2011 INFINITI QX56 tire pressure

LAN
TPMS BRANCH LINE CIRCUITLAN-189
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 3)]
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TPMS BRANCH
LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256347
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the terminals and connectors of the low ti re pressure warning control unit for damage, bend and
loose connection (unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of low tire pressure warning control unit.
2. Check the resistance between the low tire pressure warning control unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the low tire pressure warning control unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the lo w tire pressure warning control unit. Refer to WT-51,
"Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the low tire pressure warning control unit. Refer to WT-65, "Removal and
Installation".
YES (Past error)>>Error was detected in the low tire pressure warning control unit branch line.
NO >> Repair the power supply and the ground circuit.
Low tire pressure warning control unit harness connector Resistance (Ω)
Connector No. Terminal No.
M96 2 1 Approx. 54 – 66
Revision: 2010 May2011 QX56

LAN-216
< DTC/CIRCUIT DIAGNOSIS >[CAN SYSTEM (TYPE 4)]
TPMS BRANCH LINE CIRCUIT
TPMS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256387
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the low tire pressure warning control unit for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of low tire pressure warning control unit.
2. Check the resistance between the low tire pressu re warning control unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the low tire pressure warning control unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the lo w tire pressure warning control unit. Refer to WT-51,
"Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the low tire pressure warning control unit. Refer to WT-65, "Removal and
Installation".
YES (Past error)>>Error was detected in the low tire pressure warning control unit branch line.
NO >> Repair the power supply and the ground circuit.
Low tire pressure warning control unit harness connector Resistance (Ω)
Connector No. Terminal No.
M96 2 1 Approx. 54 – 66
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

MWI
SYSTEMMWI-13
< SYSTEM DESCRIPTION >
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SPEEDOMETER
SPEEDOMETER : System DiagramINFOID:0000000006221696
SPEEDOMETER : System DescriptionINFOID:0000000006221697
 The ABS actuator and electric unit (control unit) conv erts the rectangular wave signal provided by the wheel
sensor to a vehicle speed signal and transmits it to the combination meter via CAN communication.
 The combination meter indicates the vehicle speed to the speedometer according to the vehicle speed sig-
nal received via CAN communication.
TACHOMETER
Warning lamp/indicator lamp ABS warning lamp
The lamp turns ON by suspending communication.
VDC warning lamp
Brake warning lamp
IBA OFF indicator lamp
4WD warning lamp
Malfunction indicator lamp
VDC OFF indicator lamp
CRUISE warning lamp
Low tire pressure warning lamp The lamp blinking caused by suspending communication.
High beam indicator lamp
The lamp turns OFF by suspending communication.
Turn signal indicator lamp
Tail lamp indicator lamp
A/T CHECK indicator lamp
Key warning lamp
AT P w a r n i n g l a m p
Lane departure warning lamp
LDP ON indicator lamp
CRUISE indicator lamp
Oil pressure warning lamp
SNOW mode indicator lamp
TOW mode indicator lamp
CK SUSP indicator lamp
BSW indicator lamp
Function Specifications
JSNIA2382GB
Revision: 2010 May2011 QX56

