ECO mode INFINITI QX56 2011 Factory Service Manual

DAS
U1000 CAN COMM CIRCUITDAS-485
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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U1000 CAN COMM CIRCUIT
SIDE RADAR LH
SIDE RADAR LH : DescriptionINFOID:0000000006223905
CAN COMMUNICATION
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communicati on speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control units , and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads the required data only.
CAN communication signal chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
ITS COMMUNICATION
 ITS communication is a multiplex communication syste m. This enables the system to transmit and receive
large quantities of data at high speed by connec ting control units with 2 communication lines.
 ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
SIDE RADAR LH : DTC LogicINFOID:0000000006223906
DTC DETECTION LOGIC
SIDE RADAR LH : Diagnosis ProcedureINFOID:0000000006223907
1.PERFORM THE SELF-DIAGNOSIS
1. Start the engine.
2. Turn the BSW system ON, and then wait for 2 seconds or more.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U1000” is detected as the current malfunction in “Self Diagnostic Result” of “SIDE RADAR
LEFT”.
Is
“U1000” detected as the current malfunction?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
SIDE RADAR RH
SIDE RADAR RH : DescriptionINFOID:0000000006223908
CAN COMMUNICATION
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communicati on speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control units , and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads the required data only.
CAN communication signal chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
ITS COMMUNICATION
 ITS communication is a multiplex communication syste m. This enables the system to transmit and receive
large quantities of data at high speed by connec ting control units with 2 communication lines.
 ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
DTC Trouble diagnosis name DTC detecting condition Possible causes
U1000 CAN COMM CIRCUIT If Side radar LH is not transmitting or receiving ITS
communication signal for 2 seconds or more ITS communication system
Revision: 2010 May2011 QX56

DAS-486
< DTC/CIRCUIT DIAGNOSIS >[BSW]
U1000 CAN COMM CIRCUIT
SIDE RADAR RH : DTC Logic
INFOID:0000000006223909
DTC DETECTION LOGIC
SIDE RADAR RH : Diagnosis ProcedureINFOID:0000000006223910
1.PERFORM THE SELF-DIAGNOSIS
1. Start the engine.
2. Turn the BSW system ON, and then wait for 2 seconds or more.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “U1000” is detected as the current ma lfunction in “Self Diagnostic Result” of “SIDE RADAR
RIGHT”.
Is
“U1000” detected as the current malfunction?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DescriptionINFOID:0000000006223911
CAN COMMUNICATION
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control units , and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H, CAN-L) allowing a hi gh rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads the required data only.
CAN communication signal chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
ITS COMMUNICATION
 ITS communication is a multiplex communication system . This enables the system to transmit and receive
large quantities of data at high speed by connecting control units with 2 communication lines.
 ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006223912
DTC DETECTION LOGIC
NOTE:
If “U1000” is detected, first diagnose the CAN communication system.
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006223913
1.PERFORM THE SELF-DIAGNOSIS
1. Turn the ignition switch ON.
2. Turn the BSW system ON, and then wait for 30 seconds or more.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “U1000” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
DTC Trouble diagnosis name DTC detecting condition Possible causes
U1000 CAN COMM CIRCUIT If Side radar RH is not transmitting or receiving
ITS communication signal for 2 seconds or more ITS communication system
DTC
(On board display) Trouble diagnosis name DTC detecting condition Possible causes
U1000 (100) CAN COMM CIRCUIT If ADAS control unit is not transmitting or receiv-
ing CAN communication signal or ITS communi-
cation signal for 2 seconds or more  CAN communication system
 ITS communication system
Revision: 2010 May2011 QX56

