display INFINITI QX56 2011 Factory Service Manual

DIAGNOSIS SYSTEM (BCM)EXL-25
< SYSTEM DESCRIPTION > [XENON TYPE]
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ACTIVE TEST
*: Only models for Canada display this item.
FLASHER
FLASHER : CONSULT-III F unction (BCM - FLASHER)INFOID:0000000006213912
WORK SUPPORT
DOOR SW-DR
[On/Off] The switch status input from front door switch (driver side)
DOOR SW-AS
[On/Off] The switch status input from front door switch (passenger side)
DOOR SW-RR
[On/Off] The switch status input from rear door switch RH
DOOR SW- RL
[On/Off] The switch status input from rear door switch LH
DOOR SW-BK
[On/Off] The switch status input from back door switch
OPTICAL SENSOR
[On/Off] The sensor status input from optical sensor
OPTI SEN (DTCT)
[V] The value of outside brightness voltage input from the optical sensor
OPTI SEN (FILT)
[V] The value of outside brightness voltage filtered by BCM
Monitor item
[Unit] Description
Test item Operation Description
TAIL LAMP On
Transmits the position light request signal to IPDM E/R via CAN commu-
nication to turn the tail lamp ON
Off Stops the tail lamp request signal transmission
HEAD LAMP Hi
Transmits the high beam request signal via CAN communication to turn
the headlamp (HI)
Lo Transmits the low beam request signal via CAN communication to turn
the headlamp (LO)
Off Stops the high & low beam request signal transmission
FR FOG LAMP On
Transmits the front fog lights request signal to IPDM E/R via CAN com-
munication to turn the front fog lamp ON
Off Stops the front light request signal transmission
RR FOG LAMP On
NOTE:
This item is indicated, but can not tested
Off
DAYTIME RUNNING LIGHT* On
Transmits the front fog lights request signal to IPDM E/R via CAN com-
munication to turn the front fog lamp ON (daytime running light system)
Off Stops the front light request signal transmission (daytime running light
system)
ILL DIM SIGNAL On Transmits the dimmer signal to combination meter via CAN communi-
cation and dims combination meter
 Transmits the dimmer signal to AV control unit and dims display
Off Stops the dimmer signal transmission
Revision: 2010 May2011 QX56

DIAGNOSIS SYSTEM (IPDM E/R)EXL-29
< SYSTEM DESCRIPTION > [XENON TYPE]
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CONSULT-III Function (IPDM E/R)INFOID:0000000006368067
APPLICATION ITEM
CONSULT-III performs the following functi ons via CAN communication with IPDM E/R.
SELF DIAGNOSTIC RESULT
Refer to PCS-22, "DTCIndex".
DATA MONITOR
Monitor item
Oil pressure warning lamp does not operate Perform auto active test.
Does the oil pressure warning
lamp blink?YES
 Harness or connector be-
tween IPDM E/R and oil
pressure switch
 Oil pressure switch
 IPDM E/R
NO  CAN communication signal
between IPDM E/R and
BCM
 CAN communication signal
between BCM and combi-
nation meter
 Combination meter
Symptom Inspection contents Possible cause
Diagnosis mode Description
Ecu Identification Allows confirmation of IPDM E/R part number.
Self Diagnostic Result Displays the diagnosis results judged by IPDM E/R.
Data Monitor Displays the real-time input/output data from IPDM E/R input/output data.
Active Test IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor The results of transmit/receive diagnosis of CAN communication can be read.
Monitor Item [Unit] MAIN SIG-
NALS Description
RAD FAN REQ
[1/2/3/4] ×Displays the value of the cooling fan speed request signal received from ECM via
CAN communication.
AC COMP REQ
[Off/On] ×Displays the status of the A/C compressor request signal received from ECM via
CAN communication.
TAIL&CLR REQ
[Off/On] ×
Displays the status of the position light request signal received from BCM via CAN
communication.
HL LO REQ
[Off/On] ×Displays the status of the low beam request signal received from BCM via CAN
communication.
HL HI REQ
[Off/On] ×Displays the status of the high beam request signal received from BCM via CAN
communication.
FR FOG REQ
[Off/On] ×Displays the status of the front fog light request signal received from BCM via
CAN communication.
FR WIP REQ
[Stop/1LOW/Low/Hi] ×
Displays the status of the front wiper request signal received from BCM via CAN
communication.
WIP AUTO STOP
[STOP P/ACT P] ×
Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[Off/BLOCK] ×
Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
IGN RLY1 -REQ
[Off/On] Displays the status of the ignition switch ON signal received from BCM via CAN
communication.
IGN RLY
[Off/On] ×
Displays the status of the ignition relay judged by IPDM E/R.
Revision: 2010 May2011 QX56

