tire pressure INFINITI QX56 2008 Factory Manual PDF

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" and must first be "woken up" using Transmitter
Activation Tool J-45295 before ID registration 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-51, "
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: March 2010 2008 QX56

WT-8
< FUNCTION DIAGNOSIS >
TPMS
FUNCTION DIAGNOSIS
TPMS
System DiagramINFOID:0000000001735375
System DescriptionINFOID:0000000001735376
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: March 2010 2008 QX56

TPMSWT-9
< FUNCTION DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
The remote keyless entry receiver is shown with the instrument
panel RH removed. The remote keyless entry receiver receives the
air pressure signal transmitted by the transmitter in each wheel.
COMBINATION METER
The combination meter receives tire pressure status from the BCM
using CAN communication. When a low tire pressure condition is
sensed by the BCM, the combination meter low tire pressure warn-
ing lamp is activated.
TIRE PRESSURE WARNING CHECK CONNECTOR
The tire pressure warning check connector can be grounded in order
to initiate self-diagnosis without a CONSULT-III. Refer to WT-12,
"Self-Diagnosis (Without CONSULT-III)". The tire pressure warning
check connector is located behind the lower portion of the instrument
panel LH.
DISPLAY UNIT
Displays the air pressure of each tire.
NOTE:
After the ignition switch is turned on, the pressure values will not be
displayed until the data of each wheel is received.
LEIA0069E
LEIA0055E
LEIA0068E
AWEIA0017GB
Revision: March 2010 2008 QX56

DIAGNOSIS SYSTEM (BCM)WT-11
< FUNCTION DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
DIAGNOSIS SYSTEM (BCM)
CONSULT-III Function (BCM)INFOID:0000000001735378
CONSULT-III DIAGNOSTIC MODES
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
DESCRIPTION
During driving, the tire pressure monitoring system receives the signal transmitted 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 pr essure judgement and self-diagnosis functions.
FUNCTION
When the tire pressure monitoring system detects low infl ation 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 Ti re Pressure Monitoring System
× : Applicable
– : Not applicable
Data Monitor Mode
Diagnostic mode Description
WORK SUPPORT Supports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are re-
ceived from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
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.
Revision: March 2010 2008 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 (Without CONSULT-III)INFOID:0000000004291535
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-III)
1. Turn ignition switch ON.
2. Ground the tire pressure warning check connector to initiate self diagnosis.
3. Compare the flashing pattern with the flash code chart below.
NOTE:
The system is normal when the low tire pressure warning lamp flashes 5 times and continues repeating. Self-
diagnosis results are erased automatically by turning the ignition switch “OFF”.
ID REGST FL1
ID REGST FR1
ID REGST RR1
ID REGST RL1Ignition 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
Flash Code Malfunction partReference
page
15
16
17
18 Tire pressure dropped below specified value. Refer to
WT-8, "
System
Description". —
21
22
23
24 Transmitter no data (FL)
Transmitter no data (FR)
Transmitter no data (RR)
Transmitter no data (RL)
WT-14
31
32
33
34Transmitter chec
ksum error (FL)
Transmitter chec ksum error (FR)
Transmitter chec ksum error (RR)
Transmitter chec ksum error (RL) WT-16
35
36
37
38Transmitter pressure
data error (FL)
Transmitter pressure data error (FR)
Transmitter pressure data error (RR)
Transmitter pressure data error (RL) WT-18
41
42
43
44Transmitter function
code error (FL)
Transmitter function code error (FR)
Transmitter function code error (RR)
Transmitter function code error (RL) WT-16
45
46
47
48Transmitter battery voltage low (FL)
Transmitter battery voltage low (FR)
Transmitter battery voltage low (RR)
Transmitter battery voltage low (RL)
WT-16
ALEIA0050GB
Revision: March 2010
2008 QX56