DIAGNOSIS SYSTEM (BCM)DEF-7
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Fu nction (BCM - COMMON ITEM)INFOID:0000000006349773
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
×: Applicable item
*: This item is indicated, but not used.
FREEZE FRAME DATA (FFD)
The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT-III.
Diagnosis mode Function Description
Work Support Changes the setting for each system function.
Self Diagnostic Result Displays the diagnosis results judged by BCM. Refer to BCS-57, "
DTCIndex".
CAN Diag Support Monitor Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.
Data Monitor The BCM input/output signals are displayed.
Active Test The signals used to activate each device are forcibly supplied from BCM.
Ecu Identification The BCM part number is displayed.
Configuration  Read and save the vehicle specification.
 Write the vehicle specification when replacing BCM.
System Sub system selection item Diagnosis mode
Work Support Data Monitor Active Test
Door lock DOOR LOCK ×××
Rear window defo gger REAR DEFOGGER ××
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ×××
— AIR CONDITONER* ××
 Intelligent Key system
 Engine start system INTELLIGENT KEY
×××
Combination switch COMB SW ×
Body control system BCM ×
IVIS IMMU ×××
Interior room lamp battery saver BATTERY SAVER ×××
Back door TRUNK ×
Vehicle security system THEFT ALM ×××
RAP system RETAINED PWR ×
Signal buffer system SIGNAL BUFFER ××
Revision: 2010 May2011 QX56

DLK-16
< SYSTEM DESCRIPTION >
SYSTEM (POWER DOOR LOCK SYSTEM)
SYSTEM (POWER DOOR LOCK SYSTEM)
System DiagramINFOID:0000000006225837
System DescriptionINFOID:0000000006225838
DOOR LOCK FUNCTION
Door Lock and Unlock Switch
 The door lock and unlock switch (driver side) is build into power window main switch.
 The door lock and unlock switch (passenger side) is build into front power window switch (passenger side).
 Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all doors and
fuel lid lock actuator are locked.
 Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all doors actu-
ator and fuel lid lock actuator are unlocked.
Door Key Cylinder Switch
 With the mechanical key inserted in the door key cylinder on driver side, turning it to lock position, locks door
lock actuator of all doors and fuel lid lock actuator.
 With the mechanical key inserted in the door key cylinder on driver side, turning it to unlock position once
unlocks the driver side door, turning it to unlock posit ion again within 60 seconds after the first unlock opera-
tion unlocks all of the other doors actuator and fuel lid lock actuator. (SELECTIVE UNLOCK OPERATION)
Selective unlock operation mode can be changed using CONSULT-III.
Refer to DLK-39, "
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
DOOR KEY CYLINDER SWITCH POWER WINDOW FUNCTION
Driver side door key cylinder LOCK/UNLOCK oper ation can activate power window. Refer to PWC-8, "System
Description".
IGNITION POSITION WARNING FUNCTION
When door lock and unlock switch are operated while dr iver side door is open and ignition position is ACC or
ON, door locks once but immediately unlocks.
INTERIOR ROOM LAMP CONTROL FUNCTION
Interior room lamp is controlled according to door lock/unlock state, refer to INL-6, "INTERIOR ROOM LAMP
CONTROL SYSTEM : System Description".
AUTOMATIC DOOR LOCK/UNLOCK FUNCTION (LOCK OPERATION)
The interlock door lock function is the function that locks all doors linked with the vehicle speed or shift posi-
tion. It has 2 types as per the following items.
Vehicle Speed Sensing Auto Door Lock
All doors are locked when the vehicle speed reaches 24 km/h (15 MPH) or more.
BCM outputs the lock signal to all door lock actuators when it detects that the ignition switch is turned ON, all
doors are closed and the vehicle speed received from the combination meter via CAN communication
becomes 24 km/h (15 MPH) or more.
JMKIA5278GB
Revision: 2010 May2011 QX56

