOMATIC DRIVE POSITIONER SYSTEM
Check “Self Diagnostic Result” with CONSULT-III. Refer to ADP-31, "
DTCIndex"
Is any symptom described and any DTC is displayed?
Symptom is described, DTC is displayed.>>GO TO 3.
Symptom is not described, DTC is displayed.>>GO TO 6.
Symptom is described, DTC is not displayed.>>GO TO 4.
3.CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
>> GO TO 6.
4.CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
>> GO TO 5.
5.CHECK NORMAL OPERATING CONDITION
Check normal operating condition. Refer to ADP-134, "
Description".
Is the incident normal operation?
YES >> INSPECTION END
NO >> GO TO 7.
6.PERFORM DTC CONFIRMATION PROCEDURE
Perform the confirmation pr ocedure for the detected DTC.
Is the DTC displayed?
YES >> GO TO 8.
NO >> Check intermittent incident. Refer to GI-40, "
Intermittent Incident".
7.PERFORM COMPONENT FUNCTION CHECK
Perform the component function check for the isolated malfunctioning point.
>> GO TO 8.
8.DETECT MALFUNCTIONING PA RT BY DIAGNOSTIC PROCEDURE
Isolate the malfunctioning point by performing the diagnos is procedure relevant to the symptom during the
component diagnosis.
>> GO TO 9.
9.REPARE OR REPLACE THE MALFUNCTIONING PARTS
Repair or replace the malfunctioning part.
>> GO TO 10.
10.FINAL CHECK
Perform the DTC confirmation procedure (if DTC is detected) or component function check (if no DTC is
detected) again, and then check that the malfunction can be repaired securely.
Are all malfunctions corrected?
Revision: 2010 May2011 QX56

ADP-134
< SYMPTOM DIAGNOSIS >
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006248440
The following symptoms are normal operations, and they do not indicate a malfunction.
Symptom Cause Action to take Reference page
Entry/exit assist function do not
operate. No initialization has been performed. Perform initialization.
ADP-52, "
SYSTEM INI-
TIALIZATION : Descrip-
tion"
Entry/exit assist function is disabled.
NOTE:
Entry/exit assist function is set to ON be-
fore delivery (initial setting).Change the settings.
ADP-54, "
SYSTEM
SETTING : Description"
Entry assist function does not op-
erate. Manual operation with power seat switch
was performed after exit assist function
execution. Perform the entry as-
sist function. ADP-18, "ENTRY AS-
SIST FUNCTION : Sys-
tem Description"
Lumbar support does not per-
form memory operation. The lumbar support system are con-
trolled independently with no link to the
automatic drive positioner system.
—
SE-16, "LUMBAR SUP-
PORT SYSTEM : Sys-
tem Description"
Memory function, entry/exit as-
sist function, or Intelligent Key in-
terlock function does not
operate. The operating conditions are not fulfilled.
Fulfill the operation
conditions. Memory function :
ADP-15, "
MEMORY
FUNCTION : System
Description"
Entry assist function :
ADP-18, "
ENTRY AS-
SIST FUNCTION : Sys-
tem Description"
Exit assist function :
ADP-17, "
EXIT ASSIST
FUNCTION : System
Description"
Intelligent Key interlock function : ADP-20, "
IN-
TELLIGENT KEY IN-
TERLOCK FUNCTION :
System Description"
Revision: 2010 May2011 QX56

