2004 INFINITI QX56 Ins

SC-26
CHARGING SYSTEM
Revision: August 20072004 QX56
DIAGNOSTIC PROCEDURE 5
Check Terminal "4" Circuit
1. CHECK “4” TERMINAL CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if “4” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “4” terminal connection. Confirm repair by performing complete Battery/Starting/Charging
system test.
2. CHECK GENERATOR “4” TERMINAL CIRCUIT
Check voltage between generator connector E205 terminal 4 (Y/B)
and ground using a digital circuit tester.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

10A fuse (No. 30, located in fuse and fusible link box)

Harness for open or short between generator and
fuse
3. CHECK “4” TERMINAL CONNECTION QUALITY (VOLTAGE DROP TEST)
1. Start the engine.
2. Check voltage between generator connector E205 terminal 4 (Y/
B) and battery positive terminal using a digital circuit tester.
OK or NG
OK >> Replace the generator. Refer to SC-27, "Removal and
Installation" . Confirm repair by performing complete
Battery/Starting/Charging system test.
NG >> Check harness between the battery and the generator
for poor continuity. Battery voltage should exist.
WKIA2113E
With engine running
at idle and warm.: Less than 0.2V
WKIA2114E

CHARGING SYSTEM
SC-27
C
D
E
F
G
H
I
J
L
MA
B
SC
Revision: August 20072004 QX56
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate “CHARGE” warning lamp, if any of the following
symptoms occur while generator is operating:

Excessive voltage is produced.

No voltage is produced.
Removal and InstallationEKS0079H
REMOVAL
1. Disconnect the negative battery terminal.
2. Remove the fan shroud. Refer to CO-10, "
Removal and Installation" .
3. Remove the drive belt. Refer to EM-12, "
Removal and Installation" .
4. Remove the lower bracket, using power tools.
5. Remove the generator upper bolt, using power tools.
6. Disconnect the generator harness connectors.
7. Remove the generator.
INSTALLATION
Installation is in the reverse order of removal.

Install the generator and check the tension of the drive belt. Refer to EM-12, "Tension Adjustment" .
CAUTION:
Tighten terminal "1" nut carefully.
WKIA1390E
Terminal "1" nut : 10.8 N·m (1.1 kg-m, 8 ft-lb)

SE-1
SEAT
I BODY
CONTENTS
C
D
E
F
G
H
J
K
L
M
SECTION SE
A
B
SE
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

PRECAUTIONS
SE-3
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: August 20072004 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EIS002XX
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.
WA RN ING:

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.
Precautions for WorkEIS002XY

When removing or disassembling each component, be careful not to damage or deform it. If a component
may be subject to interference, be sure to protect it with a shop cloth.

When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the compo-
nent with a shop cloth or vinyl tape to protect it.

Protect the removed parts with a shop cloth and keep them.

Replace a deformed or damaged clip.

If a part is specified as a non-reusable part, always replace it with new one.

Be sure to tighten bolts and nuts securely to the specified torque.

After re-installation is completed, be sure to check that each part works normally.

Follow the steps below to clean components.
–Water soluble foul: Dip a soft cloth into lukewarm water, and wring the water out of the cloth to wipe the
fouled area.
Then rub with a soft and dry cloth.
–Oily foul: Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%), and wipe
the fouled area.
Then dip a cloth into fresh water, and wring the water out of the cloth to wipe the detergent off. Then rub
with a soft and dry cloth.

Do not use organic solvent such as thinner, benzene, alcohol, or gasoline.

For genuine leather seats, use a genuine leather seat cleaner.

SE-6
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: August 20072004 QX56
DUPLICATE THE NOISE AND TEST DRIVE
If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or location of the noise. This information can be used to
duplicate the same conditions when you confirm the repair.
If the noise can be duplicated easily during the test drive, to help identify the source of the noise, try to dupli-
cate the noise with the vehicle stopped by doing one or all of the following:
1) Close a door.
2) Tap or push/pull around the area where the noise appears to be coming from.
3) Rev the engine.
4) Use a floor jack to recreate vehicle "twist".
5) At idle, apply engine load (electrical load, half-clutch on M/T model, drive position on A/T model).
6) Raise the vehicle on a hoist and hit a tire with a rubber hammer.

