warning INFINITI QX56 2006 Factory Service Manual

WT-1
ROAD WHEELS & TIRES
E SUSPENSION
CONTENTS
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PRECAUTIONS .....................................................
..... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 2
PREPARATION ...................................................... ..... 3
Special Service Tool ............................................ ..... 3
Commercial Service Tools ................................... ..... 3
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 4
NVH Troubleshooting Chart ................................ ..... 4
WHEEL .................................................................. ..... 5
Inspection ............................................................ ..... 5
WHEEL AND TIRE ASSEMBLY ............................ ..... 6
Balancing Wheels ............................................... ..... 6
REMOVAL ........................................................ ..... 6
WHEEL BALANCE ADJUSTMENT ................. ..... 6
Rotation ............................................................... ..... 7
LOW TIRE PRESSURE WARNING SYSTEM ....... ..... 8
System Components ........................................... ..... 8
System Description ............................................. ..... 8
TRANSMITTER ................................................ ..... 8
REMOTE KEYLESS ENTRY RECEIVER ........ ..... 8
BCM (BODY CONTROL MODULE) ................. ..... 9
WARNING LAMP AND BUZZER ..................... ..... 9
COMBINATION METER .................................. ..... 9
DISPLAY UNIT ................................................. ..... 9
CAN COMMUNICATION ....................................... ... 10
System Description ............................................. ... 10
TROUBLE DIAGNOSES ....................................... ....11
Wiring Diagram – T/WARN – .............................. .... 11
Terminals and Reference Values for BCM .......... ... 13
ID Registration Procedure ................................... ... 14
ID REGISTRATION WITH TRANSMITTER
ACTIVATION TOOL ......................................... ... 14
ID REGISTRATION WITHOUT TRANSMITTER
ACTIVATION TOOL ......................................... ... 16
Transmitter Wake Up Operation .......................... ... 18
WITH TRANSMITTER ACTIVATION TOOL ..... ... 18
CONSULT-II Function (BCM) .............................. ... 19
Self-Diagnosis ..................................................... ... 20DESCRIPTION .................................................
... 20
FUNCTION ....................................................... ... 20
CONSULT-II ...................................................... ... 20
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ................................................... ... 22
INTRODUCTION .............................................. ... 22
WORK FLOW ................................................... ... 22
Preliminary Check ............................................... ... 23
Malfunction Code/Symptom Chart ....................... ... 24
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ..................................................................... ... 26
Inspection 1: Transmitter or Control Unit (BCM) .. ... 26
MALFUNCTION CODE NO. 21, 22, 23 OR 24
(DTC C1708, C1709, C1710 OR C1711) ......... ... 26
Inspection 2: Transmitter - 1 ................................ ... 26
MALFUNCTION CODE NO. 31, 32, 33, 34, 41,
42, 43, 44, 45, 46, 47 OR 48 ............................ ... 26
Inspection 3: Transmitter - 2 ................................ ... 27
MALFUNCTION CODE NO. 35, 36, 37 OR 38 ... 27
Inspection 4: Vehicle Speed Signal ..................... ... 28
MALFUNCTION CODE NO. 52 (DTC C1729) . ... 28
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 29
Inspection 1: Warning Lamp Does Not Come On
When Ignition Switch Is Turned On ..................... ... 29
Inspection 2: Low Tire Pressure Warning Lamp
Stays On When Ignition Switch Is Turned On ...... ... 30
Inspection 3: Warning Lamp Flashes When Ignition
Switch Is Turned On ............................................ ... 32
Inspection 4: Hazard Warning Lamp Flashes When
Ignition Switch Is Turned On ............................... ... 33
Inspection 5: “TIRE PRESSURE” Information In
Display Unit Does Not Exist ................................. ... 34
Inspection 6: ID Registration Cannot Be Completed ... 35
REMOVAL AND INSTALLATION .......................... ... 36
Transmitter (Pressure Sensor) ............................ ... 36
REMOVAL ........................................................ ... 36
INSTALLATION ................................................ ... 36
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 38
Road Wheel ............................................................ 38
Tire ...................................................................... ... 38

WT-2
PRECAUTIONS
Revision: November 20092006 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EES0025O
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER ”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.

