2004 INFINITI QX56 steering wheel

POWER STEERING GEAR AND LINKAGE
PS-17
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PS
Revision: August 20072004 QX56

With steering wheel in straight ahead position, make sure slit of
lower joint fits with the projection on rear cover cap, while check-
ing that mark on steering gear assembly aligns with mark on
rear cover cap

After installation, bleed the air from the steering hydraulic system. Refer to PS-6, "Air Bleeding Hydraulic
System" .
INSPECTION AFTER INSTALLATION
Check if steering wheel turns smoothly when it is turned several times fully to the left and right lock positions.
Disassembly and AssemblyEGS000MV
SST 4 91 C
1. Outer socket 2. Boot clamp (small) 3. Boot
4. Inner socket 5. Boot clamp (large) 6. Gear housing assembly
7. Cylinder tubes 8. Rear cover cap 9. Rear cover
10. O-ring 11. Sub-gear assembly 12. Rack oil seal
13. Rack assembly 14. Rack Teflon® ring 15. O-ring
16. End cover assembly
WGIA0093E

SERVICE DATA AND SPECIFICATIONS (SDS)
PS-33
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Revision: August 20072004 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Steering WheelEGS000NE
Steering ColumnEGS000NG
Inspection After Assembly
Unit: mm (in)
Inspection After Removal
Unit: mm (in) End play of the axial direction for steering wheel 0 mm (0 in)
Steering wheel play on the outer circumference 0 − 35 mm (0 − 1.38 in)
Steering wheel turning force 39 N (4 kg-f, 9 lb-f) or less
Steering column length “L”610 (24.02)
WGIA0080E
Steering column length “L2”262 (10.31)
Steering column length “L1” 158 (6.22)
SGIA0475E

RAX-4
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: August 20072004 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS001AS
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
—
RAX-8—
RAX-5—
RFD-5, "
NVH Troubleshooting Chart
"
FAX -4, "
NVH Troubleshooting Chart
" (FAX), FSU-4, "
NVH Troubleshooting Chart
" (FSU)
RSU-5, "
NVH Troubleshooting Chart
"
WT-3, "
NVH Troubleshooting Chart
"
WT-3, "
NVH Troubleshooting Chart
"
PR-3, "
NVH Troubleshooting Chart
"
BR-5, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Excessive joint angle
Joint sliding resistance
Imbalance
Improper installation, looseness
Parts interference
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
REAR SUSPENSION
TIRES
ROAD WHEEL
PROPELLER SHAFT
BRAKES
STEERING
SymptomNoise×× ×× ×× ×××××
Shake× × ×× × ×××××
Vibration×× ×× × × × ×
Shimmy×× ×××××
Shudder× × ×× ××
Poor quality ride or handling×× ×× ×× ×

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
RFD-5
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RFD
Revision: August 20072004 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS002JJ
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable Reference page
RFD-17RFD-19RFD-19RFD-12—
MA-10, "
Fluids and Lubricants
"
PR-3, "
NVH Troubleshooting Chart
"
FA X - 4
(FAX), RAX-4
(RAX), FSU-4
(FSU), RFD-5
(RSU)
WT-3, "
NVH Troubleshooting Chart
"
WT-3, "
NVH Troubleshooting Chart
"
FA X - 4 , "
NVH Troubleshooting Chart
" (front)
RAX-4, "
NVH Troubleshooting Chart
" (rear)
BR-5, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Rough gear tooth
Improper gear contact
Tooth surfaces worn
Incorrect backlash
Companion flange excessive runout
Improper gear oil
PROPELLER SHAFT
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom FINAL DRIVE Noise×××××××××××××

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
RSU-5
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RSU
Revision: August 20072004 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEES00111
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable Reference page
RSU-25RSU-34
—
—
—
RSU-25
RSU-27RSU-41
PR-3, "
NVH Troubleshooting Chart
"
RFD-5, "
NVH Troubleshooting Chart
"
FAX -4, "
NVH Troubleshooting Chart
" (FAX)
FSU-4, "
NVH Troubleshooting Chart
" (FSU)
WT-3, "
NVH Troubleshooting Chart
"
WT-3, "
NVH Troubleshooting Chart
"
RAX-4, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
BR-5, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Shock absorber deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer bar fatigue
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
SymptomNoise×××××× ××× ×××××
Shake×××× × × × ×××××
Vibration××××× × × × × ×
Shimmy×××× × × ×× ××
Shudder ××× × ×× ××
Poor quality ride or handling××××× ×× × ××