MWI-32
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (COMBINATION METER)
AIR PRES W/L
[On/Off]Status of low tire pressure warning lamp judged from low tire pressure warning
lamp signal received from BCM with CAN communication line.
KEY G/Y W/L
[On/Off] Status of KEY warning lamp
(Green/Yellow) detected from KEY warning lamp sig-
nal is received from BCM via CAN communication.
KEY KNOB W/L
[Off] This item is displayed, but cannot be monitored.
AFS OFF IND
[On/Off] Status of AFS OFF indicator lamp judged from AFS OFF indicator lamp signal re-
ceived from AFS control unit with CAN communication line.
DDS
* W/L
[Off] This item is displayed, but cannot be monitored.
LANE W/L
[On/Off] Status of lane departure warning lamp judged from lane departure warning lamp
signal received from ADAS control unit with CAN communication line.
LDP IND
[On/Off] Status of LDP ON indicator lamp judged from LDP ON indicator lamp signal re-
ceived from ADAS control unit with CAN communication line.
AT P W / L
[On/Off] Status of ATP warning lamp judged from ATP warning lamp signal received from
4WD control unit with CAN communication line.
DCA IND
[Off] This item is displayed, but cannot be monitored.
CHECK SUS IND
[On/Off] Status of CK SUSP indicator lamp judged from CK SUSP indicator lamp signal re-
ceived from E-SUS control unit with CAN communication line.
LCD
[B&P N, B&P I, ID NG, ROTAT, SFT
P, INSRT, BATT, NO KY, OUTKY, LK
WN] Displays status of Intelligent Key system warning judged from meter display signal
received from BCM with CAN communication line.
ACC TARGET
[On/Off] Status of vehicle ahead detection indicator judged from meter display signal re-
ceived from ADAS control unit with CAN communication line.
ACC DISTANCE
[Off, Short, Middle, Long] Status of set distance indicator judged from meter display signal received from
ADAS control unit with
CAN communication line.
ACC OWN VHL
[On/Off] Status of own vehicle indicator judged from meter display signal received from
ADAS control unit with
CAN communication line.
ACC SET SPEED
[Off, km/h] Status of set vehicle speed indicator judged from meter display signal received
from ADAS control unit with CAN communication line.
ACC UNIT
[On/Off] Status of display unit judged from meter display signal received from ADAS con-
trol unit with CAN communication line.
SHIFT IND
[P, R, N, D, M1, M2, M3, M4, M5, M6,
M7] Status of shift position indicator judged from shift position signal and manual mode
indicator signal received from TCM with CAN communication line.
4WD IND
[AUTO, LOCK, 2W, 4Lo, HL1, HL2,
MALF] Status of 4WD indicator judged from 4WD indicator signal received from 4WD
control unit with CAN communication line.
BSW IND
[Off] This item is displayed, but cannot be monitored.
BSW W/L
[On/Off] Status of BSW warning lamp (orange) judged from BSW warning lamp signal re-
ceived from ADAS control unit with CAN communication line.
AT S MODE SW
[On/Off] Status of snow mode switch.
M RANGE SW
[On/Off] Status of manual mode switch.
NM RANGE SW
[On/Off] Status of non-manual mode switch.
AT SFT UP SW
[On/Off] Status of manual mode shift up switch.
Display item [Unit]
MAIN
SIGNALS Description
Revision: 2010 May2011 QX56

MWI-34
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (COMBINATION METER)
Display item Description
ABS W/L Lighting history of ABS warning lamp.
VDC/TCS IND Lighting history of VDC OFF indicator lamp.
SLIP IND Lighting history of VDC warning lamp.
BRAKE W/L Lighting history of brake warning lamp.
DOOR W/L Lighting history of door open warning.
TRUNK/GLAS-H This item is displa yed, but cannot be monitored.
OIL W/L Lighting history of oil pressure warning lamp.
C-ENG W/L Lighting history of malfunction indicator lamp.
C-ENG2 W/L This item is displayed, but cannot be monitored.
CRUISE IND Lighting history of CRUISE indicator lamp.
SET IND Lighting history of SET indicator lamp.
CRUISE W/L Lighting history of CRUISE warning lamp.
BA W/L Lighting history of IBA OFF indicator lamp.
O/D OFF IND This item is displayed, but cannot be monitored.
ATC/T-AMT W/L Lighting history of A/T CHECK warning lamp.
ATF TEMP W/L This item is displayed, but cannot be monitored.
CVT IND This item is displayed, but cannot be monitored.
SPORT IND This item is displayed, but cannot be monitored.
4WD W/L Lighting history of 4WD warning lamp.
FUEL W/L Lighting history of low fuel level warning.
WASHER W/L Lighting history of low washer fluid warning.
AIR PRES W/L Lighting history of low tire pressure warning lamp.
KEY G/Y W/L Lighting history of KEY warning lamp.
KEY R W/L This item is displaye d, but cannot be monitored.
KEY KNOB W/L This item is displa yed, but cannot be monitored.
EPS W/L This item is displayed, but cannot be monitored.
e-4WD This item is displayed, but cannot be monitored.
AFS OFF IND This item is displayed, but cannot be monitored.
4WAS/RAS W/L This item is displayed, but cannot be monitored.
HDC W/L This item is displayed, but cannot be monitored.
SYS FAIL W/L This item is displa yed, but cannot be monitored.
SFT POSI W/L This item is displayed, but cannot be monitored.
HV BAT W/L This item is displayed, but cannot be monitored.
HEV BRAKE W/L This item is displayed, but cannot be monitored.
SFT OPER W/L This item is displayed, but cannot be monitored.
LANE W/L Lighting history of lane departure warning lamp.
CHAGE W/L This item is displayed, but cannot be monitored.
OIL LEV LOW This item is displayed, but cannot be monitored.
DPF W/L This item is displayed, but cannot be monitored.
TRAILER IND This item is displayed, but cannot be monitored.
RUN FLAT W/L This item is displa yed, but cannot be monitored.
E-SUS W/L This item is displayed, but cannot be monitored.
LAUNCH CNT W/L This item is displayed, but cannot be monitored.
BRAKE PAD W/L This item is displa yed, but cannot be monitored.
Revision: 2010 May2011 QX56

