2009 INFINITI QX56 flat tire

INSPECTION AND ADJUSTMENTWT-7
< BASIC INSPECTION >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
This procedure must be done after replacement of a low tire pressure warning transmitter or BCM.
New replacement transmitters are provided "asleep" an d must first be "woken up" before ID registra-
tion can be performed.
1. Connect CONSULT-III.
2. Select "ID REGIST" under BCM.
3. Adjust the tire pressures to the values shown in the table and drive the vehicle at 40 km/h (25 MPH) or
more for a few minutes.
4. After completing all ID registrations, press “END” to complete the procedure.
5. Inflate all tires to proper pressure. Refer to WT-45, "
Tire".
Tire position
Tire pressure kPa (kg/cm2, psi)
Front LH 250 (2.5, 36)
Front RH 230 (2.3, 33)
Rear RH 210 (2.1, 30)
Rear LH 190 (1.9, 27)
Activation tire position CONSULT-III
Front LH “YET”↓
“DONE”
Front RH
Rear RHRear LH
Revision: December 20092009 QX56

WT-8
< FUNCTION DIAGNOSIS >
TPMS
FUNCTION DIAGNOSIS
TPMS
System DiagramINFOID:0000000003772367
System DescriptionINFOID:0000000003772368
BODY CONTROL MODULE (BCM)
The BCM is shown with the lower instrument panel LH removed. The
BCM reads the air pressure signal received by the remote keyless
entry receiver, and controls the low tire pressure warning lamp as
shown below. It also has a self-d iagnosis function to detect a system
malfunction.
TRANSMITTER
A sensor-transmitter integrated with a valve is installed in each
wheel, and transmits a detected air pr essure signal in the form of a
radio wave. The radio signal is received by the remote keyless entry
receiver.
REMOTE KEYLESS ENTRY RECEIVER
ALEIA0004GB
Condition Low tire pressure warning lamp
System normal On for 1 second after ignition ON
Tire less than 193 kPa (2.0 kg/cm
2 , 28 psi)
[Flat tire] ON
TPMS malfunction After key ON, flashes once per sec-
ond for 1 minute, then stays ON
LEIA0068E
WEIA0137E
Revision: December 20092009 QX56

WT-12
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or the actual malfunction location may be different from that displayed on
CONSULT-III.
Self-Diagnosis (With CONSULT-III)INFOID:0000000003772371
DESCRIPTION
During driving, the tire pressure monitoring system receives the signal trans mitted from the transmitter
installed in each wheel, and turns on the low tire pressure warning lamp when the tire pressure becomes low.
The control unit (BCM) for this system has pressure judgement and self-diagnosis functions.
FUNCTION
When the tire pressure monitoring system detects low inflation pressure or an internal malfunction, the low tire
pressure warning lamp in the combination meter comes on. The malfunction is indicated by the low tire pres-
sure warning lamp flashing.
CONSULT-III Application to Tire Pressure Monitoring System
× : Applicable
– : Not applicable
Data Monitor Mode
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or the actual malfunction location may be different from that displayed on
CONSULT-III. ID REGST FL1
ID REGST FR1
ID REGST RR1
ID REGST RL1
Ignition switch ON ID not registered: YET
ID registered: DONE
WARNING LAMP Low tire pressure
warning lamp on: ON
Low tire pressure warning lamp off: OFF
MONITOR
CONDITION SPECIFICATION
ITEMSELF-DIAGNOSTIC RESULTS DATA MONITOR
Front - Left transmitter ××
Front - Right transmitter ××
Rear - Left transmitter ××
Rear - Right transmitter ××
Warning lamp —×
Vehicle speed ××
CAN Communication ××
MONITORCONDITION SPECIFICATION
VHCL SPEED Drive vehicle. Vehicle speed (km/h or MPH)
AIR PRESS FL
AIR PRESS FR
AIR PRESS RR
AIR PRESS RL • Drive vehicle for a few minutes.
Tire pressure (kPa or psi)
or
• Ignition switch ON and activation tool is transmitting activation signals.
ID REGST FL1
ID REGST FR1
ID REGST RR1
ID REGST RL1 Ignition switch ON ID not registered: YET
ID registered: DONE
WARNING LAMP Low tire pressure
warning lamp on: ON
Low tire pressure warning lamp off: OFF
Revision: December 20092009 QX56

WT-40
< ON-VEHICLE MAINTENANCE >
WHEEL
ON-VEHICLE MAINTENANCE
WHEEL
InspectionINFOID:0000000003772402
1. Check tires for wear and improper inflation.
2. Check wheels for deformation, cracks and other damage. Ifdeformed, remove wheel and check wheel runout.
a. Remove tire from wheel and mount wheel on a tire balance machine.
b. Set dial indicator as shown. Refer to WT-45, "
Road Wheel" .
3. Check front wheel bearings for looseness.
4. Check front suspension for looseness.
SFA975B
Revision: December 20092009 QX56

REMOVAL AND INSTALLATIONWT-43
< REMOVAL AND INSTALLATION >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
REMOVAL AND INSTALLATION
REMOVAL AND INSTALLATION
Transmitter (Pressure Sensor)INFOID:0000000003772405
REMOVAL
1. Deflate tire. Unscrew transmitter retaining nut and allow transmitter to fall into tire.
2. Gently bounce tire so that transmitter falls to bottom of tire. Place wheel and tire assembly on tire changing machine and
break both tire beads. Ensure that the transmitter remains at the
bottom of the tire while breaking the bead.
3. Turn tire so that valve hole is at bottom, and gently bounce the tire to ensure transmitter is near valve hole. Carefully lift tire onto
turntable and position valve hole (and transmitter) 270 degrees
from mounting/dismounting head.
4. Lubricate tire well, and remove top side of tire. Reach inside the tire and remove the transmitter.
5. Remove the second side of the tire as normal.
INSTALLATION
1. Place first side of tire onto rim.
2. Mount transmitter on rim and tighten nut to specification.
SEIA0047E
WEIA0046E
SEIA0049E
Transmitter nut : 7.7 N·m (0.79 kg-m, 68 in-lb)
WEIA0137E
Revision: December 20092009 QX56

WT-44
< REMOVAL AND INSTALLATION >
REMOVAL AND INSTALLATION
3. Place wheel on turntable of tire machine. Ensure that transmitteris 270 degrees from mounting/dismounting head.
NOTE:
Do not touch transmitter with mounting head.
4. Lubricate tire well, and install second side of tire as normal. Ensure that tire does not rotate relative to rim.
5. Inflate tire and balance the wheel and tire assembly. Refer to WT-41, "
Adjustment".
6. Install Wheel and tire assembly in appropriate wheel position on vehicle.
NOTE:
If replacing the transmitter, then transmitter wake up operation
must be performed. Refer to WT-5, "
Transmitter Wake Up Operation" .
7. Adjust neutral position of steering angle sensor. Refer to BRC-8, "
ADJUSTMENT OF STEERING ANGLE
SENSOR NEUTRAL POSITION : Special Repair Requirement" .
WEIA0046E
Revision: December 20092009 QX56