EXL-30
< SYSTEM DESCRIPTION >[XENON TYPE]
DIAGNOSIS SYSTEM (IPDM E/R)
ACTIVE TEST
Te s t i t e m
PUSH SW
[Off/On]Displays the status of the push-button ignition switch judged by IPDM E/R.
INTER/NP SW
[Off/On] Displays the status of the shift position judged by IPDM E/R.
ST RLY CONT
[Off/On] Displays the status of the starter relay status signal received from BCM via CAN
communication.
IHBT RLY -REQ
[Off/On] Displays the status of the starter control relay signal received from BCM via CAN
communication.
ST/INHI RLY
[Off/ ST ON/INHI ON/UNKWN] Displays the status of the starter relay and starter control relay judged by IPDM
E/R.
DETENT SW
[Off/On] Displays the status of the A/T shift selector (detention switch) judged by IPDM E/
R.
S/L RLY -REQ
[Off/On] Displays the status of the steering lock relay signal received from BCM via CAN
communication.
S/L STATE
[LOCK/UNLK/UNKWN] Displays the status of the steering lock judged by IPDM E/R.
OIL P SW
[Open/Close] Displays the status of the oil pressure switch judged by IPDM E/R.
HOOD SW
[Off/On] Displays the status of the hood switch judged by IPDM E/R.
HL WASHER REQ
[Off/On] Displays the status of the headlamp washer request signal received from BCM via
CAN communication.
THFT HRN REQ
[Off/On] Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
HORN CHIRP
[Off/On] Displays the status of the horn reminder signal received from BCM via CAN com-
munication.
Monitor Item
[Unit] MAIN SIG-
NALS Description
Test item Operation Description
CORNERING LAMP LH
NOTE:
This item is indicated, but cannot be tested.
RH
HORN On Operates horn relay for 20 ms.
REAR DEFOGGER Off OFF
On Operates the rear window defogger relay.
FRONT WIPER Off OFF
Lo Operates the front wiper relay.
Hi Operates the front wiper relay and front wiper high relay.
MOTOR FAN* 1OFF
2 Transmits 50% pulse duty signal (PWM signal) to the cooling fan control module.
3 Transmits 75% pulse duty signal (PWM signal) to the cooling fan control module.
4
Transmits 100% pulse duty signal (PWM signal) to the cooling fan control mod-
ule.
HEAD LAMP WASHER On Operates the headlamp washer relay for 1 second.
Revision: 2010 May2011 QX56