DLK-20
< SYSTEM DESCRIPTION >
SYSTEM (INTELLIGENT KEY SYSTEM)
OPERATION CONDITION
If the following conditions are satisfied, door lock/unlock operation is performed if the door request switch is
operated.
*: Even with a registered Intelligent Key remaining inside the vehicle, door locks can be locked/unlocked from outside of the v ehicle with
a spare Intelligent Key as long as key IDs are different.
OUTSIDE KEY ANTENNA DETECTION AREA
The outside key antenna detection area of door lock/unlock function
is in the range of approximately 80 cm (31.50 in) surrounding the
driver, passenger door handles (1) and back door handle (2). How-
ever, this operating range depends on the ambient conditions.
SELECTIVE UNLOCK FUNCTION
Lock Operation
When an LOCK signal is sent from door request switch (driver side, passenger side, back door), all doors and
fuel filler lid are locked.
Unlock Operation
 When an UNLOCK signal from driver side door request swit ch is transmitted, driver side door and fuel filler
lid are unlocked. When another UNLOCK signal is tr ansmitted within 60 seconds, all other doors (except
back door) are unlocked.
 When an UNLOCK signal from passenger side door reques t switch is transmitted, passenger side door is
unlocked. When another UNLOCK signal is transmitt ed within 60 seconds, all other doors (except back
door) and fuel filler lid are unlocked.
 When an UNLOCK signal from back door request switch is transmitted, back door open permission is set.
When another UNLOCK signal is transmitted within 60 seconds, all doors (except back door) and fuel filler
lid are unlocked.
How To Change Selective Unlock Operation Mode
Selective unlock operation mode can be changed using CONSULT-III.
Refer to DLK-41, "
INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)".
HAZARD AND BUZZER REMINDER FUNCTION
During lock or unlock operation by each door request switch, the hazard warning lamps and Intelligent Key
warning buzzer blinks or honks as a reminder.
Operating Function Of Hazard And buzzer Reminder
Hazard and buzzer reminder does not operate in the following conditions.
 Ignition switch position is ON
Each door request switch operation Operation condition
Lock  All doors are closed
 Panic alarm is not activated
 P position warning is not activated
 Intelligent Key is outside the vehicle
 Intelligent Key is within outside key antenna detection area*
Unlock  Panic alarm is not activated
 Intelligent Key is outside the vehicle
 Intelligent Key is within outside key antenna detection area*
JMKIA5224ZZ
Operation Hazard warning lamp blinks Intelligent Key warning buzzer honks
Unlock Once OnceLock Twice Twice
Revision: 2010 May2011 QX56

SYSTEM (INTELLIGENT KEY SYSTEM)
DLK-21
< SYSTEM DESCRIPTION >
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 Door is open (only lock operation)
How To Change Hazard And Buzzer Reminder Mode
Hazard and buzzer reminder mode can be changed using CONSULT-III.
Refer to DLK-41, "
INTELLIGENT KEY : CONSULT-III F unction (BCM - INTELLIGENT KEY)".
AUTO DOOR LOCK FUNCTION
After door is unlocked by door request switch operation and if 60 seconds or more passes without performing
the following operation, all doors and fuel filler lid are automatically locked. However, operation check function
does not activate.
How To Change Auto Door Lock Operation Mode
Auto door lock operation mode can be changed using CONSULT-III.
Refer to DLK-41, "
INTELLIGENT KEY : CONSULT-III F unction (BCM - INTELLIGENT KEY)".
LIST OF OPERATION RELATED PARTS
Parts marked with × are the parts related to operation.
BACK DOOR OPEN FUNCTION
BACK DOOR OPEN FUNCTION : System DiagramINFOID:0000000006225843
BACK DOOR OPEN FUNCTION : System DescriptionINFOID:0000000006225844
This section describes the operat ion of the back door opener switch.
Operating condition  Door switch is ON (door is open)
 Door is locked
 Push switch is pressed
Function
Intelligent Key
Remote keyless entry receiver
Door switch
Door request switch
Door lock actuator
Fuel lid lock actuator Inside key antenna
Outside key antenna
CAN communication system
BCM
Hazard warning lamp
Intelligent Key warning buzzer Push-button ignition switch
Door lock/unlock function ×××××××× ×
Hazard reminder function ××××
Selective unlock function × ××××× ×
Auto door lock function ×××××
JMKIA5082GB
Revision: 2010 May2011 QX56

