ECU INFINITI QX56 2011 Factory Service Manual

INT-8
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
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 lo cation of the noise. This information can be used to
duplicate the same conditions when the repair is reconfirmed.
If the noise can be duplicated easily during the test dr ive, do the following with the vehicle stopped to help
identify the source of the noise.
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-cl utch on M/T models, drive position on A/T models).
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 v ehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, chec k ASIST for Technical Service Bulletins (TSBs) related
to the concern or symptom.
If a TSB relates to the symptom, follo w 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 pi npoint the source of the noise, use a listening tool
(Chassis ear: J-39570, engine ear, and mechanics stethoscope).
2. Narrow down the noise to a more specific area and identify the cause of the noise by:
 Removing the component(s) in the area(s) that is / are suspected to be the cause of the noise.
Do not use too much force when removing clips and fasteners, otherwise clips and fasteners can be broken
or lost during the repair, creating a new noise.
 Tapping or pushing/pulling the component(s) that is / are suspected to be the cause of the noise.
Do not tap or push/pull the component(s) with excessive force, otherwise the noise is eliminated only tempo-
rarily.
 Feeling for a vibration by hand by touching the component(s ) that is / are suspected to be the cause of the
noise.
 Placing a piece of paper between components that are suspected to be the cause of the noise.
 Looking for loose components and contact marks. Refer to INT-9, "
Inspection Procedure".
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 loos ening and retightening the components, 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 the authorized NISSAN Parts
Department.
CAUTION:
Never use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
Always check with the Parts Departm ent 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 (3.937 ×5.315 in)
 76884-71L01: 60 ×85 mm (2.362 ×3.346 in)
 76884-71L02: 15 ×25 mm (0.591 ×0.984 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
 73982-9E000: 45 mm (1.772 in) thick, 50 ×50 mm (1.969 ×1.969 in)
 73982-50Y00: 10 mm (0.394 in) thick, 50 ×50 mm (1.969 ×1.969 in)
INSULATOR (Light foam block)
80845-71L00: 30 mm (1.18 in) thick, 30 ×50 mm (1.181 ×1.969in)
FELT CLOTHTAPE
Revision: 2010 May2011 QX56

INT-10
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. 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 items:
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 headlining 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.
SEATS
When isolating seat noise it is important to note t he position the seat is in and the load placed on the seat
when the noise occurs. These conditions should be duplic ated when verifying and isolating the cause of the
noise.
Causes 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 thes e 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.
Revision: 2010 May2011 QX56

FRONT DOOR FINISHERINT-15
< REMOVAL AND INSTALLATION >
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 Seat memory switch. Refer to ADP-137, "Removal and Installation".
 Front door inside handle. Refer to DLK-241, "
INSIDE HANDLE : Removal and Installation".
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Visually check the clips, pawls an d metal clip for deformation and damage during installation.
Replace with new ones if necessary.
 When installing fron t door finisher, check that clips, pawls and metal clip are securely fitted in body
panel holes, and press them in.
Revision: 2010 May2011 QX56

REAR DOOR FINISHERINT-17
< REMOVAL AND INSTALLATION >
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REMOVAL
1. Fully open door window.
2. Remove door finisher cap (1) using a small flat-bladed screw- driver (A) as shown by the arrow in the figure, and then remove
rear door finisher mounting bolt.
CAUTION:
Use a small flat-bladed screwdriver wrapped in tape (B).
3. Insert a remover tool (A) between rear door grip cap (1) and rear door grip to disengage rear door grip cap fixing pawls as shown
by the arrow in the figure, and then remove fixing screws.
4. Remove step lamp, and then disconnect step lamp harness connector. Refer to INL-74, "
Removal and
Installation".
5. Remove bumper rubber.
6. Insert a remover tool (A) between rear door finisher and rear door panel to disengage the clips as shown by the arrow in the
figure.
CAUTION:
Insert a remover tool into the part shown in the figure
(between the clips and the door panel).
7. Disconnect mood lamp harness connector.
8. Disconnect power window switch harness connector and clamp.
9. Disconnect lock knob cable and inside handle cable from rear inside handle.
10. Remove rear door finisher from rear door panel.
11. Remove the following parts after removing rear door finisher.  Mood lamp.
 Power window switch. Refer to PWC-74, "
Removal and Installation".
 Rear door inside handle. Refer to DLK-244, "
INSIDE HANDLE : Removal and Installation".
 Rear door tweeter. Refer to AV-218, "
Removal and Installation".
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Visualy check the clips and pawls for deformation and damage during installation. Replace with new
ones if necessary.
 When installing rear door finish er, check that clips and pawls are secu rely fitted in body panel holes,
and press them in.
: Pawl
JMJIA4013ZZ
: Pawl
JMJIA4016ZZ
: Clip
JMJIA4017ZZ
Revision: 2010 May2011 QX56

