2011 INFINITI QX56 change time

OPERATIONHAC-35
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONING]
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REAR AUTOMATIC AIR CONDITIONING SYSTEM
REAR AUTOMATIC AIR CONDITIONING SY STEM : Switch Name and Function
INFOID:0000000006275882
FRONT CONTOLLER OPERATION
A/C Display
 Rear air conditioning system state is indicated on the front display.
 When REAR switch is pressed while air conditioning syst em is in the ON position, the front display changes
to state indication display (rear contro l mode) of rear air conditioning system.
Display screen
Controller (Preset Switch)
With ACCS (advanced climate control system)
Temperature control dial
(passenger side)  Selects set temperature within a range between 18.0
°C (60 °F) – 32.0 °C (90 °F) at a rate of 0.5 °C
(1.0 °F) each time the dial is rotated.
- Clockwise rotation: Set temperature increases.
- Counterclockwise rotation: Set temperature decreases.
 When the temperature control dial is turned, DUAL switch indicator turns ON.
NOTE:
When front air conditioning system is in the OFF position, set temperature can be selected only while
front air conditioning system state (when MODE switch is pressed) is indicated on the display.
Upper ventilator switch Turns the upper ventila
tor control (switch indicator) between ON ⇔ OFF each time while front blower
fan is activated.
NOTE:
 When front air conditioning system is in the OFF position and air outlet is DEF position, upper ven- tilator control cannot be activated.
 When front air conditioning system is in the OFF position, upper ventilator control can be selected only while front air conditioning system state (when MODE switch is pressed) is indicated on the
display.
JMIIA0720ZZ
JMIIA0825ZZ
1. AUTO switch 2. Temperature control dial (Driver
side)3. MODE switch
4. REAR switch 5. OFF switch 6. Fan switch
Revision: 2010 May2011 QX56

HAC-38
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONING]
OPERATION
- When air flow is small
- When air flow is large
Controller (Preset Switch)
JMIIA0410ZZ
JMIIA0411ZZ
1. Auto intake switch
Switch name Function
Auto intake switch  Automatic intake control (exhaust gas / outside odor detecting mechanism) mode (switch indicator)
changes between ON ⇔ OFF each time when auto intake switch is pressed while front blower mo-
tor is activated.
 When auto intake switch turns ON, front air conditioning system becomes the following status.
- A/C switch: ON
- Air inlet: Recirculation [After approximately 5 minutes, air inlet is switched to automatic intake con- trol (exhaust gas / outside odor detecting mechanism).]
 When auto intake switch turns ON ⇒ OFF, air inlet becomes the fresh air intake.
NOTE:
 Interlocking condition of A/C switch can be changed. Refer to HAC-70, "
ACCS (ADVANCED CLI-
MATE CONTROL SYSTEM) : Auto Intake Switch Interlocking Movement Change Function".
 Auto intake switch does not turn ON during the following status.
- Air outlet: DEF
- Ambient temperature: −2 °C (28 °F) or less
JMIIA0826ZZ
Revision: 2010 May2011 QX56

INL-8
< SYSTEM DESCRIPTION >
SYSTEM
 The puddle lamp turns ON and OFF by the puddle lamp timer.
 BCM judges the vehicle condition with the following items. It activates the puddle lamp timer.
- Ignition switch status
- Door switch signal (except back door)
- Door lock/unlock signal (remote keyless entry receiver, each door request switch)
- Driver side door lock status
Puddle Lamp ON Operation
BCM activates the puddle lamp timer in any of the following conditions to turn the puddle lamp ON for a period
of time.
 Any door opens excepting back door.
 Any door opens before all doors close excepting back door.
 Ignition switch is turned ON → OFF.
 Door unlock signal by remote keyless entry rece iver or each door request switch is detected.
 Driver side door is locked*.
NOTE:
The timer restarts if new condition is input during the timer operating time.
Puddle Lamp OFF Operation
BCM stops the timer and turns puddle lamp OFF, when any of the following conditions are satisfied.
 The puddle lamp timer operating time is expired.
 The interior room lamp OFF conditions.
 The interior room lamp timer operating time is expired.
PUSH-BUTTON IGNITION SWITCH ILLUMINATION CONTROL
Push-button Ignition Switch Illumination Basic Operation
 BCM controls the ON/OFF status of push-button igni tion switch illumination according to vehicle status.
 BCM provides the push-button ignition switch illumi nation control signal and the ground to turn the push-but-
ton ignition switch illumination ON.
 BCM cuts the ground supply while each illumination (tai l lamp) is ON. BCM switches to the ground control
according to the meter illumination control function. Refer to MWI-16, "
METER ILLUMINATION CONTROL :
System Description".
Heart Beat Operation
BCM repeats brightening and dimming operation of push-button ignition switch illumination when any of the
following conditions are satisfied.
 Welcome light function operates.
 When ignition switch is OFF and any of the following conditions are satisfied.
- Driver side door changes from closed to open
- Driver side door changes from locked to unlocked
- Intelligent Key ID comparison is OK and driver side door changes from open to closed
- ID comparison by Intelligent Key transponder is OK
Illumination ON Operation
When ignition switch is not OFF or tail lamp turns ON, push-button ignition switch illumination turns ON.
Dimming Operation
When tail lamp turns OFF and ignition switch is turned OFF, push-button ignition switch illumination dims to
50% brightness.
Illumination OFF Operation
Push-button ignition switch illumination turns OFF when ignition switch turns OFF and tail lamp turns from ON
to OFF, while push-button ignition switch illumination is in ON status.
When push-button ignition switch illumination is at 50% brightness or in heartbeat status, and any of the fol-
lowing conditions are satisfied, push-butt on ignition switch illumination turns OFF.
 15 seconds after start of heartbeat operation.
 When welcome light function is not operating and any on the following conditions is satisfied.
- Driver side door is closed
- Driver side door is locked
- Intelligent Key ID comparison is NG
- Comparison of Intelligent Key ID by transponder is NG
INTERIOR ROOM LAMP BATTERY SAVER SYSTEM
Revision: 2010 May2011 QX56

