ECU INFINITI QX4 2005 Factory Service Manual

POWER STEERING GEAR AND LINKAGE
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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 AssemblyEGS000UI
CAUTION:

Secure steering gear assembly with a vise, using copper plates or something similar to prevent it
from being damaged. Do not grip cylinder with a vise.

Before performing disassembly, clean steering gear assembly with kerosene. Be careful not to
bring any kerosene into contact with the discharge and return port connectors.
DISASSEMBLY
1. Remove cylinder tubes from gear housing assembly.
2. Remove rear cover cap from gear housing assembly.
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

POWER STEERING GEAR AND LINKAGE
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21. Install new boot clamps and crimp securely.
CAUTION:
Do not reuse boot clamps.
22. Install cylinder tubes to gear housing assembly.
23. Install lock nut and outer socket to inner socket.
24. Tighten lightly tie-rod in specified length “L”, then tighten lock nut
at specified torque. Refer to PS-17, "
Disassembly and Assem-
bly" . Reconfirm if tie-rod length is within limit of specified length
“L”.
CAUTION:
Perform toe-in adjustment after this procedure. Length
achieved after toe-in adjustment is not necessarily the
value given here.
AST 1 39
Inner socket length “L” : 115.2 mm (4.54 in)
SGIA0167E

REAR DRIVE SHAFT
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4. Install the ball cage, steel ball, and inner race assembly on the
shaft, and secure them tightly using the snap ring.
NOTE:
Discard the old snap ring and use a new one for assembly.
5. Insert the specified quantity of Genuine NISSAN Grease or
equivalent, onto the housing (indicated by * marks), and install it
onto shaft. Refer to GI-45, "
Recommended Chemical Products
and Sealants" .
6. Install the stopper ring onto the housing.
7. After installation, pull on the shaft to check engagement between the joint sub-assembly and the stopper
ring.
8. Install the boot securely into the grooves (indicated by * marks)
as shown.
CAUTION:
If there is grease on boot mounting surfaces (indicated by*
marks) of shaft and housing, boot may come off. Remove
all grease from surfaces.
9. Check that the boot installation length “L” is the specified length.
Insert a flat-bladed screwdriver or similar tool into bigger side of
boot. Bleed the air from the boot to prevent any boot deforma-
tion.
CAUTION:

The boot may break if the boot installation length is less than the specified length.

Do not touch the tip of the screwdriver to the inside of the boot.
10. Secure the big and small ends of the boot with the new boot
bands as shown.
NOTE:
Discard the old boot bands and use new ones for assembly.
11. After installing the housing and shaft, rotate the boot to check that the boot is positioned correctly. If the
boot is not positioned correctly, reposition the boot and secure the boot using a new boot band.
SDIA11 25 E
Grease capacity : 175 − 195 g (6.17 − 6.88 oz)
RAC0678D
Boot installation length “L ” : 147.9 mm (5.82 in)WDIA0287E
SFA39 5

RAX-12
REAR DRIVE SHAFT
Revision: October 20052005 QX56
Wheel Side
1. Insert the Genuine NISSAN Grease or equivalent, into the joint
sub-assembly serration hole until the grease begins to ooze
from the ball groove and serration hole. Refer to GI-45, "
Recom-
mended Chemical Products and Sealants" . After inserting the
grease, use a shop cloth to wipe off the grease that has oozed
out.
2. Wind the serrated part of the shaft with tape. Install the boot
band and boot onto the shaft. Do not damage the boot.
NOTE:
Discard the old boot band and boot and use a new one for
assembly.
3. Remove the protective tape wound around the serrated part of
the shaft.
4. Attach the circlip to the shaft. The circlip must fit securely into
the shaft groove. Attach the nut to the joint sub-assembly.
Use a soft hammer to press-fit the circlip.
NOTE:
Discard the old circlip and use a new one for assembly.
5. Insert the specified quantity of Genuine NISSAN Grease or
equivalent, into the housing from the large end of the boot. Refer
to GI-45, "
Recommended Chemical Products and Sealants" .
6. Install the boot securely into the grooves (indicated by the *
marks) as shown.
CAUTION:
If there is grease on the boot mounting surfaces (indicated
by the * marks) of the shaft and housing, the boot may
come off. Remove all grease from the shaft surfaces.
7. Check that the boot installation length “L” is the specified length.
Insert a flat-bladed screwdriver or similar tool into the bigger
side of the boot. Bleed the air from the boot to prevent boot
deformation.
CAUTION:

The boot may break if the boot installation length is less than the specified length.