BODY SIDE TRIMINT-19
< REMOVAL AND INSTALLATION >
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3. Disengage dash side finisher (1) fixing clips (A) using a remover tool (B) as shown by the arrow in the figure, and then remove
dash side finisher.
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Visually check the clips for deformation and dama ge during installation. Replace with new ones if
necessary.
 When installing dash si de finisher, check that clips are securely fitted in body panel holes, and press
clips in.
FRONT PILLAR GARNISH
FRONT PILLAR GARNISH : Removal and InstallationINFOID:0000000006220247
CAUTION:
 When removing, always use a remover tool that is made of plastic.
 Never damage the body.
REMOVAL
1. Release front pillar garnish portion of front body side welt.
2. Disengage assist grip cap (1) fixing pawls using a flat-bladed screwdriver (A) as shown in the figure, and then remove assist
grip mounting bolts and assist grip (2).
CAUTION:
Apply protective tape (B) to the assist grip to protect from
damage.
3. Disengage front pillar garnish (1) fixing clip and metal clip using a remover tool (A) as shown by the arrow in the figure, and then
remove front pillar garnish.
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Visually check the clip, pawls a nd metal clip for deformation and damage during installation.
Replace with new ones if necessary.
 When installing front pillar garn ish, check that clip and metal clip are securely fitted in body panel
holes, and press them in.
: Clip
JMJIA4020ZZ
: Pawl
JMJIA4018ZZ
: Clip
: Metal clip
JMJIA4019ZZ
Revision: 2010 May2011 QX56

BODY SIDE TRIMINT-21
< REMOVAL AND INSTALLATION >
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Apply protective tape (B) to the body panel to protect from damage.
2. Remove rear side bracket.
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Visually check the pawls and metal clips for defo rmation and damage during installation. Replace
with new ones if necessary.
 When installing front ki cking plate inner and rear kicking plat e inner, check that pawls and metal
clips are securely fitted in body panel holes, and press them in.
KICKING PLATE OUTER
KICKING PLATE OUTER : Removal and InstallationINFOID:0000000006220250
CAUTION:
 When removing, always use a remover tool that is made of plastic.
 Never damage the body.
REMOVAL
Front kicking plate outer
Disengage front kicking plate outer fixing pawls using a remover tool
(A) as shown by the arrow in the figure, and then remove front kick-
ing plate outer (1).
CAUTION:
Apply protective tape (B) to the body panel to protect from dam-
age.
Rear kicking plate outer
Disengage rear kicking plate outer fixing pawls using a remover tool
(A) as shown by the arrow in the figure, and then remove rear kick-
ing plate outer (1).
CAUTION:
Apply protective tape (B) to the body panel to protect from dam-
age.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
: Pawl
JMJIA4023ZZ
: Pawl
JMJIA4022ZZ
: Pawl
JMJIA4024ZZ
Revision: 2010 May2011 QX56

INT-22
< REMOVAL AND INSTALLATION >
BODY SIDE TRIM
CAUTION:
 Visually check the pawls for deformation and damage during installation. Replace with new ones if
necessary.
 When installing front kicking pl ate outer and rear kicking plate outer, check that pawls are securely
fitted in body panel ho les, and press them in.
CENTER PILLAR LOWER GARNISH
CENTER PILLAR LOWER GARNISH : Removal and InstallationINFOID:0000000006220251
CAUTION:
Never damage the body.
REMOVAL
1. Remove front kicking plate inner and rear kicking plate inner. Refer to INT-20, "KICKING PLATE INNER :
Removal and Installation".
2. Slide front seat assembly to the frontmost position.
3. Remove seat belt outer anchor. Refer to SB-6, "
SEAT BELT RETRACTOR : Removal and Installation".
4. Disengage center pillar lower garnish fixing clips.
5. Remove center pillar lower garnish according to the order of the arrows shown in the figure.
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Visually check the clips for deformation and dama ge during installation. Replace with new ones if
necessary.
 When installing center pillar lowe r garnish, check that clips are secu rely fitted in body panel holes,
and press them in.
CENTER PILLAR UPPER GARNISH
CENTER PILLAR UPPER GARNISH : Removal and InstallationINFOID:0000000006220252
CAUTION:
 When removing, always use a remover tool that is made of plastic.
 Never damage the body.
REMOVAL
1. Remove front kicking plate inner and rear kicking plate inner. Refer to INT-20, "KICKING PLATE INNER :
Removal and Installation".
2. Slide front seat assembly to the frontmost position.
3. Remove center pillar lower garnish. Refer to INT-22, "
CENTER PILLAR LOWER GARNISH : Removal
and Installation".
: Clip
JMJIA4025ZZ
Revision: 2010 May2011 QX56