WT-14
< COMPONENT DIAGNOSIS >
C1708 - C1711 DATA FROM TRANSMITTER NOT BEING RECEIVED
COMPONENT DIAGNOSIS
C1708 - C1711 DATA FROM TRANSMITTER NOT BEING RECEIVED
DescriptionINFOID:0000000001735380
Tire pressure data for one or more transmitters is not being received by the BCM.
DTC LogicINFOID:0000000001735381
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.ID REGISTRATION AND VEHICLE DRIVING
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more fo r 3 minutes, and then drive the vehicle at any speed for
10 minutes.
3. Check all tire pressures with CONSULT-III within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> Inspection End.
NO >> Refer to WT-14, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001735382
FLASH CODE NO. 21, 22, 23 OR 24 (DTC C1708, C1709, C1710 OR C1711)
1.CHECK BCM
Drive for several minutes. Check all tire pressures with CONSULT-III.
Are all tire pressures displayed as 0 kPa?
YES >> GO TO 2
NO >> GO TO 3
2.CHECK TIRE PRESSURE RECEIVER CONNECTOR
Check tire pressure receiver connector for damage or loose connection.
Is tire pressure receiver connector damaged or loose?
YES >> Repair or replace tire pressure receiver connector.
NO >> Replace BCM, then GO TO 3. Refer to BCS-55, "
Removal and Installation".
3.PERFORM ID REGISTRATION
Carry out ID registration of all transmitters. Refer to WT-6, "
ID Registration Procedure".
Is there a tire that cannot register ID?
YES >> Replace malfunctioning transmitter, then GO TO 5. Refer to WT-49, "Transmitter (Pressure Sen-
sor)".
NO >> GO TO 4
4.DRIVE VEHICLE
1. Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
2. Check all tire pressures with CONSULT-III within 15 minutes after vehicle speed becomes 17 km/h (11 MPH).
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
DTC CONSULT-III DTC detecting condition
C1708 [NO - DATA] - FL Data from FL transmitter cannot be received.
C1709 [NO - DATA] - FR Data from FR transmitter cannot be received.
C1710 [NO - DATA] - RR Data from RR transmitter cannot be received.
C1711 [NO - DATA] - RL Data from RL transmitter cannot be received.
Revision: March 2010 2008 QX56

C1708 - C1711 DATA FROM TRANSMITTER NOT BEING RECEIVED
WT-15
< COMPONENT DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
YES >> Inspection End.
NO >> GO TO 5
5.ID REGISTRATION AND VEHICLE DRIVING
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more fo r 3 minutes, and then drive the vehicle at any speed for
10 minutes.
3. Check all tire pressures with CONSULT-III within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> Inspection End.
NO >> Proceed to the inspection applicable to DTC.
Special Repair RequirementINFOID:0000000001735383
Perform preliminary check. Refer to WT-5, "Preliminary Check".
Revision: March 2010 2008 QX56

WT-16
< COMPONENT DIAGNOSIS >
C1712 - C1715, C1720 - C1723, C1724 - C1727 TRANSMITTER MALFUNCTION
C1712 - C1715, C1720 - C1723, C1724 - C1727 TRANSMITTER MALFUNC-
TION
DescriptionINFOID:0000000001735384
One or more transmitters are malfunctioning internally.
DTC LogicINFOID:0000000001735385
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DRIVE VEHICLE
1. Drive at a speed of 40 km/h (25 MPH) or more fo r 3 minutes, and then drive the vehicle at any speed for
10 minutes.
2. Check all tire pressures with CONSULT-III within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> Inspection End.
NO >> Refer to WT-16, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001735386
FLASH CODE NO. 31, 32, 33, 34, 41, 42, 43, 44, 45, 46, 47 OR 48 (DTC C1712, C1713, C1714,
C1715, C1720, C1721, C1722, C1723, C1724, C1725, C1726 OR C1727)
1.PERFORM ID REGISTRATION
1. Carry out ID registration of all transmitters. Refer to WT-6, "
ID Registration Procedure".
2. Drive at a speed of 40 km/h (25 MPH) or more fo r 3 minutes, and then drive the vehicle at any speed for
10 minutes.
>> GO TO 2
2.REPLACE TRANSMITTER
1. Check low tire pressure warning lamp again for fl ashing, replace malfunctioning transmitter. Refer to WT-
49, "Transmitter (Pressure Sensor)".
2. Carry out ID registration of all transmitters.
Can ID registration of all transmitters be completed?
YES >> GO TO 3
NO >> GO TO WT-14, "
Diagnosis Procedure".
DTC CONSULT-III DTC detecting condition
C1712 [CHECKSUM - ERR] - FL Checksum data from FL transmitter is malfunctioning.
C1713 [CHECKSUM - ERR] - FR Checksum data from FR transmitter is malfunctioning.
C1714 [CHECKSUM - ERR] - RR Checksum data from RR transmitter is malfunctioning.
C1715 [CHECKSUM - ERR] - RL Ch ecksum data from RL transmitter is malfunctioning.
C1720 [CODE - ERR] - FL Function code data from FL transmitter is malfunctioning.
C1721 [CODE - ERR] - FR Function code data from FR transmitter is malfunctioning.
C1722 [CODE - ERR] - RR Function code data from RR transmitter is malfunctioning.
C1723 [CODE - ERR] - RL Function code data from RL transmitter is malfunctioning.
C1724 [BATT - VOLT - LOW] - FL Battery voltage of FL transmitter drops.
C1725 [BATT - VOLT - LOW] - FR Battery voltage of FR transmitter drops.
C1726 [BATT - VOLT - LOW] - RR Battery voltage of RR transmitter drops.
C1727 [BATT - VOLT - LOW] - RL Battery voltage of RL transmitter drops.
Revision: March 2010 2008 QX56