WT-8
LOW TIRE PRESSURE WARNING SYSTEM
Revision: November 20092006 QX56
LOW TIRE PRESSURE WARNING SYSTEMPFP:40300
System ComponentsEES001I2
System DescriptionEES001I3
TRANSMITTER
A sensor-transmitter integrated with a valve is installed on a wheel,
and transmits a detected air pressure signal in the form of a radio
wave.
REMOTE KEYLESS ENTRY RECEIVER
Receives the air pressure signal transmitted by the transmitter in
each wheel.
WEIA0081E
WEIA0137E
LEIA0069E

LOW TIRE PRESSURE WARNING SYSTEMWT-9
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BCM (BODY CONTROL MODULE)
Reads the air pressure signal received by the remote keyless entry
receiver, and controls the low tire pressure warning lamp and the
buzzer operations as shown below. It also has a judgement function
to detect a system malfunction.
WARNING LAMP AND BUZZER
Indicates low tire pressure or system malfunction.
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 warning lamp and
buzzer are activated.
DISPLAY UNIT
Displays the air pressure of each tire.

After the ignition switch is turned on, the pressure values will not
be displayed until the data of each wheel is received.
LEIA0068E
ConditionWarning lamp Buzzer
Less than 193 kPa (2.0 kg/cm
2 , 28 psi)
[Flat tire] ON
OFF
System malfunction After key ON,
flashes once per second for 1
minute, then stays ON. OFF
System normal ON for 1 second
after ignition ON OFF
LEIA0055E
WEIA0082E

TROUBLE DIAGNOSESWT-13
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Terminals and Reference Values for BCMEES001I6
( ): Wire colorTerminals
ItemCondition Voltage (V)
(Approx.)
+ –
15 (L/W)
Ground Tire pressure warning check
connector
—
5
18 (P) Remote keyless entry receiver
(Ground) —
0
19 (V/W) Remote keyless entry receiver
(Power supply) Stand-by
Press any of the electronic
switches
20 (G/W) Remote keyless entry receiver
(Signal) Stand-by
Press any of the electronic
switches
38 (W/L) Ignition switch Ignition switch ON or START Battery voltage
39 (L) Data line (CAN-H) ——
40 (P) Data line (CAN-L) ——
67 (B) GND —0
70 (W/B) Battery power supply —Battery voltage
OCC3879D
OCC3882D
OCC3881D
OCC3880D

WT-14
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
ID Registration ProcedureEES0025P
ID REGISTRATION WITH TRANSMITTER ACTIVATION TOOL
NOTE:
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.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
during self-diagnosis depending on control unit which carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con-
nector, then turn the ignition switch ON.
2. Select "START (NISSAN BASED VHCL)".
3. Touch “BCM” on "SELECT SYSTEM" screen.
NOTE:
If "BCM" is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
4. Select “AIR PRESSURE MONITOR ” on "SELECT TEST ITEM" screen.
5. Select “WORK SUPPORT ” on "SELECT DIAG MODE" screen,
and select "ID REGIST".
BCIA0029E
BCIA0030E
BCIA0031E

TROUBLE DIAGNOSESWT-15
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6. Push the transmitter activation tool against the tire near the front
left transmitter. Press the button for 5 seconds.
7. Register the IDs in order from FR LH, FR RH, RR RH and RR LH. When ID registration of each wheel has been completed, a buzzer sounds and the hazard warning lamps flash.
8. After completing all ID registrations, press “END” to complete the procedure.
NOTE:
Be sure to register the IDs in order from FR LH, FR RH, RR RH, to RR LH, or the self-diagnostic results dis-
play will not function properly. Tool number : (J-45295)
SEIA0101E
Activation tire position
BuzzerHazard warning lamp CONSULT-II
1 Front LH Once
2 times flashing “
YET ”
↓
“ DONE ”
2F
ro n t R H 2 tim es
3R ear R H 3 tim es
4 Rear LH 4 times

WT-16
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
ID REGISTRATION WITHOUT TRANSMITTER ACTIVATION TOOL
NOTE:
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. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con-
nector, then turn the ignition switch ON.
2. Select "START (NISSAN BASED VHCL)".
3. Touch “BCM” on "SELECT SYSTEM" screen.
NOTE:
If "BCM" is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
4. Select “AIR PRESSURE MONITOR” on “SELECT TEST ITEM"
screen.
5. Select “WORK SUPPORT ” on “SELECT DIAG MODE" screen,
and select "ID REGIST".
6. Adjust the tire pressure to the values shown in the table below for ID registration, and drive the vehicle at 15 km/h (9.4 MPH) or
more for a few minutes.
7. After completing all ID registrations, press “END” to complete the procedure.
BCIA0029E
BCIA0030E
BCIA0031E
Tire position
Tire pressure kPa (kg/cm2 , psi)
Front – Left 250 (2.5, 36)
Front – Right 230 (2.3, 33)
Rear – Right 210 (2.1, 30)
Rear – Left 190 (1.9, 27)

WT-18
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
Transmitter Wake Up OperationEES001I8
WITH TRANSMITTER ACTIVATION TOOL
NOTE:
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. With the transmitter activation tool (J-45295) pushed against the
front left transmitter, press the button for 5 seconds.