Do not contact inside surface of boot with the tip of the screwdriver.
SDIA11 27 E
SFA80 0
Grease capacity : 140 − 160 g (4.93 − 5.64 oz)
RAC0049D
Boot installation length “L” : 134.5 mm (5.30 in)WDIA0288E

REAR DRIVE SHAFT
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8. Secure the big and small ends of the boot using new boot bands
as shown.
NOTE:
Discard the old boot bands and use new ones for assembly.
9. After installing the joint sub-assembly and shaft, rotate the boot to check that it is positioned correctly. If
the boot is not positioned correctly, reposition the boot and secure the boot using a new boot band.
SFA39 5

SQUEAK AND RATTLE TROUBLE DIAGNOSES
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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 fastener can be broken
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 RF-6, "
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)

SQUEAK AND RATTLE TROUBLE DIAGNOSES
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TRUNK
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/HEADLINING
Noises in the sunroof/headlining 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. Sun visor 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 lens loose.
3. Loose screws at console attachment points.
SEATS
When isolating seat noise it's 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.

RF-16
SUNROOF
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CONSULT-II Function (BCM)EIS004VW
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2. Touch "START (NISSAN BASED VHCL)".
3. Touch "BCM".
If "BCM" is not indicated, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnostic
test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received 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.
BBIA0369E
BCIA0029E
BCIA0030E

SUNROOF
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Fitting AdjustmentEIS004W5
GAP ADJUSTMENT
NOTE:
If any gap or height difference between glass lid and roof panel is found, check glass lid fit and adjust as fol-
lows:
1. Open sunshade assembly.
2. Loosen glass lid securing screws (2 each on left and right sides), then tilt glass lid down.
3. Manually adjust glass lid from outside of vehicle so it resembles "A-A" as shown in the figure.
4. After adjusting glass lid tilt glass lid up and tighten screws.
5. Tilt glass lid up and down several times to check that it moves smoothly.
HEIGHT DIFFERENCE ADJUSTMENT
1. Remove headlining. Refer to EI-38, "HEADLINING" .
2. Loosen sunroof frame assembly nuts and sunroof bracket bolts.
3. Add shims until gap is within specification "A-A" as shown.
NOTE:
Temporarily snug nuts and bolts to prevent movement between each adjustment.
4. Tilt glass lid assembly up and down several times to check that it moves and seals properly.
5. Tighten sunroof frame assembly nuts and sunroof bracket bolts.
NOTE:
First tighten left front then right rear sunroof frame assembly nuts to prevent uneven torque while tighten-
ing sunroof bracket bolts.
6. Install headlining. Refer to EI-38, "
HEADLINING" .
Removal and InstallationEIS008ZM

After any adjustment, check sunroof operation and glass lid alignment.

Handle glass lid with care so not to cause damage.

For easier installation, mark each point before removal.
WIIA0237E

RF-26
SUNROOF
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SUNROOF UNIT
Removal
CAUTION:

Always work with a helper.

When taking sunroof unit out, use shop cloths to protect the seats and trim from damage.

After installing the sunroof unit and glass lid, be sure to check gap adjustment to ensure there is
no malfunction.
1. Remove headlining. Refer to EI-38, "
HEADLINING" .
2. Remove the sunroof glass lid. Refer to RF-26, "
GLASS LID" .
3. Remove overhead console bracket.
4. Disconnect the drain hoses.
5. Remove front sunroof bolts.
6. Remove rear sunroof bracket bolts.
7. Remove the side bolts and the sunroof unit.
Installation
1. Position the sunroof frame assembly and install the side bolts.
2. Install the rear brackets.
3. Install the front mounting bolts.
4. Connect drain hoses.
5. Install the overhead console bracket.
6. Install the sunroof glass lid. Refer to RF-26, "
GLASS LID" .
7. Install headlining. Refer to EI-38, "
HEADLINING" .
GLASS LID
Removal
1. Open sunshade.
2. Ensure glass lid is closed.
3. Remove side cover LH and RH.
4. Remove the screws securing glass lid to the sunroof frame
assembly.
5. Remove the glass lid assembly.
Installation
1. Position glass lid to sunroof assembly.
2. Install the glass lid assembly screws. (First tighten left front bolt, then tighten right rear bolt on glass lid to
prevent lid from moving while tightening other bolts.)
3. Adjust the sunroof glass. Refer to RF-23, "
Fitting Adjustment" .
4. Install side cover LH and RH.
WIND DEFLECTOR
Removal
1. Open the sunroof.
7. Front drain hoses 8. Sunroof motor assembly 9. Sunroof frame assembly
10. Overhead console bracket 11. Side cover LH 12. Side cover RH
WIIA0252E