C1712 - C1715, C1720 - C1723, C1724 - C1727 TRANSMITTER MALFUNCTION
WT-17
< COMPONENT DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
3.DRIVE VEHICLE
1. Drive at a speed of 40 km/h (25 MPH) or more fo r 3 minutes, and then drive the vehicle at any speed for
10 minutes.
2. Check all tire pressures with CONSULT-III within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> Inspection End.
NO >> Replace malfunctioning transmitter, and perform Step 3 again.
Special Repair RequirementINFOID:0000000004291542
Perform preliminary check. Refer to WT-5, "Preliminary Check".
Revision: March 2010 2008 QX56

WT-18
< COMPONENT DIAGNOSIS >
C1716 - C1719 TRANSMITTER PRESSURE MALFUNCTION
C1716 - C1719 TRANSMITTER PRESSURE MALFUNCTION
DescriptionINFOID:0000000001735388
Air pressure data from one or more transmitters is out of range.
DTC LogicINFOID:0000000001735389
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.ID REGISTRATION AND VEHICLE DRIVING
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more fo r 3 minutes, and then drive the vehicle at any speed for
10 minutes.
3. Check all tire pressures with CONSULT-III within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> Inspection End.
NO >> Refer to WT-18, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001735390
FLASH CODE NO. 35, 36, 37 OR 38 (DTC C1716, C1717, C1718 OR C1719)
1.CHECK ALL TIRE PRESSURES
Check all tire pressures. Refer to WT-51, "
Tire".
Are there any tires with pressure of 64 psi or more?
YES >> Adjust tire pressure to specified value.
NO >> GO TO 2
2.ID REGISTRATION AND VEHICLE DRIVING
1. Carry out ID registration of all transmitters. Refer to WT-6, "
ID Registration Procedure".
2. Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
3. Check all tire pressures with CONSULT-III within 15 minutes after vehicle speed becomes 17 km/h (11
MPH).
Does
“DATA MONITOR ITEM” display 64 psi or more?
YES >> Replace transmitter. Refer to WT-49, "Transmitter (Pressure Sensor)". GO TO 3.
NO >> GO TO 3
3.ID REGISTRATION AND VEHICLE DRIVING
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more fo r 3 minutes, and then drive the vehicle at any speed for
10 minutes.
3. Check all tire pressures with CONSULT-III within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> Inspection End.
NO >> Proceed to the inspection applicable to DTC.
Special Repair RequirementINFOID:0000000004291543
Perform preliminary check. Refer to WT-5, "Preliminary Check".
DTCCONSULT - III DTC detecting condition
C1716 [PRESSDATA - ERR] FL Air pressure data from FL transmitter is malfunctioning.
C1717 [PRESSDATA - ERR] FR Air pressure data from FR transmitter is malfunctioning.
C1718 [PRESSDATA - ERR] RR Air pressure data from RR transmitter is malfunctioning.
C1719 [PRESSDATA - ERR] RL Air pressure data from RL transmitter is malfunctioning.
Revision: March 2010 2008 QX56