sensor INFINITI QX4 2005 Factory Service Manual

TRANSFER ASSEMBLY
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d. Install the reverse balls, relief balls and relief springs, accumula-
tor pistons and valve springs to the upper body.
e. Install the lower body and separator plate to the upper body.
CAUTION:
Do not reuse separator plates.
f. With the lower body down, tighten the two bolts shown.
g. Apply ATF to the O-rings, and install them to each solenoid
valve, switch and terminal body.
CAUTION:
Do not reuse O-rings.
h. Install the following to the control valve assembly:

Clutch pressure solenoid valve

Clutch pressure switch

2-4WD shift solenoid valve

Line pressure switch

Transfer fluid temperature sensor
10. Apply ATF to lip seals, and install them to the center case.
CAUTION:

Do not reuse lip seals.

There are 2 kinds of lip seals (lip seal of large inner diam-
eter: 5 pieces, lip seal of small inner diameter: 2 pieces).
Confirm their position for installation.
SDIA2126E
WDIA0200E
WDIA0198E
SDIA2123E

WT-1
ROAD WHEELS & TIRES
E SUSPENSION
CONTENTS
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SECTION WT
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WT
Revision: October 20052005 QX56 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
DISPLAY UNIT ...................................................... 9
CAN COMMUNICATION .......................................... 10
System Description ................................................ 10
TROUBLE DIAGNOSES ...........................................11
Wiring Diagram .......................................................11
BCM Input/Output Signal Standard ........................ 13
ID Registration Procedure ...................................... 14
ID REGISTRATION WITH TRANSMITTER
ACTIVATION TOOL ............................................ 14
ID REGISTRATION WITHOUT TRANSMITTER
ACTIVATION TOOL ............................................ 15
Transmitter Wake Up Operation ............................. 16
WITH TRANSMITTER ACTIVATION TOOL ........ 16
CONSULT-II Function (BCM) ................................. 17
Self-Diagnosis ........................................................ 18DESCRIPTION .................................................... 18
FUNCTION .......................................................... 18
CONSULT-II ......................................................... 18
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ...................................................... 20
INTRODUCTION ................................................. 20
WORK FLOW ...................................................... 20
Preliminary Check .................................................. 21
Malfunction Code/Symptom Chart .......................... 22
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ........................................................................ 24
Inspection 1: Transmitter or Control Unit (BCM) ..... 24
MALFUNCTION CODE NO. 21, 22, 23 OR 24 ... 24
Inspection 2: Transmitter - 1 ................................... 24
MALFUNCTION CODE NO. 31, 32, 33, 34, 41,
42, 43, 44, 45, 46, 47 OR 48 ............................... 24
Inspection 3: Transmitter - 2 ................................... 25
MALFUNCTION CODE NO. 35, 36, 37 OR 38 ... 25
Inspection 4: Vehicle Speed Signal ........................ 26
MALFUNCTION CODE NO. 52 ........................... 26
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 27
Inspection 1: Warning Lamp Does Not Come On
When Ignition Switch Is Turned On ........................ 27
Inspection 2: Warning Lamp Stays On When Ignition
Switch Is Turned On ............................................... 27
Inspection 3: Warning Lamp Flashes When Ignition
Switch Is Turned On ............................................... 29
Inspection 4: Hazard Warning Lamp Flashes When
Ignition Switch Is Turned On .................................. 30
Inspection 5: “TIRE PRESSURE” Information In
Display Unit Does Not Exist .................................... 31
Inspection 6: ID Registration Cannot Be Completed ... 31
REMOVAL AND INSTALLATION ............................. 32
Transmitter (Pressure Sensor) ............................... 32
REMOVAL ........................................................... 32
INSTALLATION ................................................... 32
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 34
Road Wheel ............................................................ 34
Tire ......................................................................... 34

WT-8
LOW TIRE PRESSURE WARNING SYSTEM
Revision: October 20052005 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

WT-14
TROUBLE DIAGNOSES
Revision: October 20052005 QX56
ID Registration ProcedureEES001I7
ID REGISTRATION WITH TRANSMITTER ACTIVATION TOOL
This procedure must be done after replacement of a low tire pressure warning sensor or BCM. New
replacement transmitters are provided "asleep" and must 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 carry 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 LAN-5, "
CAN COMMUNICATION" .
4. Select “AIR PRESSURE MONITOR” on "SELECT WORK ITEM" screen.
5. Select “WORK SUPPORT” on "SELECT DIAG MODE" screen, and select "ID REGIST".
6. With the transmitter activation tool (J-45295) pushed against the
front left transmitter position of the tire air valve, 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 warning lamp flashes.
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)
LEIA0036E
Activation tire position Buzzer Hazard warning lamp CONSULT-II
1 Front LH Once
2 times flashing“YET”
↓
“DONE” 2 Front RH 2 times
3Rear RH 3 times
4 Rear LH 4 times

TROUBLE DIAGNOSES
WT-15
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Revision: October 20052005 QX56
ID REGISTRATION WITHOUT TRANSMITTER ACTIVATION TOOL
This procedure must be done after replacement of a low tire pressure warning sensor or BCM. New
replacement transmitters are provided "asleep" and must 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 LAN-5, "
CAN COMMUNICATION" .
4. Select “AIR PRESSURE MONITOR” on “SELECT WORK 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.
8. Inflate all tires to proper pressure. Refer to WT-34, "
Tire"
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)
Activation tire position CONSULT-II
Front LH
“YET”
↓
“DONE” Front RH
Rear RH
Rear LH

