2011 INFINITI QX56 warning light

EXL-1
DRIVER CONTROLS
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SECTION EXL
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CONTENTS
EXTERIOR LIGHTING SYSTEM
XENON TYPE
PRECAUTION ................ ...............................
5
PRECAUTIONS .............................................. .....5
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
5
SYSTEM DESCRIPTION ..............................6
COMPONENT PARTS ................................... .....6
EXTERIOR LIGHTING SYSTEM .................................6
EXTERIOR LIGHTING SYSTEM : Component
Parts Location ..................................................... ......
6
EXTERIOR LIGHTING SYSTEM :
Component Description ............................................
7
FRONT COMBINATION LAMP ............................. ......8
FRONT COMBINATION LAMP : Xenon Head-
lamp ..........................................................................
8
FRONT COMBINATION LAMP : HID control unit ......9
FRONT COMBINATION LAMP : High Beam Sole-
noid ...........................................................................
9
FRONT COMBINATION LAMP : Aiming Motor ........9
FRONT COMBINATION LAMP : Swivel Actuator ......9
SYSTEM .............................................................10
HEADLAMP SYSTEM ...............................................10
HEADLAMP SYSTEM : Syst em Diagram ...............10
HEADLAMP SYSTEM : System Description ....... ....10
HEADLAMP SYSTEM : Fail-safe ............................10
AUTO LIGHT SYSTEM ..... ........................................11
AUTO LIGHT SYSTEM : System Diagram ......... ....11
AUTO LIGHT SYSTEM : System Description (For
CANADA) ................................................................
11
AUTO LIGHT SYSTEM : System Description (Ex-
cept for CANADA) ...................................................
12
DAYTIME RUNNING LIGHT SYSTEM ......................14
DAYTIME RUNNING LIGH T SYSTEM : System
Diagram ............................................................... ....
14
DAYTIME RUNNING LIGHT SYSTEM : System
Description ........................................................... ....
14
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM ....14
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
: System Diagram ................................................ ....
15
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
: System Description ................................................
15
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
: Fail-Safe ................................................................
17
HEADLAMP AIMING CONTROL (MANUAL) ...........17
HEADLAMP AIMING CO NTROL (MANUAL) :
System Description .............................................. ....
18
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM .....................................................................
18
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM : System Diagram ................................ ....
18
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM : System Description ................................
18
PARKING, LICENSE PLATE, SIDE MARKER AND
TAIL LAMP SYSTEM ............................................. ....
18
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMP SYSTEM : System Diagram ........
18
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMP SYSTEM : System Description ....
19
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMP SYSTEM : Fail-safe .....................
19
FRONT FOG LAMP SYSTEM ............................... ....19
FRONT FOG LAMP SYSTEM : System Diagram ....20
FRONT FOG LAMP SYSTEM : System Descrip-
tion ....................................................................... ....
20
FRONT FOG LAMP SYSTEM : Fail-Safe ...............20
EXTERIOR LAMP BATTERY SAVER SYSTEM ... ....20
EXTERIOR LAMP BATTERY SAVER SYSTEM :
System Diagram ......................................................
20
Revision: 2010 May2011 QX56

EXL-8
< SYSTEM DESCRIPTION >[XENON TYPE]
COMPONENT PARTS
*1: With AFS system models
*
2: With headlamp aiming control system (manual) models
FRONT COMBINATION LAMP
FRONT COMBINATION LAMP : Xenon HeadlampINFOID:0000000006213889
OUTLINE
 The lamp light source is by the arch discharge by
applying high voltage into the xenon gas-filled bulb instead
of the halogen bulb filament.
 Sight becomes more natural and brighter because the amount of light are gained adequately and the color of
light is sunshine-like white.
 The xenon bulb drops the amount of light, repeats blinking, and illuminates in red if the bulb reaches the ser-
vice life.
ILLUMINATION PRINCIPLE
1. Discharging starts in high voltage pulse between bulb elec- trodes.
2. Xenon gas is activated by curr ent between electrodes. Pale light
is emitted.
3. The luminous tube (bulb) temperature elevates. Evaporated halide is activated by discharge. The color of light changes into
white.
NOTE:
 Brightness and the color of light may change slightly immediately after the headlamp turned ON until the xenon bulb becomes sta-
ble. This is not malfunction.
 Illumination time lag may occur between right and left. This is not
malfunction.
PRECAUTIONS FOR TROUBLE DIAGNOSIS
Representative malfunction examples are; "Light does not turn ON", "Light blinks", and "Brightness is inade-
quate." The cause often be the xenon bulb. Such malf unctions, however, are occurred occasionally by HID
control unit malfunction or lamp case malfunction. S pecify the malfunctioning part with diagnosis procedure.
WARNING:
 Never touch the harness, HID control unit, the inside and metal part of lamp when turning the head-
lamp ON or operating the lighting switch.
 Never work with wet hands.
CAUTION:
 Never perform HID control unit circuit diagnosis with a circuit tester or an equivalent.
 Temporarily install the headlamps on the vehicle. Co nnect the battery to the connector (vehicle side)
when checking ON/OFF status.
 Disconnect the battery negative terminal before di sconnecting the lamp socket connector or the har-
ness connector.
 Check for fusing of the fusible link(s), open around connector, short, disconnection if the symptom
is caused by electric error.
NOTE:
 Turn the switch OFF once before turni ng ON, if the ON/OFF is inoperative.
 The xenon bulb drops the amount of light, repeats blinking, and illuminates in red if the bulb reaches the ser-
vice life.
Steering angle sensor*1Transmits steering angle sensor signal to AFS control unit. (via CAN communication)
Combination switch
(Lighting & turn signal switch) Refer to
BCS-7, "
COMBINATION SWITCH READING SYSTEM : System Descrip-
tion".
Door switch Inputs the door switch signal to BCM.
AFS switch*
1 Inputs the AFS switch signal to AFS control unit.
 AFS switch is integrated in triple switch.
Headlamp aiming switch*
2Outputs the aiming motor drive signal to aiming motor.
Hazard switch Inputs the hazard switch signal to BCM. Part Description
JPLIA0421GB
Revision: 2010 May2011 QX56