REAR SUSPENSION ASSEMBLY
RSU-27
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RSU
Revision: August 20072004 QX56
Wheel Alignment InspectionEES0011H
Rear Wheel Alignment Adjusting Bolts
PRELIMINARY INSPECTION
WA RN ING:
Always adjust the alignment with the vehicle on a flat surface. Use CONSULT-II "EXHAUST SOLE-
NOID" active test to release the air pressure from the rear load leveling air suspension system.
NOTE:
If alignment is out of specification, inspect and replace any damaged or worn rear suspension parts before
making any adjustments.
1. Check and adjust the wheel alignment with the vehicle under unladen conditions. “Unladen conditions”
means that the fuel, coolant, and lubricant are full; and that the spare tire, jack, hand tools and mats are in
their designated positions.
2. Check the tires for incorrect air pressure and excessive wear.
3. Check the wheels for runout and damage. Refer to WT-4, "
Inspection" .
4. Check the wheel bearing axial end play.
5. Check the shock absorbers. Refer to RSU-26, "
SHOCK ABSORBER INSPECTION" .
6. Check each mounting point of the suspension components for any excessive looseness or damage.
7. Check each link, arm, and the rear suspension member for any damage.
8. Check the vehicle height. Refer to RSU-48, "
Wheelarch Height (Unladen*1 )" .

Verify the vehicle height using Consult-II memory register 1103 and set to 0 ± 10 mm (0 ± 0.39 in) as
necessary.
GENERAL INFORMATION AND RECOMMENDATIONS
1. A Four-Wheel Thrust Alignment should be performed.

This type of alignment is recommended for any NISSAN vehicle.

The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel
is centered.

The alignment machine itself should be capable of accepting any NISSAN vehicle.

The alignment machine should be checked to ensure that it is level.
2. Make sure the alignment machine is properly calibrated.

Your alignment machine should be regularly calibrated in order to give correct information.
WEIA0102E
1. Rear lower link adjusting bolt, LH 2. Front lower link adjusting bolt, LH 3. Front lower link adjusting bolt, RH
4. Rear lower link adjusting bolt, RH
Axial end play : 0 mm (0 in)