EXL-32
< SYSTEM DESCRIPTION >[XENON TYPE]
DIAGNOSIS SYSTEM (AFS)
DIAGNOSIS SYSTEM (AFS)
CONSULT-III Function (ADAPTIVE LIGHT)INFOID:0000000006213915
APPLICATION ITEM
WORK SUPPORT
*: Adjusts the steering angle sensor neutral position on ABS actuator and electrical unit (control unit) side. Refer to
BRC-64, "Work Pro-
cedure".
DATA MONITOR
*: The swivel angle "0°" (feedback value) of the swivel position sensor signal may differ from the swivel angle "0 °" of the swivel motor
(AFS control unit command value). This causes that the swivel motor initializes the value based on the step number from the sto pper.
ACTIVE TEST
Diagnostic mode Description
Ecu Identification Allows confirmation of AFS control unit part number.
Self Diagnostic Result Displays the diagnosis results judged by AFS control unit.
Work support Sets each sensor.
Data monitor Indicates AFS control unit input data in real time.
Active test Provides the drive signal to the load. Checks operation.
Service item Description
ST ANG SEN ADJUSTMENT
*—
LEVELIZER ADJUSTMENT Adjusts the height sensor signal output value (AFS control unit recognized) in the un-
loaded vehicle condition.
Monitor item
[Unit] Description
STR ANGLS SIG
[deg] The steering angle value judged by the steering angle sensor signal received from
the steering angle sensor via CAN communication
VHCL SPD
[km/h] The vehicle speed signal value from the combination meter via CAN communication
SLCT LVR POSI
[P/R/N/D/M/FF] The selector lever status judged by the position indicator signal received from TCM
via CAN communication
HEAD LAMP
[On/Off] The headlamp On/Off status judged by the low beam headlamp (ON) signal received
from IPDM E/R via
CAN communication
AFS SW
[On/Off] The AFS On/Off status judged by AFS control unit
HI SEN OTP RR
[V] The rear height sensor signal voltage value input from the rear height sensor
HI SEN OTP FR
[V] The front height sensor signal voltage value input from the front height sensor
LEV ACTR VLTG
[%] The ratio value to the battery voltage generated by the levelizer activation signal con-
trol value judged by AFS control unit
SWVL SEN RH
*
[deg] The head lamp swivel angle value judged by AFS control unit received from the swiv-
el position sensor signal input from the swivel actuator
SWVL SEN LH
*
[deg]
SWVL ANGLE RH
*
[deg]
The swivel angle command value to the swivel motor judged by AFS control unit
SWVL ANGLE LH
*
[deg]
Revision: 2010 May2011 QX56

AFS CONTROL UNITEXL-39
< ECU DIAGNOSIS INFORMATION > [XENON TYPE]
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DTC Inspection Priority ChartINFOID:0000000006213919
If some DTCs are displayed at the same time, per form inspections one by one based on the following priority
chart.
NOTE:
 If DTC U1000 is displayed with other DTC, fi rst perform the trouble diagnosis for DTC U1000.
 If DTC U1010 is displayed with other DTC, fi rst perform the trouble diagnosis for DTC U1010.
DTC IndexINFOID:0000000006213920
×: Applicable
Priority Detected items (DTC)
1  U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
2  B2519: LEVELIZER CALIB
 B2521: ECU CIRC
 C0428: ST ANG SEN CALIB
3  B2503: SWIVEL ACTUATOR [RH]
 B2504: SWIVEL ACTUATOR [LH]
 B2513: HI SEN UNUSUAL [FR]
 B2514: HI SEN UNUSUAL [RR]
 B2516: SHIFT SIG [P, R]
 B2517: VEHICLE SPEED SIG
 C0126: ST ANG SEN SIG
CONSULT display Fail-safe
AFS OFF indicator
lamp Reference
U1000: CAN COMM CIRCUIT ××EXL-82
U1010: CONTROL UNIT (CAN) ××EXL-83
B2503: SWIVEL ACTUATOR [RH] ××EXL-63
B2504: SWIVEL ACTUATOR [LH] ××EXL-63
B2513: HI SEN UNUSUAL [FR] ×EXL-68
B2514: HI SEN UNUSUAL [RR] ×EXL-71
B2516: SHIFT SIG [P, R] ××EXL-74
B2517: VEHICLE SPEED SIG ××EXL-75
B2519: LEVELIZER CALIB ×EXL-76
B2521: ECU CIRC ××EXL-77
C0126: ST ANG SEN SIG ××EXL-80
C0428: ST ANGLE SEN CALIB ××EXL-81
Revision: 2010 May2011 QX56

EXL-82
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006213948
CAN (Controller Area Network) is the serial transmissi
on for real time application. CAN is the multiplex com-
munication for the vehicle with superior data transmi ssion speed and error detection ability. Many electronic
control units are equipped on the vehicle. These control units do not operate individually, but associates with
other control units by sharing information. In CA N communication, each control unit is connected with two
communication lines (CAN-H and CAN-L). Much inform ation is transmitted with fewer communication lines
than before. Each control unit transmits/rec eives data and reads the necessary data only.
CAN Communication Signal Chart. Refer to LAN-27, "
CAN COMMUNICATION SYSTEM : CAN System Spec-
ification Chart".
DTC LogicINFOID:0000000006213949
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000006213950
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result”.
Is
“CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
DTC No. Trouble diagnosis name DTC detection condition Possible causes
U1000 CAN communication circuit When AFS control unit does not trans-
mit/receive CAN communication signal
continuously for 2 seconds or more
CAN communication system
Revision: 2010 May2011 QX56