EXL-18
< SYSTEM DESCRIPTION >[XENON TYPE]
SYSTEM
HEADLAMP AIMING CONTROL (MA NUAL) : System Description
INFOID:0000000006216751
The headlamp levelizer adjusts the headlamp light axis upward and downward with the aiming motor inte-
grated in the front combination lamp.
TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM
TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM : System Diagram
INFOID:0000000006213901
TURN SIGNAL AND HAZARD WARNING LA MP SYSTEM : System Description
INFOID:0000000006213902
OUTLINE
Turn signal and the hazard warning lamp is controlled by combination switch reading function, flasher control
function and auto hazard function of BCM.
TURN SIGNAL LAMP OPERATION
 BCM detects the combination switch conditi on by the combination switch reading function.
 BCM supplies voltage to the right (left) turn signal la mp circuit when the ignition switch is turned ON and the
turn signal switch is in the right (left) position. BCM blinks the turn signal lamp.
HAZARD WARNING LAMP OPERATION
BCM supplies voltage to both turn signal lamp circuit when the hazard switch is turned ON. BCM blinks the
hazard warning lamp.
TURN SIGNAL INDICATOR LAMP AND TURN SIGNAL SOUND OPERATION
 BCM transmits the turn indicator signal to the comb ination meter via CAN communication while the turn sig-
nal lamp and the hazard warning lamp operating.
 Combination meter outputs the turn signal sound with the integrated buzzer while blinking the turn signal
indicator lamp according to the turn indicator signal.
HIGH FLASHER OPERATION
 BCM detects the turn signal lamp ci rcuit status from the current value.
 BCM increases the turn signal lamp blinking speed if the bulb or harness open is detected with the turn sig-
nal lamp operating.
NOTE:
The blinking speed is normal while operating the hazard warning lamp.
PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMP SYSTEM
PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMP SYSTEM : System Di-
JPLIA0180GB
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

EXTERIOR LIGHTING SYSTEM SYMPTOMSEXL-115
< SYMPTOM DIAGNOSIS > [XENON TYPE]
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Turn signal indicator lamp
does not blink.
(Turn signal i lamp is nor-
mal.) One side Combination meter —
Both sides
(Always)
 Turn signal indicator lamp sig-
nal
-BCM
 Combination meter  Combination meter
Data monitor “TURN IND”
 BCM (FLASHER) Active test “FLASHER”
Both sides
(Only when activating
hazard warn ing lamp
with the ignition switch
OFF)  Combination meter power sup-
ply and ground circuit
 Combination meter Combination meter
Power supply and ground circuit
Refer to
MWI-64, "
COMBINATION
METER : Diagnosis Procedure".
 Hazard warning lamp does not activate.
 Hazard warning lamp continues activating.
(Turn signal is normal.)  Hazard switch
 Harness between hazard
switch and BCM
BCM Hazard switch
Refer to
EXL-105, "
Component
Function Check".
AFS control does not activate.  Harness between AFS control
unit and AFS switch.
 AFS control unit AFS switch
Refer to
EXL-107, "
Component
Function Check".
Headlamp auto aiming does not activate.
(AFS is normal.)  Harness between AFS control
unit and aiming motor
 Front combination lamp (Aiming motor)
 AFS control unit Headlamp levelizer circuit
Refer to
EXL-91, "
Component
Function Check".
AFS OFF indicator lamp is not turned ON.  AFS OFF indicator lamp signal
- Combination meter
- AFS control unit
 Combination meterCombination meter
Data monitor “AFS OFF IND”
Symptom Possible cause Inspection item
Revision: 2010 May2011 QX56