DLK-24
< SYSTEM DESCRIPTION >
SYSTEM (INTELLIGENT KEY SYSTEM)
OPERATION CONDITION
If the following condition are satisfied, remote keyless entry operation is performed when the Intelligent Key is
operated.
SELECTIVE UNLOCK FUNCTION
 When an LOCK signal is transmitted from Intelligent Key, all doors and fuel filler lid are locked.
 When an UNLOCK signal is transmitted from Intelligent Key once, driver side door and fuel filler lid are
unlocked.
 Then, if an UNLOCK signal is transmitted from Inte lligent Key again within 60 seconds, all other doors
(except for back door) are unlocked.
How to change selective unlock operation mode.
Selective unlock operation mode can be changed using CONSULT-III.
Refer to DLK-39, "
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
AUTO DOOR LOCK FUNCTION
After door is unlocked by Intelligent Key button operati on and if 60 seconds or more passes without performing
the following operation, all doors are locked. Howe ver, operation check function does not activate.
How to change auto door lock operation mode.
Auto door lock mode can be changed using CONSULT-III.
Refer to DLK-41, "
INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)".
HAZARD AND HORN REMINDER FUNCTION
When doors are locked or unlocked by Intelligent Key, BCM blinks hazard warning lamps as a reminder.
The hazard and horn reminder has a horn chirp mode (C mode) and a non-horn chirp mode (S mode).
Operating Function of Hazard and Horn Reminder
Hazard and horn reminder does not operate in the following conditions.
 Ignition switch position is ON.
 Door is open (only lock operation)
How to Change Hazard and Horn Reminder Mode
With CONSULT-III
Hazard and horn reminder operation mode can be changed using CONSULT-III.
Refer to DLK-41, "
INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)".
Without CONSULT-III
Remote controller operation Operation condition
Lock  Panic alarm is not activated
 P position warning is not activated
Unlock Panic alarm is not activated
Operating condition  Door switch is ON
(door is open)
Door is locked
 Push switch is pressed
C mode S mode
Intelligent Key operation Lock Unlock Lock Unlock
Hazard warning lamp blinks Twice Once Twice —
Horn sound Once — — —
Revision: 2010 May2011 QX56

SYSTEM (INTELLIGENT KEY SYSTEM)
DLK-25
< SYSTEM DESCRIPTION >
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When LOCK and UNLOCK signals are sent from the Intelligent Key for more than 2 seconds at the same time,
the hazard and horn reminder mode is changed and hazard warning lamp blinks and horn sounds as per the
following items:
AUTOMATIC BACK DOOR OPEN/CLOSE FUNCTION
When back door button of Intelligent Key is pressed fo r 0.4 second or more, back door open automatically for
detailed description, refer to DLK-31, "
System Description".
LIST OF OPERATION RELATED PARTS
Parts marked with × are the parts related to operation.
KEY REMINDER FUNCTION
KEY REMINDER FUNCTION : System DiagramINFOID:0000000006225847
JMKIA2755GB
Function
Intelligent Key
Door switch
Door lock actuator
Fuel lid lock actuator
Push-button ignition switch
CAN communication system BCM
IPDM E/R
Horn
Combination meter
Hazard warning lamp
Automatic back door control module
Back door lock assembly
Door lock/unlock function ×××× ×
Selective unlock function ×××× ×
Auto door lock function ××××× ×
Hazard and horn reminder function ××××××
Automatic back door open/close function ×××××
JMKIA5084GB
Revision: 2010 May2011 QX56