SE-1
SEAT
I BODY
CONTENTS
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SECTION SE
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Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Work ................................................ 3
PREPARATION ........................................................... 4
Special Service Tool ................................................. 4
Commercial Service Tool ......................................... 4
SQUEAK AND RATTLE TROUBLE DIAGNOSES ..... 5
Work Flow ................................................................ 5
CUSTOMER INTERVIEW ..................................... 5
DUPLICATE THE NOISE AND TEST DRIVE ....... 6
CHECK RELATED SERVICE BULLETINS ........... 6
LOCATE THE NOISE AND IDENTIFY THE
ROOT CAUSE ...................................................... 6
REPAIR THE CAUSE ........................................... 6
CONFIRM THE REPAIR ....................................... 7
Generic Squeak and Rattle Troubleshooting ........... 7
INSTRUMENT PANEL .......................................... 7
CENTER CONSOLE ............................................. 7
DOORS ................................................................. 7
TRUNK .................................................................. 8
SUNROOF/HEADLINER ....................................... 8
OVERHEAD CONSOLE (FRONT AND REAR) ..... 8
SEATS .................................................................. 8
UNDERHOOD ....................................................... 8
Diagnostic Worksheet .............................................. 9
AUTOMATIC DRIVE POSITIONER ...........................11
Component Parts And Harness Connector Location
....11
Manual Operation ................................................... 12
Automatic Operation .............................................. 12
System Description ................................................ 12
FAIL-SAFE MODE .............................................. 13
CANCEL OF FAIL-SAFE MODE ......................... 13
MEMORY STORING AND KEYFOB INTER-
LOCK STORING ................................................. 14
MEMORY OPERATION ...................................... 15
ENTRY OPERATION .......................................... 15
EXITING OPERATION ........................................ 15KEYFOB INTERLOCK OPERATION .................. 16
CAN Communication System Description .............. 16
Schematic ............................................................... 17
Wiring Diagram — AUT/DP — ............................... 19
Terminals and Reference Values for BCM .............. 29
Terminals and Reference Values for Driver Seat
Control Unit ............................................................. 29
Terminals and Reference Values for Automatic
Drive Positioner Control Unit .................................. 31
Work Flow ............................................................... 33
Preliminary Check .................................................. 34
SETTING CHANGE FUNCTION ......................... 34
POWER SUPPLY AND GROUND CIRCUIT
INSPECTION ...................................................... 34
CONSULT-II Function (AUTO DRIVE POS.) .......... 37
CONSULT-II INSPECTION PROCEDURE .......... 37
SELF-DIAGNOSIS RESULTS ............................. 39
DATA MONITOR ................................................. 40
ACTIVE TEST ..................................................... 41
CAN Communication Inspection Using CONSULT-
II (Self-Diagnosis) ................................................... 41
Symptom Chart ....................................................... 41
Sliding Motor Circuit Inspection .............................. 43
Reclining Motor LH Circuit Inspection .................... 44
Lifting Motor (Front) Circuit Inspection ................... 46
Lifting Motor (Rear) Circuit Inspection .................... 47
Pedal Adjusting Motor Circuit Inspection ................ 49
Mirror Motor LH Circuit Check ................................ 50
Mirror Motor RH Circuit Check ............................... 52
Steering Wheel Tilt Circuit Inspection ..................... 53
Sliding Sensor Circuit Inspection ............................ 55
Reclining Sensor Circuit Inspection ........................ 56
Lifting Sensor (Front) Circuit Inspection ................. 57
Lifting Sensor (Rear) Circuit Inspection .................. 58
Pedal Adjusting Sensor Circuit Inspection .............. 59
Mirror Sensor LH Circuit Check .............................. 60
Mirror Sensor RH Circuit Check ............................. 62
Steering Wheel Tilt Sensor Circuit Inspection ........ 64
Sliding Switch Circuit Inspection ............................. 66
Reclining Switch Inspection .................................... 67

SE-2Revision: August 20072004 QX56 Lifting Switch (Front) Circuit Inspection .................. 69
Lifting Switch (Rear) Circuit Inspection ................... 70
Power Seat Switch Ground Inspection ................... 71
Pedal Adjusting Switch Circuit Inspection .............. 72
Door Mirror Switch (Changeover Switch) Circuit
Check ..................................................................... 74
Door Mirror Switch (Mirror Switch) Circuit Check ... 75
Door Mirror Switch Ground Circuit Inspection ........ 76
Seat Memory Switch Circuit Inspection .................. 77
Seat Memory Indicator Lamp Circuit Inspection ..... 79
Door Mirror Sensor Power Supply and Ground Cir-
cuit inspection ......................................................... 80
A/T Device (Detent Switch) Circuit Inspection ........ 81
Steering Wheel Tilt Switch Circuit Inspection ......... 82
Front Door Switch LH Circuit Inspection ................. 84
UART Communication Line Circuit Inspection ........ 85
Removal and Installation ........................................ 87
POWER SEAT ........................................................... 88
Wiring Diagram — SEAT — for Passenger Seat .... 88
HEATED SEAT .......................................................... 89Description ..............................................................89
Schematic ...............................................................90
Wiring Diagram — HSEAT — .................................91
FRONT SEAT ............................................................96
Components ............................................................96
Removal and Installation .........................................99
REMOVAL ............................................................99
INSTALLATION ....................................................99
Disassembly and Assembly ....................................99
SEATBACK TRIM AND PAD ...............................99
REMOVAL OF SEATBACK ASSEMBLY ........... 101
INSTALLATION OF SEATBACK ASSEMBLY ... 101
SEAT CUSHION TRIM AND PAD ...................... 101
REAR SEAT ............................................................. 103
Removal and Installation ....................................... 103
SECOND ROW OUTBOARD ............................ 103
SECOND ROW CENTER .................................. 103
THIRD ROW ...................................................... 103
Disassembly and Assembly .................................. 105