WHEEL ALIGNMENTFSU-7
< PERIODIC MAINTENANCE >
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WHEEL ALIGNMENT
InspectionINFOID:0000000006225640
DESCRIPTION
Measure wheel alignment under unladen conditions.
NOTE:
“Unladen conditions” means that fuel, engine coolant, and lubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.
PRELIMINARY CHECK
Check the following:
 Tires for improper air pressure and wear
 Road wheels for runout: Refer to WT-64, "
Inspection".
 Wheel bearing axial end play: Refer to FA X - 7 , "
Inspection" (2WD), FAX-16, "Inspection" (4WD).
 Lower link and upper link ball joint axial end play: Refer to FSU-15, "
Inspection" and FSU-18, "Inspection".
 Shock absorber operation.
 Each mounting part of axle and suspension for looseness and deformation
 Lower link for cracks, deformation and other damage
 Vehicle height (posture)
GENERAL INFORMATION AND RECOMMENDATIONS
 A four-wheel thrust alignment should be performed.
- This type of alignment is recomm ended for any NISSAN/INFINITI vehicle.
- The four-wheel “thrust” process helps ensure that t he vehicle is properly aligned and the steering wheel is
centered.
- The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
- The rack should be checked to ensure that it is level.
 Make sure the machine is properly calibrated.
- Your alignment equipment should be regularly ca librated in order to give correct information.
- Check with the manufacturer of your specific equi pment for their recommended Service/Calibration Sched-
ule.
ALIGNMENT PROCESS
IMPORTANT:
Use only the alignment specificati ons listed in this Service Manual.
 When displaying the alignment settings, many alignment machines use “indicators”: (Green/red, plus or
minus, Go/No Go). Never use these indicators.
- The alignment specifications programmed into your machine that operate these indicators may not be cor-
rect.
- This may result in an ERROR.
 Some newer alignment machines are equipped with an optional “Rolling Compensation” method to “com-
pensate” the sensors (alignment targets or head units). Never use this “Rolling Compensation” method.
- Use the “Jacking Compensation Method”. After installi ng the alignment targets or head units, raise the vehi-
cle and rotate the wheels 1/2 turn both ways.
- See Instructions in the alignment machine you're using for more information on this.
AdjustmentINFOID:0000000006225641
CAMBER, CASTER
1. Adjust with the front/rear side adjusting bolts (1) on the lower link
(2).
2. See the following table for the amount of cam bolt scale move- ment and the variation of camber and caster.
CAUTION:
Align the adjusting bolt cutout with the stamp of lower link
bracket.
: Vehicle front
JPEIA0235ZZ
Revision: 2010 May2011 QX56

GI-16
< HOW TO USE THIS MANUAL >
ABBREVIATIONS
I
K
L
M
N
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ABBREVIATION DESCRIPTIONI/M Inspection and maintenanceIA Intake air
IAC Idle air control IAT Intake air temperature
IBA Intelligent brake assist IC Ignition control
ICC Intelligent cruise control
ICM Ignition control module
IPDM E/R Intelligent power distribution module engine room ISC Idle speed controlISS Input shaft speed
ABBREVIATION DESCRIPTION KS Knock sensor
ABBREVIATION DESCRIPTION LCD Liquid crystal display
LCU Local control unitLDP Lane departure prevention
LDW Lane departure warning LED Light emitting diode LH Left-hand
LIN Local interconnect network
ABBREVIATION DESCRIPTION M/T Manual transaxle/transmission
MAF Mass airflow
MAP Manifold absolute pressure MI Malfunction indicator
MIL Malfunction indicator lamp
ABBREVIATION DESCRIPTION NOX Nitrogen oxides
ABBREVIATION DESCRIPTION O2 Oxygen
O2S Oxygen sensor
OBD On board diagnostic OC Oxidation catalytic converter
OD OverdriveOL Open loop
OSS Output shaft speed
Revision: 2010 May2011 QX56