AV
AV-1
DRIVER INFORMATION & MULTIMEDIA
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SECTION AV
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CONTENTS
AUDIO, VISUAL & NAVIGATION SYSTEM
PRECAUTION ................ ...............................6
PRECAUTIONS .............................................. .....6
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
6
Precaution for Trouble Diagnosis ..............................6
Precaution for Harness Repair ..................................6
PREPARATION ............................................8
PREPARATION .............................................. .....8
Commercial Service Tools .................................. ......8
SYSTEM DESCRIPTION ..............................9
COMPONENT PARTS ................................... .....9
Component Parts Location .................................. ......9
Component Description ...........................................10
SYSTEM .............................................................13
MULTI AV SYSTEM .............................................. ....13
MULTI AV SYSTEM : System Diagram ..................13
MULTI AV SYSTEM : System Description ..............14
MULTI AV SYSTEM : Fail-Sa fe .......................... ....27
DIAGNOSIS SYSTEM (AV CONTROL UNIT) ....28
Description .......................................................... ....28
On Board Diagnosis Function .................................28
CONSULT-III Function ............................................39
DIAGNOSIS SYSTEM (AROUND VIEW MON-
ITOR CONTROL UNIT) ......................................
44
On Board Diagnosis Function ............................. ....44
DIAGNOSIS SYSTEM [SONAR CONTROL
UNIT (WITH AROUND VIEW MONITOR)] .........
47
CONSULT-III Function ........................................ ....47
DIAGNOSIS SYSTEM (HEADREST DISPLAY
UNIT) ..................................................................
49
Description .......................................................... ....49
On Board Diagnosis Function .............................. ....49
ECU DIAGNOSIS INFORMATION ..............51
AV CONTROL UNIT ..........................................51
Reference Value .................................................. ....51
Fail-Safe ..................................................................57
DTC Index ...............................................................57
FRONT DISPLAY UNIT ....................................60
Reference Value ......................................................60
HEADREST DISPLAY UNIT .............................62
Reference Value ......................................................62
VIDEO DISTRIBUTOR ......................................64
Reference Value ......................................................64
BOSE AMP. .......................................................68
Reference Value ......................................................68
AROUND VIEW MONITOR CONTROL UNIT ...71
Reference Value ......................................................71
SONAR CONTROL UNIT (WITH AROUND
VIEW MONITOR) ..............................................
75
Reference Value ......................................................75
Fail-Safe ..................................................................77
DTC Index ...............................................................77
WIRING DIAGRAM ......................................78
BOSE AUDIO WITH NAVIGATION ..................78
Wiring Diagram .................................................... ....78
BASIC INSPECTION .................................104
DIAGNOSIS AND REPAIR WORK FLOW .....104
Work Flow (Multi AV) ........................................... ..104
Work Flow (Camera Assistance Sonar) ................106
ADDITIONAL SERVICE WHEN REPLACING
(AV CONTROL UNIT) .....................................
108
Revision: 2010 May2011 QX56

AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-39
< SYSTEM DESCRIPTION >
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Deletes any unit connection records and error records from the AV
control unit memory. (Clear the records of the unit that has been
removed.)
Initialize Settings
“User Data Initialization” and “Accessory Number Initialization” are
possible.
CAUTION:
 Never perform Accessory Number Initialization except when configuration is unsuccessful.
 Accessory Number Initialization requires configuration. For
details, refer to AV-109, "
Description".
Version Information
Version information of the AV control unit is displayed.
CONSULT-III FunctionINFOID:0000000006216220
APPLICATION ITEMS
CONSULT-III performs the following functions via the communication with the AV control unit.
JSNIA2189ZZ
JSNIA2190ZZ
JSNIA2191ZZ
Diagnosis mode Description
Ecu Identification The part number of AV control unit can be checked.
Self Diagnostic Result Performs a diagnosis on the AV control unit and a connection diagnosis for the communication
circuit of the Multi AV system, and displays the current and past malfunctions collectively.
Revision: 2010 May2011 QX56

AV-40
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV Communication
When “AV communication” of “CAN Diag Support Monitor” is selected, the f\
ollowing function will be performed.
ECU IDENTIFICATION
The part number of AV control unit is displayed.
SELF DIAGNOSIS RESULT
 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 e rror 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
Data Monitor The diagnosis of vehicle signal that is input to the AV control unit can be performed.
Work Support Steering angle sensor can be adjusted.
Configuration Read and save the vehicle specification.
 Write the vehicle specification when replacing AV control unit.
Diagnosis mode Description
AV communication
AV&NAVI C/U
Displays the communication status from AV control unit to each unit as well as the error
counter.
AUDIO Displays the AV control unit communication status and the error counter.
Error item Description Possible malfunction factor/Action to take
CAN COMM CIRCUIT [U1000] CAN communication malfunction is detect-
ed.Refer to
AV- 11 8 , "
DiagnosisProcedure".
CONTROL UNIT (CAN) [U1010] CAN initial diagnosis malfunction is detect-
ed.
Replace the AV control unit if the malfunc-
tion occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
CONTROL UNIT (AV) [U1310]
AV communication circuit initial diagnosis
malfunction is detected.
Cont Unit [U1200]
AV control unit malfunction is detected.
GYRO NO CONN [U1201]
G-SENSOR NO CONN [U1202]
CAN CONT [U1216]
BLUETOOTH MODULE [U1217]
SUB CPU CONN [U1228]
iPod CERTIFICATION [U1229]
Built-in AUDIO CONN [U122E]
HDD CONN [U1218]
AV control unit malfunction is detected. If the music box function has no mal-
functions, then there is a possibility of
the detection of a temporary malfunc-
tion.
 Replace the AV control unit if the mal- function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
HDD READ [U1219]
HDD WRITE [U121A]
HDD COMM [U121B]
HDD ACCESS [U121C]
GPS COMM [U1204]
GPS malfunction is detected. An intermittent error caused by strong
radio interference may be detected un-
less any symptom (GPS reception error,
etc.) occurs.
 Replace the AV control unit if the mal- function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
GPS ROM [U1205]
GPS RAM [U1206]
GPS RTC [U1207]
USB CONTROLLER [U1225] USB connection malfunction is detected.
Check that the connection to the USB con-
nector is normal.
Revision: 2010 May2011 QX56