WT-16
TROUBLE DIAGNOSES
Revision: October 20052005 QX56
Transmitter Wake Up OperationEES001I8
NOTE:
This procedure must be done after replacement of a low tire pressure warning sensor or BCM. New
replacement transmitters are provided "asleep" and must first be "woken up" using Transmitter Acti-
vation Tool J-45295 before ID registration can be performed.
WITH TRANSMITTER ACTIVATION TOOL
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 hazard 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. Refer to LT- 1 2 3 , "
TRAILER TOW"
3. After completing wake up of all transmitters, make sure low tire pressure warning lamp goes out.Tool number — (J-45295)
LEIA0036E
LEIA0059E

WT-24
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: October 20052005 QX56
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMSPFP:00000
Inspection 1: Transmitter or Control Unit (BCM)EES001ID
MALFUNCTION CODE NO. 21, 22, 23 OR 24
1. CHECK CONTROL UNIT
Drive for several minutes. Check all tire pressures with CONSULT-II “DATA MONITOR ITEM”.
Are all tire pressures displayed as 0 kPa?
YES >> GO TO 2.
NO >> GO TO 3.
2. CHECK REMOTE KEYLESS ENTRY RECEIVER CONNECTOR
Check remote keyless entry receiver connector for damage or loose connections.
OK or NG
OK >> Replace BCM, then GO TO 3. Refer to BCS-20, "Removal and Installation of BCM" .
NG >> Repair or replace remote keyless entry receiver connector.
3. ID REGISTRATION
Carry out ID registration of all transmitters.
Is there a tire that cannot register ID?
YES >> Replace transmitter of the tire, then GO TO 5. Refer to WT-32, "Transmitter (Pressure Sensor)" .
NO >> GO TO 4.
4. VEHICLE DRIVING
Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
Check all tire pressures with CONSULT-II “DATA MONITOR ITEM” 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?
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 for 3 minutes, and then drive the vehicle at any speed for
10 minutes. Then check all tire pressures with CONSULT-II “DATA MONITOR ITEM” within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> Inspection End.
NO >> GO TO the inspection applicable to DTC.
Inspection 2: Transmitter - 1EES001IE
MALFUNCTION CODE NO. 31, 32, 33, 34, 41, 42, 43, 44, 45, 46, 47 OR 48
1. ID REGISTRATION (CORRECTION OF TRANSMITTER LOCATION)
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for
10 minutes.
>> GO TO 2.

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
WT-25
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2. REPLACE TRANSMITTER
1. Check low tire pressure warning lamp again for flashing, replace malfunctioning transmitter.
2. Carry out ID registration of all transmitters.
Can ID registration of all transmitters be completed?
YES >> GO TO 3.
NO >> GO TO Inspection 1. Refer to WT-24, "
Inspection 1: Transmitter or Control Unit (BCM)" .
3. VEHICLE DRIVING
Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for 10
minutes. Then check all tire pressures with CONSULT-II “DATA MONITOR ITEM” 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. Refer to WT-32, "
Tran sm it ter
(Pressure Sensor)" .
Inspection 3: Transmitter - 2EES001IF
MALFUNCTION CODE NO. 35, 36, 37 OR 38
1. CHECK ALL TIRE PRESSURES
Check all tire pressures. Refer to WT-34, "
Tire"
Are there any tires with pressure of 64 psi or more?
YES >> Adjust tire pressure to specified value.
NO >> GO TO 2.
2. VEHICLE DRIVING
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
Check all tire pressures with CONSULT-II “DATA MONITOR ITEM” within 15 minutes after vehicle speed
becomes 17 km/h (11 MPH).
>> Replace transmitter with new one if “DATA MONITOR ITEM” displays 64 psi or more. Refer to
WT-32, "
Transmitter (Pressure Sensor)" . Then 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 for 3 minutes, and then drive the vehicle at any speed for
10 minutes. Then check all tire pressures with CONSULT-II “DATA MONITOR ITEM” within 5 minutes.
Does
“DATA MONITOR ITEM” display tire pressure as normal without any warning lamp?
YES >> Inspection End.
NO >> GO TO the inspection applicable to DTC.

WT-26
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: October 20052005 QX56
Inspection 4: Vehicle Speed SignalEES001Q3
MALFUNCTION CODE NO. 52
1. SELF-DIAGNOSTIC RESULT CHECK
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. Select "BCM" on “SELECT SYSTEM” screen.
NOTE:
If the BCM is not indicated, refer to LAN-5, "
CAN COMMUNICATION" .
4. Select "BCM C/U" on "SELECT WORK ITEM" screen, and select "SELF-DIAG RESULTS".
5. Check display contents in self-diagnostic results.
Is "CAN COMM CIRCUIT" displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system. GO TO LAN-5, "CAN COMMUNICATION"
NO >> GO TO 2.
2. CHECK BCM
Perform BCM diagnosis. Refer to BCS-11, "
CONSULT–II INSPECTION PROCEDURE" .
Inspection results OK?
OK >> Perform Vehicle Speed Sensor Inspection. Refer to EC-373, "Diagnostic Procedure" .
NG >> Replace BCM. Refer to BCS-20, "
Removal and Installation of BCM" .

WT-32
REMOVAL AND INSTALLATION
Revision: October 20052005 QX56
REMOVAL AND INSTALLATIONPFP:00000
Transmitter (Pressure Sensor)EES001IN
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 nornal.
INSTALLATION
1. Place first side of tire onto rim.
2. Mount transmitter on rim and tighten nut.
SEIA0047E
SEIA0048E
SEIA0049E
Transmitter nut
tightening torque: 5.5 N·m (0.56 kg-m, 49 in-lb)
WEIA0137E