Drive the vehicle and attempt to duplicate the conditions the customer states exist when the noise occurs.

If it is difficult to duplicate the noise, drive the vehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, check ASIST for Technical Service Bulletins (TSBs) related
to that concern or symptom.
If a TSB relates to the symptom, follow the procedure to repair the noise.
LOCATE THE NOISE AND IDENTIFY THE ROOT CAUSE
1. Narrow down the noise to a general area.To help pinpoint the source of the noise, use a listening tool
(Chassis Ear: J-39570, Engine Ear: J-39565 and mechanic's stethoscope).
2. Narrow down the noise to a more specific area and identify the cause of the noise by:

removing the components in the area that you suspect the noise is coming from.
Do not use too much force when removing clips and fasteners, otherwise clips and fasteners can be bro-
ken or lost during the repair, resulting in the creation of new noise.

tapping or pushing/pulling the component that you suspect is causing the noise.
Do not tap or push/pull the component with excessive force, otherwise the noise will be eliminated only
temporarily.

feeling for a vibration with your hand by touching the component(s) that you suspect is (are) causing the
noise.

placing a piece of paper between components that you suspect are causing the noise.

looking for loose components and contact marks.
Refer to SE-7, "
Generic Squeak and Rattle Troubleshooting" .
REPAIR THE CAUSE

If the cause is a loose component, tighten the component securely.

If the cause is insufficient clearance between components:
–separate components by repositioning or loosening and retightening the component, if possible.
–insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape or ure-
thane tape. A NISSAN Squeak and Rattle Kit (J-43980) is available through your authorized Nissan Parts
Department.
CAUTION:
Do not use excessive force as many components are constructed of plastic and may be damaged.
Always check with the Parts Department for the latest parts information.
The following materials are contained in the NISSAN Squeak and Rattle Kit (J-43980). Each item can be
ordered separately as needed.
URETHANE PADS [1.5 mm (0.059 in) thick]
Insulates connectors, harness, etc.
76268-9E005: 100×135 mm (3.94×5.31 in)/76884-71L01: 60×85 mm (2.36×3.35 in)/76884-71L02: 15×25
mm (0.59×0.98 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
73982-9E000: 45 mm (1.77 in) thick, 50×50 mm (1.97×1.97 in)/73982-50Y00: 10 mm (0.39 in) thick,
50×50 mm (1.97×1.97 in)
INSULATOR (Light foam block)

SQUEAK AND RATTLE TROUBLE DIAGNOSES
SE-7
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: August 20072004 QX56
80845-71L00: 30 mm (1.18 in) thick, 30×50 mm (1.18×1.97 in)
FELT CLOTH TAPE
Used to insulate where movement does not occur. Ideal for instrument panel applications.
68370-4B000: 15×25 mm (0.59×0.98 in) pad/68239-13E00: 5 mm (0.20 in) wide tape roll. The following mate-
rials, not found in the kit can also be used to repair squeaks and rattles.
UHMW (TEFLON) TAPE
Insulates where slight movement is present. Ideal for instrument panel applications.
SILICONE GREASE
Used in place of UHMW tape that will be visible or not fit.
Note: Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingEIS002Y2
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel mounting pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noise. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or rattle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation procedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping or moving the components or pressing on them while driving to duplicate the conditions can isolate
many of these incidents. You can usually insulate the areas with felt cloth tape or insulator foam blocks from
the NISSAN Squeak and Rattle Kit (J-43980) to repair the noise.

SE-8
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: August 20072004 QX56
TRU NK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid bumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINER
Noises in the sunroof/headliner area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headliner and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
OVERHEAD CONSOLE (FRONT AND REAR)
Overhead console noises are often caused by the console panel clips not being engaged correctly. Most of
these incidents are repaired by pushing up on the console at the clip locations until the clips engage.
In addition look for:
1. Loose harness or harness connectors.
2. Front console map/reading lamp lense loose.
3. Loose screws at console attachment points.
SEATS
When isolating seat noise it is important to note the position the seat is in and the load placed on the seat
when the noise is present. These conditions should be duplicated when verifying and isolating the cause of
the noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.