GI-16
< HOW TO USE THIS MANUAL >
ABBREVIATIONS
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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

REFRIGERANTHA-19
< BASIC INSPECTION >
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Never look directly into UV lamp light source.
NOTE:
 For continuous operating time of UV lamp, fo llow the manufacturer operating instructions.
 Illuminate piping joints from different angles us ing UV lamp and check that there is no leakage.
 Use a mirror in area that is difficult to see to check refrigerant leakage.
 Refrigerant leakage from evaporator can be detected by soaking cotton swab or a similar material with
drain hose water and illuminating it using UV lamp.
 Dust, dirt, and packing materials adhesive used for condenser, evaporator, and other locations may flu- oresce. Be careful not to misidentify leakage.
5. Repair or replace parts where refrigerant leak age occurs and wipe off fluorescent leak detection dye.
NOTE:
Completely wipe off fluorescent leak detection dy e from gaps between parts, screw threads, and others
using a cotton swab or similar materials.
6. Use a UV lamp to check that no fluorescent leak detection dye remains after finishing work. WARNING:
Never look directly into UV lamp light source.
NOTE:
 For continuous operating time of UV lamp, fo llow the manufacturer operating instructions.
 Dust, dirt, and packing materials adhesive used for condenser, evaporator, and other locations may flu-
oresce. Be careful not to misidentify leakage.
CHECK REFRIGERANT LEAKAGE USIN G ELECTRICAL LEAK DETECTOR
WARNING:
Never check refrigerant leakage while the engine is running.
CAUTION:
Be careful of the following items so that in accurate checks or misidentifications are avoided.
 Never allow refrigerant vapor, shop chemical vapors, cigarette smoke, or others around the vehicle.
 Always check refrigerant leakage in a low air flow environment so that refrigerant may not disperse
when leakage occurs.
1. Stop the engine.
2. Connect recovery/recycling/recharging equipment or manifold gauge set to A/C service valve.
3. Check that A/C refrigerant pressure is 345 kPa (3.52 kg/cm
2, 50 psi) or more when temperature is 16 °C
(61 °F) or more. When pressure is lower than the spec ified value, recycle refrigerant completely and fill
refrigerant to the specified level.
NOTE:
Leakages may not be detected if A/C refri gerant pressure is 345 kPa (3.52 kg/cm
2, 50 psi) or less when
temperature is less than 16 °C (61 °F).
4. Clean area where refrigerant leakage check is per formed, and check refrigerant leakage along all sur-
faces of pipe connections and A/C system com ponents using electrical leak detector probe.
CAUTION:
 Continue checking when a leakage is found. Always continue and complete checking along all
pipe connections and A/C system co mponents for additional leakage.
 When a leakage is detected, clean leakage area using compressed air and check again.
 When checking leakage of cooling unit inside, al ways clean inside of drain hose so that the
probe surface may not be exposed to water or dirt.
NOTE:
 Always check leakage starting from high-pressure side and continue to low-pressure side.
 When checking leakage of cooling unit inside, operate blower fan motor for 15 minutes or more at the maximum fan speed while the engine is stopped, and then insert electrical leak detector probe into drain
hose and hold for 10 minutes or more.
 When disconnecting shut-off valve that is connected to A/C service valve, always evacuate remaining
refrigerant so that misidentification can be avoided.
5. Repair or replace parts where refrigerant leak age is detected. (Leakage is detected but leakage area is
unknown. GO TO 6.)
6. Start the engine and set A/C control in the following conditions.  A/C switch ON
 Air flow: VENT (ventilation)
 Intake door position: Recirculation
Revision: 2010 May2011 QX56

LAN-30
< SYSTEM DESCRIPTION >[CAN]
SYSTEM
P range signal T R R
R range signal T R R
Shift position signal R R T R R R R R
Tow mode indicator lamp
signalTR
Pre-roll over signal T R
Pre-tensioner operation
signal TR
AFS OFF indicator lamp
signal TR
A/C switch operation signal T R
Rear window defogger
switch signal TR
System selection signal T R
System setting signal TR R
RT
RT
Automatic back door re-
quest signal TR
Back door lock status signal T R
Buzzer output signal TR
RT
Buzzer request signal TR
RT
Dimmer signal T R R
Door switch signal T R R R R
Door unlock signal T R
Front fog light request sig-
nal TR
Front wiper request signal T R R
Handle position signal T R
Headlamp washer request
signal TR
High beam request signal T R R
Horn reminder signal T R
Ignition switch ON signal TRRR
RT
Ignition switch signal T R
Interlock/PNP switch signal TR
RT
Key ID signal T R
Key switch signal T R
Key warning lamp signal T R
Low beam request signal T R Signal name
ECM
4WD
ABS
TCM
A-BAG
AFSAV
BCM
CGW
HVAC
M&A
STRG
TPMS
IPDM-E ADP
PSB
E-SUS ICC
PWBD
Revision: 2010 May2011 QX56