With ignition switch ON, as the low tire pressure warning lamp
flashes per the following diagram, the respective transmitter
then must be woken up.
2. When the BCM finishes assigning each tire ID, the BCM flashes the hazard warning lamps and trailer flasher lamps (if equipped) and sends flashing indicator status by CAN according to the following time
chart. Please see trailer flasher specification details of trailer flashing lamps since the BCM controls trailer
flasher lamps as brake lamps.
3. After completing wake up of all transmitters, make sure low tire pressure warning lamp goes out. Tool number
— (J-45295)
SEIA0101E
LEIA0059E

WT-20
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
Self-DiagnosisEES001I9
DESCRIPTION
During driving, the low tire pressure warning system receives the signal transmitted from the transmitter
installed in each wheel, and gives alarms when the tire pressure becomes low. The control unit (BCM) for this
system has pressure judgement and trouble diagnosis functions.
FUNCTION
When the low tire pressure warning system detects low inflation pressure or another unusual symptom, the
warning lamp in the combination meter comes on. To start the self-diagnostic results mode, ground the tire
pressure warning check terminal. The malfunction location is indicated by the low tire pressure warning lamp
flashing and the buzzer sounds.
CONSULT-II
CONSULT-II Application to Low Tire Pressure Warning System
× : Applicable
– : Not applicable
Self-Diagnostic Results 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-II. ITEM
SELF-DIAGNOSTIC RESULTS DATA MONITOR
Front - Left transmitter ××
Front - Right transmitter ××
Rear - Left transmitter ××
Rear - Right transmitter ××
Warning lamp —×
Vehicle speed ××
Buzzer (in combination meter) —×
CAN Communication ××
Diagnostic itemDiagnostic item is detected when ···
FLAT - TIRE - FL [C1704]
FLAT - TIRE - FR [C1705]
FLAT - TIRE - RR [C1706]
FLAT - TIRE - RL [C1707] Front-left tire pressure drops to 193 kPa (2.0 kg/cm
2 , 28 psi) or less
Front-right tire pressure drops to 193 kPa (2.0 kg/cm2 , 28 psi) or less
Rear-right tire pressure drops to 193 kPa (2.0 kg/cm2 , 28 psi) or less
Rear-left tire pressure drops to 193 kPa (2.0 kg/cm2 , 28 psi) or less
[NO-DATA] - FL [C1708]
[NO-DATA] - FR [C1709]
[NO-DATA] - RR [C1710]
[NO-DATA] - RL [C1711] Data from front-left transmitter cannot be received.
Data from front-right transmitter cannot be received.
Data from rear-right transmitter cannot be received.
Data from rear-left transmitter cannot be received.
[CHECKSUM- ERR] - FL
[CHECKSUM- ERR] - FR
[CHECKSUM- ERR] - RR
[CHECKSUM- ERR] - RL Checksum data from front-left transmitter is malfunctioning.
Checksum data from front-right transmitter is malfunctioning.
Checksum data from rear-right transmitter is malfunctioning.
Checksum data from rear-left transmitter is malfunctioning.
[PRESSDATA- ERR] - FL
[PRESSDATA- ERR] - FR
[PRESSDATA- ERR] - RR
[PRESSDATA- ERR] - RL Air pressure data from front-left transmitter is malfunctioning.
Air pressure data from front-right transmitter is malfunctioning.
Air pressure data from rear-right transmitter is malfunctioning.
Air pressure data from rear-left transmitter is malfunctioning.
[CODE- ERR] - FL
[CODE- ERR] - FR
[CODE- ERR] - RR
[CODE- ERR] - RL Function code data from front-left transmitter is malfunctioning.
Function code data from front-right transmitter is malfunctioning.
Function code data from rear-right transmitter is malfunctioning.
Function code data from rear-left transmitter is malfunctioning.
[BATT - VOLT - LOW] - FL
[BATT - VOLT - LOW] - FR
[BATT - VOLT - LOW] - RR
[BATT - VOLT - LOW] - RL Battery voltage of front-left transmitter drops.
Battery voltage of front-right transmitter drops.
Battery voltage of rear-right transmitter drops.
Battery voltage of rear-left transmitter drops.
VHCL_SPEED_SIG_ERR [C1729] Vehicle speed signal is in error.