SYSTEMINL-9
< SYSTEM DESCRIPTION >
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INTERIOR ROOM LAMP BATTERY SAVER SYSTEM : System DiagramINFOID:0000000006216052
INTERIOR ROOM LAMP BATTERY SA VER SYSTEM : System Description
INFOID:0000000006216053
OUTLINE
 Interior room lamp battery saver is controlled by BCM.
 BCM turns applicable lamps OFF depending on the vehicle condition. This function prevents the battery
from over-discharging if the driver neglects turning OFF the any lamps.
Applicable lamps
 Map lamp
 Personal lamp
 Foot lamp
 Luggage room lamp
 Automatic back door close switch illumination
 Step lamp
 Puddle lamp
 Vanity mirror lamp
INTERIOR ROOM LAMP BATTERY SAVER FUNCTION
 When the ignition switch is turned to a position other than ON, BCM operates the timer for a period of time to
cut the interior room lamp power supply.
 BCM restart the timer when any of the following signals changes while operating the timer.
- Push-button ignition switch status
- Door switch signal (ALL)
- Door lock/unlock signal (remote keyless entry re ceiver, each door request switch, door lock and unlock
switch, door key cylinder switch)
 BCM provides the interior room lamp power supply continuously when the ignition switch position is ON.
 When welcome light function operates.
NOTE:
JMLIA1189GB
Revision: 2010 May2011 QX56

INL-12
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000006368143
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 ea ch 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 defogger 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

INT-10
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. Trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing, or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof / headlining area can often be traced to one of the following items:
1. Sunroof lid, rail, linkage, or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it is important to note t he position the seat is in and the load placed on the seat
when the noise occurs. These conditions should be duplic ated when verifying and isolating the cause of the
noise.
Causes of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of thes e incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move, or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
Revision: 2010 May2011 QX56

IP-10
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. Trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing, or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof / headlining area can often be traced to one of the following items:
1. Sunroof lid, rail, linkage, or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it is important to note t he position the seat is in and the load placed on the seat
when the noise occurs. These conditions should be duplic ated when verifying and isolating the cause of the
noise.
Causes of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of thes e incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move, or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
Revision: 2010 May2011 QX56

MA-4
< PERIODIC MAINTENANCE >
GENERAL MAINTENANCE
PERIODIC MAINTENANCE
GENERAL MAINTENANCE
Explanation of General MaintenanceINFOID:0000000006287728
General maintenance includes those items which shoul d be checked during the normal day-to-day operation
of the vehicle. They are essential if the vehicle is to continue operating properly. The owners can perform
checks and inspections themselves or have their INFINITI dealers do them.
OUTSIDE THE VEHICLE
The maintenance items listed here should be performed fr om time to time, unless otherwise specified.
INSIDE THE VEHICLE
The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, cleaning the vehicle,
etc.
Item Reference page
Tires Check the pressure with a gauge often and always prior to long distance trips.
Adjust the pressure in all tires, including the spare, to the pressure specified.
Check carefully for damage, cuts or excessive wear. WT-69
Wheel nuts
When checking the tires, make sure no nuts are missing, and check for any
loose nuts. Tighten if necessary. —
Tire rotation Tires should be rotated every 12,000km (7,500 miles). If the vehicle is equipped
with different sized tires in the front and rear, tires cannot be rotated. WT-63
Tire Pressure Moni-
toring System (TPMS)
transmitter compo-
nentsReplace the TPMS transmitter grommet seal, valve core and cap when the tires
are replaced due to wear or age.
WT-66
Wheel alignment and
balanceIf the vehicle should pull to either side while driving on a straight and level road,
or if you detect uneven or abnormal tire wear, there may be a need for wheel
alignment. If the steering wheel or seat vibrates at normal highway speeds,
wheel balancing may be needed. FSU-7
RSU-6
Windshield
Clean the windshield on a regular basis. Check the windshield at least every six
months for cracks or other damage. Repair as necessary. —
Windshield wiper
blades Check for cracks or wear if they do not wipe properly. —
Doors and engine
hood Check that all doors and the engine hood operate smoothly as well as the back
door. Also make sure that all latches lock securely. Lubricate if necessary. Make
sure that the secondary latch keeps the hood from opening when the primary
latch is released.
When driving in areas using road salt or other corrosive materials, check lubri-
cation frequently. MA-34
Lamps
Make sure that the headlamps, stop lamps, tail lamps, turn signal lamps, and
other lamps are all operating properly and installed securely. Also check head-
lamp aim. Clean the headlamps on a regular basis. —
Item
Reference page
Warning lamps and
chimes Make sure that all warning lamps and chimes are operating properly. —
Windshield wiper and
washer Check that the wipers and washer operate properly and that the wipers do not
streak.
—
Windshield defroster Check that the air comes out of the defroster outlets properly and in sufficient
quantity when operating the heater or air conditioner. —
Steering wheel Check that it has the specified play. Check for changes in the steering condi-
tion, such as excessive play, hard steering or strange noises.
Free play: Less than 35 mm (1.38 in) —
Revision: 2010 May2011 QX56