MWI-36
< ECU DIAGNOSIS INFORMATION >
COMBINATION METER
LIGHT INDIgnition switch
ONTail lamp indicator lamp ON On
Tail lamp indicator lamp OFF Off
OIL W/L Ignition switch
ONOil pressure warning lamp ON On
Oil pressure warning lamp OFF Off
MIL Ignition switch
ONMalfunction indicator lamp ON On
Malfunction indicator lamp OFF Off
GLOW IND Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
CRUISE IND Ignition switch
ONCRUISE indicator ON On
CRUISE indicator OFF Off
SET IND Ignition switch
ONSET indicator ON On
SET indicator OFF Off
CRUISE W/L Ignition switch
ONCRUISE warning lamp ON On
CRUISE warning lamp OFF Off
BA W/L Ignition switch
ONIBA OFF indicator lamp ON On
IBA OFF indicator lamp OFF Off
ATC/T-AMT W/L Ignition switch
ONA/T check warning lamp ON On
A/T check warning lamp OFF Off
ATF TEMP W/L Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
4WD W/L Ignition switch
ON4WD warning lamp ON On
4WD warning lamp OFF Off
FUEL W/L Ignition switch
ONDuring low fuel warning indication On
Other than the above Off
WASHER W/L Ignition switch
ONDuring low washer flui
d warning indication On
Other than the above Off
AIR PRES W/L Ignition switch
ONLow tire pressure
warning lamp ON On
Low tire pressure warning lamp OFF Off
KEY G/Y W/L Ignition switch
ONKEY warning lamp (Green/Yellow) ON On
KEY warning lamp (Green/Yellow) OFF Off
KEY KNOB W/L Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
AFS OFF IND Ignition switch
ONAFS OFF indicator lamp ON On
AFS OFF indicator lamp OFF Off
DDS W/L Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
LANE W/L
Ignition switch
ONLane departure warning lamp ON On
Lane departure warning lamp OFF Off
LDP IND Ignition switch
ONLDP ON indicator lamp ON On
LDP ON indicator lamp OFF Off
AT P W / L Ignition switch
ONATP warning lamp ON On
ATP warning lamp OFF Off
Monitor Item Condition Value/Status
Revision: 2010 May2011 QX56

MWI
COMBINATION METERMWI-43
< ECU DIAGNOSIS INFORMATION >
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DTC IndexINFOID:0000000006221723
Warning lamp/indicator lamp ABS warning lamp
The lamp turns ON by suspending communication.
VDC warning lamp
Brake warning lamp
IBA OFF indicator lamp
4WD warning lamp
Malfunction indicator lamp
VDC OFF indicator lamp
CRUISE warning lamp
Low tire pressure warning lamp The lamp blinking caused by suspending communication.
High beam indicator lamp
The lamp turns OFF by suspending communication.
Turn signal indicator lamp
Tail lamp indicator lamp
A/T CHECK indicator lamp
Key warning lamp
AT P w a r n i n g l a m p
Lane departure warning lamp
LDP ON indicator lamp
CRUISE indicator lamp
Oil pressure warning lamp
SNOW mode indicator lamp
TOW mode indicator lamp
CK SUSP indicator lamp
BSW indicator lamp
Function Specifications
Display contents of CONSULT-III Diagnostic item is detected when... Refer to
CAN COMM CIRCUIT
[U1000] When combination meter is not transmitting or receiving CAN communication signal
for 2 seconds or more. MWI-59,
"Diagnosis
Procedure"
CONTROL UNIT (CAN)
[U1010]
When detecting error during the initial diagnosis of the CAN controller of combina-
tion meter. MWI-60, "Diagnosis
Procedure"
VEHICLE SPEED
[B2205]
The abnormal vehicle speed signal is input from the ABS actuator and electric unit
(control unit) for
2 seconds or more. MWI-61, "Diagnosis
Procedure"
ENGINE SPEED
[B2267]
If ECM continuously transmits abnormal engine speed signals for 2 seconds or
more. MWI-62, "Diagnosis
Procedure"
WATER TEMP
[B2268]
If ECM continuously transmits abnormal engine coolant temperature signals for 60
seconds or more. MWI-63, "Diagnosis
Procedure"
Revision: 2010 May2011 QX56