GI-48
< BASIC INSPECTION >
CONSULT-III/GST CHECKING SYSTEM
CONSULT-III/GST CHECKING SYSTEM
DescriptionINFOID:0000000006280856
 When CONSULT-III/GST is connected with a data link connector
(A) equipped on the vehicle side, it will communicate with the con-
trol unit equipped in the vehicle and then enable various kinds of
diagnostic tests.
 Refer to “CONSULT-III Software Operation Manual” for more infor- mation.
CONSULT-III Function a nd System Application*1INFOID:0000000006280857
1 : Instrument lower panel LH
JPAIA0769ZZ
Diagnostic test
mode Function
ENGINE
TRANSMISSION AIR BAG
METER/M&A
AUTO BACK DOOR BCM
AUTO DRIVE POS. ABS
IPDM E/R
ALL MODE AWD/4WD MULTI AV
ICC/ADAS SONAR
AIR PRESSURE MONITOR AFS (ADAPTIVE LIGHT)
PRECRASH SEAT BELT HVAC
LASER
LANE CAMERA
ACCELE PEDAL ACT
E–SUS
SIDE RADAR LEFT
SIDE RADAR RIGHT CAN GATEWAY
Work Support This mode
enables a
technician to
adjust some
devices fast-
er and more
accurately.xx - - - xxx - xxxxxx - xxx - xxx -
Self Diagnostic
Results Retrieve DTC
from ECU
and display
diagnostic
items.
xxxxxxxxxxxxxxxxxxxxxxxx
Data Monitor Monitor the
input/output
signal of the
control unit in
real time.xx - xxxxxxxxxxxxxxxxxxxx -
CAN Diagnosis This mode
displays a
network diag-
nosis result
about CAN
by a diagram.xxxxxxxxxxxx -xxxxxxxxxxx
CAN Diagnosis
Support Moni-
tor It monitors
the status of
CAN commu-
nication.
xx - xxxxxxxxx -xxxxxxxxxxx
Revision: 2010 May2011 QX56

CONSULT-III/GST CHECKING SYSTEMGI-49
< BASIC INSPECTION >
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x: Applicable
*1: If GST application is equipped , functions in accordance with SAE J1 979 and ISO 15031-5 can be used.
Active Test
Send the
drive signal
from CON-
SULT-III to
the actuator.
The opera-
tion check
can be per-
formed.x - - - - xxxx - - xxxx - x - - xxxx -
DTC & SRT
confirmation The status of
system moni-
toring tests
and the self-
diagnosis
status/result
can be con-
firmed.
xx----------------------
ECU Identifica-
tion Display the
ECU identifi-
cation num-
ber (part
number etc.)
of the select-
ed system.
xxx - xxxxxxxxxxxxxxxxxxxx
Function Test This mode
can show re-
sults of self-
diagnosis of
ECU with ei-
ther “OK” or
“NG”. For en-
gine, more
practical
tests regard-
ing sensors/
switches and/
or actuators
are available.xxx----x----------------
Configuration Function to
READ/
WRITE vehi-
cle configura-
tion.-----x----x------------x
Special
Function Other results
or histories,
etc. that are
recorded in
ECU are dis-
played.
-xxx--------------------
Diagnostic test
mode Function
ENGINE
TRANSMISSION AIR BAG
METER/M&A
AUTO BACK DOOR
BCM
AUTO DRIVE POS. ABS
IPDM E/R
ALL MODE AWD/4WD
MULTI AV
ICC/ADAS SONAR
AIR PRESSURE MONITOR AFS (ADAPTIVE LIGHT)
PRECRASH SEAT BELT HVAC
LASER
LANE CAMERA
ACCELE PEDAL ACT E–SUS
SIDE RADAR LEFT
SIDE RADAR RIGHT CAN GATEWAY
Revision: 2010 May2011 QX56