SYSTEM (INTELLIGENT KEY SYSTEM)
DLK-27
< SYSTEM DESCRIPTION >
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 When the BCM detects that the Intelligent Key is within the outside key antenna detection area. BCM trans-
mits the request signal to the Intelligent Key and check it is near the door.
 Intelligent Key receives the request signal and transmits the key ID signal to the BCM via remote keyless
entry receiver.
 BCM receives the key ID signal and compares it with the registered key ID.
 BCM illuminates lamps that are set, when key ID verification is OK.
TIMER FUNCTION
BCM can operate welcome light function, using the timer function, for 9 days, after key switch is turned OFF.
The timer function resets when the engine is started
*.Operating period of timer function may differ depending
on battery size.
*: Timer function does not stop if another Intelligent Key that has a different key ID is detected within the inte-
rior antenna detection area, when starting the engine.
OPERATION CONDITION
If the following condition are satisfi ed, welcome light function is operated.
OUTSIDE KEY ANTENNA DETECTION AREA
The outside key antenna detection area of door lock/unlock function
is in the range of approximately 80 cm (31.50 in) surrounding the
driver, passenger door handles (1) and back door handle (2). How-
ever, this operating range depends on the ambient conditions.
WELCOME LIGHT FUNCTION SETTING
Welcome light function operation mode can be changed using CONSULT-III
With CONSULT-III
Refer to DLK-41, "
INTELLIGENT KEY : CONSULT-III F unction (BCM - INTELLIGENT KEY)".
Without CONSULT-III
The welcome light function ON/OFF can be s witched by performing the following operation.
1. Turn ignition switch: OFF →ON
2. Press and hold the driver side door request switch for 5 seconds or more within 20 seconds after turning the ignition switch ON.
3. The switching is complete when combination meter buzzer sounds.
WARNING FUNCTION
WARNING FUNCTION : System DescriptionINFOID:0000000006225851
OPERATION DESCRIPTION
The warning function are as per the following items and are given to the user as warning information and
warnings using combinations of Intelligent Key warning buzzer, combination meter buzzer, KEY warning lamp
and information display in combination meter.
 Intelligent Key system malfunction
 OFF position warning
 P position warning
 ACC warning
Function Operation condition
Welcome light function  All door are closed
 All doors is locked
 Ignition switch: OFF position
 Shift position: P position
 Intelligent Key is outside the vehicle
 Timer function is activated
JMKIA5224ZZ
Revision: 2010 May2011 QX56

DLK-28
< SYSTEM DESCRIPTION >
SYSTEM (INTELLIGENT KEY SYSTEM)
 Take away warning
 Door lock operation warning
 Engine start information
 Steering lock information
 Intelligent Key low battery warning
 Key ID warning
 Key ID verification information
OPERATION CONDITION
Once the following condition from below is established, alert or warning is executed.
WARNING METHOD
The following table shows the alarm or warning methods with chime.
Warning/Information functions Operation procedure
Intelligent Key system malfunction When a malfun ction is detected on BCM, “KEY” warning lamp illuminates
OFF position warning For internal
 Ignition switch: ACC position
 Door switch (driver side
): ON (Door is open)
For external OFF position warning (For internal) is in active mode, driver side door is
closed
NOTE:
OFF position (For external) active only when each of the sequence occurs
as below: P position warning
→ ACC warning → OFF position warning (For
internal) → OFF position warning (For internal)
P position warning For internal
 Shift position: Except P position
 Engine is running to stopped (Ignition switch is ON to OFF)
For external Warning is activated when driver door is closed from the open position
while the P position warning (for inside vehicle) is ON
ACC warning  When P position warning is in active mode, shift position changes P po-
sition
 Ignition switch: ACC position
Ta k e a w a y w a r n i n g Door is open to close
 Ignition switch: Except LOCK position
 Door switch: ON to OFF (Door is open to close)
 Intelligent Key cannot be detected inside the vehicle
Door is open  Door switch: ON (Door is open)
 Key ID verification every 5 seconds when registered Intelligent Key can-
not be detected inside the vehicle
Push-button ignition
switch operation  Ignition switch: Except LOCK position
 Press push-button ignition switch
 Intelligent Key cannot be detected inside the vehicle
Door lock operation warning When door lock operation is requested while door lock operating condition
of door request switch or Intelligent Key are not satisfied
Engine start information Ignition switch is ON po-
sition
 Ignition switch: ON position
 Shift position: P position*
 Engine is stopped
Ignition switch is except
ON position  Ignition switch: Except ON position
 Shift position: P position*
 Intelligent Key is inserted in key slot or Intelligent Key can be detected
inside the vehicle
Steering lock information When steering lock cannot be released after ignition switch is turned ON
Intelligent Key low battery warning When Intelligent Key is low battery, BCM is detected after ignition switch is
turned ON
Key ID warning When registered Intelligent Key cannot be detected inside the vehicle after
ignition switch is turned ON
Key ID verification information  When registered Intelligent Key cannot be detected inside the vehicle
 Intelligent Key battery is discharged
 When NATS antenna amp cannot be detected NATS ID
Revision: 2010 May2011 QX56