BODY SIDE TRIMINT-23
< REMOVAL AND INSTALLATION >
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4. Disengage center pillar upper garnish lower side fixing clip using a remover tool (A).
5. Pull center pillar upper garnish (1) from inside passenger room, disengage center pillar upper garnish upper side fixing pawl as shown in the following figur e, and then remove center pillar upper garnish from
center pillar panel (2).
CAUTION:
Be careful not to apply excessive force when remo ving center pillar upper garnish. Otherwise,
pawl may be damaged and fragments may drop in panel holes on body.
6. Remove assist grip mounting bolts, and then remove assist grip.
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Replace center pillar upper garnish with a new part after removal. Never reuse center pillar upper
garnish.
 Visually check the clip and pawl for deformation an d damage during installation. Replace with new
ones if necessary.
 When installing center pill ar upper garnish, check that clip and pawl are securely fitted in body panel
holes, and press them in.
: Clip
: Pawl
JMJIA4026ZZ
JMJIA1176ZZ
Revision: 2010 May2011 QX56

LUGGAGE FLOOR TRIMINT-35
< REMOVAL AND INSTALLATION >
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3. Disengage luggage floor board RH (1) fixing pawls and clips, and then remove luggage side finisher.
4. Disengage luggage floor board LH (2) fixing pawls and clips,
and then remove luggage side finisher.
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Visually check the clips and pawls for deformation and damage during installation. Replace with new
ones if necessary.
 When installing luggage floor rear board, check that clips and pawls are securely fitted in body panel
holes, and press them in.
LUGGAGE REAR PLATE
LUGGAGE REAR PLATE : Removal and InstallationINFOID:0000000006220260
REMOVAL
1. Open luggage floor board center.
2. Remove luggage floor finishers (LH and RH).
1. Remove nuts shown by the arrows in the figure.
2. Disengage luggage floor finisher (1) fixing clip and pawl
using a remover tool (A), and then remove luggage side fin-
isher.
3. Disengage luggage rear plate (1) fixing clips and pawls using a remover tool (A), and then remove luggage rear plate.
4. Remove luggage rear plate mask from luggage rear plate.
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Visually check the clips and pawls for deformation and damage during installation. Replace with new
ones if necessary.
 When installing luggage rear plate, check that cl ips and pawls are securely fitted in body panel
holes, and press them in.
: Clip
: Pawl
JMJIA4030ZZ
: Clip
: Pawl
JMJIA4028ZZ
: Clip
: Pawl
JMJIA4041ZZ
Revision: 2010 May2011 QX56

LUGGAGE FLOOR TRIMINT-37
< REMOVAL AND INSTALLATION >
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 Visually check the clips and pawls for deformation and damage during installation. Replace with new
ones if necessary.
 When installing luggage side lo wer finisher, check that clips and pawls are securely fitted in body
panel holes, and press them in.
REAR PILLAR FINISHER
REAR PILLAR FINISHER : Removal and InstallationINFOID:0000000006220262
REMOVAL
1. Remove luggage side lower finisher. INT-36, "LUGGAGE SIDE LOWER FINISHER : Removal and Instal-
lation".
2. Disengage lower side of rear pillar finisher fixing clip.
3. Pull rear pillar upper garnish (1) from inside passenger room, disengage rear pillar upper garnish upper side fixing pawl as shown in the following figure, and then remove rear pillar upper garnish from body
panel (2).
CAUTION:
Be careful not to apply excessive force when removing rear pillar finisher. Otherwise, pawl may be
damaged and fragments may drop in body panel holes on body.
INSTALLATION
Note the following items, and install in the reverse order of removal.
CAUTION:
 Replace rear pillar finisher wi th a new part after removal. Never reuse rear pillar finisher.
 Visually check the clip and pawl for deformation an d damage during installation. Replace with new
ones if necessary.
 When installing rear pillar finisher, check that cl ip and pawl are securely fitted in body panel holes,
and press them in.
BACK PILLAR GARNISH
BACK PILLAR GARNISH : Removal and InstallationINFOID:0000000006220263
REMOVAL
1. Remove luggage side lower finisher. INT-36, "LUGGAGE SIDE LOWER FINISHER : Removal and Instal-
lation".
2. Remove cap of back door finisher side (LH), and then remove stud ball. Refer to DLK-247, "
BACK DOOR
SUPPORT ROD : Removal and Installation" (LH side only).
3. Disengage back pillar garnish (1) fixing clips and pawl using a remover tool (A), and then remove back pillar garnish.
JMJIA1176ZZ
: Clip
: Pawl
JMJIA4045ZZ
Revision: 2010 May2011 QX56