AV
DIAGNOSIS SYSTEM [SONAR CONTROL UNIT (WITH AROUND VIEW MONI-
TOR)]
AV-47
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM [SONAR CONT ROL UNIT (WITH AROUND VIEW
MONITOR)]
CONSULT-III FunctionINFOID:0000000006216222
APPLICATION ITEMS
CONSULT-III can display each diagnostic item using the diagnostic test modes shown as follows:
ECU IDENTIFICATION
Displays the part number of sonar control unit.
SELF-DIAGNOSTIC RESULTS
For details, refer to AV-77, "DTC Index".
DATA MONITOR
*: Even when a buzzer (backward) is output c ondition, this item is indicated as OFF.
ACTIVE TEST
WORK SUPPORT
CORNER SEN DISTANCE SET
Corner sensor warning buzzer distance can be set to 4 phases as follows.
Test mode Function
Ecu Identification Sonar control unit part number can be read.
Self Diagnostic Result Sonar control unit checks the conditions and displays memorized error.
Data Monitor Sonar control unit input/output data in real time.
Active Test Gives a drive signal to a load to check the operation.
Work support Changes setting of each function.
Monitor Item Display Description
SONAR OPE On Around view monitor is ON. (sonar system is ON)
Off Around view monitor is OFF. (sonar system is OFF)
BUZZER OUTPUT
*On Buzzer (forward) is output condition. Off Buzzer (forward) is non-output condition.
CR SEN [FL]
CR SEN [FR]
CR SEN [RL]
CR SEN [RR] ERROR When a sensor is abnormal.
LV.0 When a sensor is not detection.
LV. 2 The distance between the corner sensor and an obstacle is 50 cm (19.6 in) or more and
less then 60 cm (23.6 in).
LV. 3 The distance between the corner sensor and an obstacle is 30 cm (11.8 in) or more and
less then 50 cm (19.6 in).
LV.4 The distance between corner sensor and an obstacle less than 30 cm (11.8 in).
Active test item Function
BUZZER This test is able to check buzzer operation.
SONAR SENSOR This test is able to check each sonar sensor operation.
Work support item Function
CORNER SEN DISTANCE SET Corner sensor warning buzzer distance is adjustable to 4 phases.
Revision: 2010 May2011 QX56

AV
AV CONTROL UNITAV-51
< ECU DIAGNOSIS INFORMATION >
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ECU DIAGNOSIS INFORMATION
AV CONTROL UNIT
Reference ValueINFOID:0000000006216225
VALUES ON THE DIAGNOSIS TOOL
CONSULT-III MONITOR ITEM
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor Item Condition Value/Status
VHCL SPD SIG Ignition switch
ONVehicle speed >= 8 km/h (5 MPH) On
Vehicle speed < 8 km/h (5 MPH) Off
PKB SIG Ignition switch
ONParking brake is applied. On
Parking brake is released. Off
ILLUM SIG Ignition switch
ONBlock the light from the auto light optical sen-
sor when the lighting switch is 1st or 2nd.
On
Expose the auto light optical sensor to light
when the lighting switch is OFF, 1st or 2nd. Off
IGN SIG Ignition switch
ON
—On
Ignition switch
ACC —Off
REV SIG Ignition switch
ONSelector lever is in the R position On
Selector lever in any position other than R Off
SIDE VIEW SW Ignition switch
ONThis item is displayed, but cannot be moni-
tored.
Off
ROOM LAMP Ignition switch
ONThis item is displayed, but cannot be moni-
tored.
Off
JSNIA2480ZZ
Revision: 2010 May2011 QX56

AV-52
< ECU DIAGNOSIS INFORMATION >
AV CONTROL UNIT
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
1
(W/B) Ground BOSE amp. ON signal Output Ignition
switch ACC —12.0 V
2
(L) 3
(P) Sound signal front LH Output Ignition
switch ON Sound output
4
(V) 5
(LG) Sound signal rear LH Output Ignition
switch
ON Sound output
6
(Y/G) 15
(B) Steering switch signal A Input Ignition
switch
ON Keep pressing SOURCE
switch.
0 V
Keep pressing MENU UP
switch. 1.0 V
Keep pressing MENU
DOWN switch. 2.0 V
Keep pressing switch 3.0 V
Keep pressing ENTER
switch. 4.0 V
Except for above. 5.0 V
7
(V) Ground ACC power supply Input Ignition
switch ACC — Battery voltage
11
(Y/L) 12
(Y/G) Sound signal front RH Output Ignition
switch
ON Sound output
13
(O) 14
(W) Sound signal rear RH Output Ignition
switch ON Sound output
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E
Revision: 2010 May2011 QX56