INFINITI QX56 2011 Factory Service Manual

SQUEAK AND RATTLE TROUBLE DIAGNOSESRF-27
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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 items:
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 vehicle slowly on an undulating or rough road to stress the vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, che ck ASIST for Technical Service Bulletins (TSBs) related
to the 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, 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 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, resulting in the creation of 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 RF-28, "
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 loosening 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 Department for the latest parts information.
The following materials are contained in the NISSA N 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 (1.181 in) thick, 30 ×50 mm (1.181 ×1.969in)
FELT CLOTHTAPE
Used to insulate where movement does not occur. Ideal for instrument panel applications.
 68370-4B000: 15 ×25 mm (0.591 ×0.984 in) pad
 68239-13E00: 5 mm (0.197 in) wide tape roll
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SQUEAK AND RATTLE TROUBLE DIAGNOSES
The following materials, 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 is visible or does not fit. Only lasts a few months.
SILICONE SPRAY
Used when grease cannot be applied.
DUCT TAPE
Used to eliminate movement.
CONFIRM THE REPAIR
After repair is complete, test drive the vehicle to confir m that the cause of 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.
Inspection ProcedureINFOID:0000000006367804
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
applying felt cloth tape or silicon spray (in hard to reach areas). Urethane pads can be used to insulate
wiring harness.
CAUTION:
Never use silicone spray to isolate a squeak or ra ttle. If the area is saturated with silicone, the
recheck of repair becomes impossible.
CENTER CONSOLE
Components to check 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 pr ocedures also apply to the center console.
DOORS
Check the following items:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon connection to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping, moving the components, or pressing on them wh ile driving to duplicate the conditions can isolate
many of these incidents. The areas can usually be insula ted with felt cloth tape or insulator foam blocks from
the NISSAN Squeak and Rattle Kit (J-43980) to repair the noise.
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the customer.
In addition check for the following items:
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
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SQUEAK AND RATTLE TROUBLE DIAGNOSESRF-29
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3. Trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, se curing, or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof / headlining area can of ten 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 the 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 c an usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
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SQUEAK AND RATTLE TROUBLE DIAGNOSES
Diagnostic Worksheet
INFOID:0000000006367805
PIIB8741E
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PIIB8742E
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RF-32
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GLASS LID
REMOVAL AND INSTALLATION
GLASS LID
Exploded ViewINFOID:0000000006141245
1. Glass lid 2. TORX bolt 3. Side trim
4. Rear drain connector 5. Rear drain hose 6. Sunroof bracket (LH,RH)
7. Front drain hose 8. Front drain connector 9. Sunroof motor assembly
10. Sunroof unit assembly
JMKIA5212ZZ
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GLASS LIDRF-33
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Removal and InstallationINFOID:0000000006141246
CAUTION:
 Always work with a helper.
 Fully close the glass lid, before removal, th en never operate sunroof motor after removal.
REMOVAL
1. Remove the side trims (LH, RH).
2. Remove the TORX bolts (A) and remove glass lid.
INSTALLATION
CAUTION:
After installing the glass lid, perform the leak test and check the there is no malfunction.
NOTE:
After installation carry out fitting adjustment. Refer to RF-33, "
Adjustment".
Install in the reverse order of removal.
AdjustmentINFOID:0000000006141247
Glass lid Adjustment and Surface Mismatch Adjustment
1. Remove side trims.
2. After loosening glass lid from TORX bolts (left and right).
3. Adjust glass lid from outside of vehicle so it resembles “A – A”,“B – B”“C – C”.
JMKIA0029ZZ
JMKIA5137ZZ
1. Roof panel 2. Glass lid
Portion a (Clearance) b (S urface height difference)
A – A 0.6 – 2.2 mm (0.024 – 0.087 in) −
1.5) – (+1.5) mm
[( −0.059) – (+0.059) in]
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RF-34
< REMOVAL AND INSTALLATION >
GLASS LID
4. To prevent glass lid from moving after adjustment, first tighten the TORX bolts of front left, and then
tighten the TORX bolts of rear right.
5. Tighten remaining TORX bolts, being careful to prevent glass lid from moving.
6. Tilt glass lid up and down several times to check that it moves smoothly.
NOTE:
After adjustment the sunroof unit assembly, perform additional service. Refer to RF-17, "
ADDITIONAL SER-
VICE WHEN REPLACING CONTROL UNIT : Description".
B – B 0.6 – 2.2 mm (0.024 – 0.087 in)
−
1.5) – (+1.5) mm
[( −0.059) – (+0.059) in]
C – C 0.6 – 2.2 mm (0.024 – 0.087 in) −
1.5) – (+1.5) mm
[( −0.059) – (+0.059) in]
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SUNROOF MOTOR ASSEMBLYRF-35
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SUNROOF MOTOR ASSEMBLY
Exploded ViewINFOID:0000000006141248
1. Glass lid 2. TORX bolt 3. Side trim
4. Rear drain connector 5. Rear drain hose 6. Sunroof bracket (LH,RH)
7. Front drain hose 8. Front drain connector 9. Sunroof motor assembly
10. Sunroof unit assembly
JMKIA5212ZZ
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RF-36
< REMOVAL AND INSTALLATION >
SUNROOF MOTOR ASSEMBLY
Removal and Installation
INFOID:0000000006141249
REMOVAL
CAUTION:
 Before removing sunroof motor, ch eck that glass lid is fully closed.
 After removing sunroof motor, never attempt to rotate sunroof motor assembly as a single unit.
1. Remove the headlining. Refer to INT-29, "
Removal and Installation".
2. Disconnect connector from sunroof motor assembly.
3. Remove sunroof motor assembly mounting screws, and then remove sunroof motor assembly.
INSTALLATION
CAUTION:
Before installing the sunroof motor assembly, be su re to the place the link and wire assembly in the
symmetrical and full y closed position.
1. Move the sunroof motor assembly laterally by littl e so that the gear is completely engaged into the wire on
the sunroof unit assembly and mounting surface bec omes parallel. Then secure the sunroof motor
assembly with screw.
2. Install the headlining. Refer to INT-29, "
Removal and Installation".
Revision: 2010 May2011 QX56