ECU NISSAN TEANA 2008 Service Manual

SQUEAK AND RATTLE TROUBLE DIAGNOSES
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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 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. 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.

PRECAUTIONS
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 When replacing any metal parts (for example body outer panel, members, etc.), be sure to take rust preven-
tion measures.
Precaution for WorkINFOID:0000000003809272
 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 component
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.
 Never use organic solvent such as thinner, benzene, alcohol, and gasoline.
 For genuine leather seats, use a genuine leather seat cleaner.

SE-94
< ON-VEHICLE REPAIR >[WITH VENTILATION SEAT]
FRONT SEAT
 Disconnect the seatback heater unit harness connector (A).
 Remove the headrest holder.
CAUTION:
Before installing headrest holder, check its orientation
(front/rear and right/left).
 Remove the seatback trim and seatback pad from the seat frame assembly.
 Remove the hog rings to separate the seatback trim and seatback pad.
4. Remove the seatback silencer.
5. Remove the lumbar support unit.
 Remove the screws.
 Remove the lumbar support unit while pulling the seatback spring.
6. Remove the reclining device outer and inner cover.
Remove the screws, and then remove reclining device outer and inner cover.
Assembly
Assemble in the reverse order of disassembly.
CAUTION:
Install the hog rings of seatback trim in position, and then securely connect the trim or trim cord with
the pad side wire.
SEAT CUSHION
Disassembly
1. Remove the seat cushion outer finisher.
 Remove the screws (A).
 Remove the metal clips and pawls, and then pull out seat
cushion outer finisher.
 Disconnect the harness connector and remove harness clamp.
2. Remove the seat belt buckle. Refer to SB-7, "
SEAT BELT BUCKLE : Removal and Installation".
3. Remove the seat cushion inner finisher.
JMJIA1868ZZ
PIIB4084J
: Metal clip
: Pawl
JMJIA1871ZZ

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< ON-VEHICLE REPAIR >[WITH VENTILATION SEAT]
FRONT SEAT
 Disconnect the harness connector (B).
 Remove the bolts (C), and then remove the ottoman frame.
8. Remove the seat slide outer cover.
Remove the screws (A), and then remove seat slide outer cover.
9. Remove seat slide inner cover.
Remove the screw (A), and then remove seat slide inner cover.
10. Remove the seat cushion outer and inner finisher inside.
Remove the screw, and then remove the seat cushion outer and inner finisher inside.
11. Remove the driver seat control unit. (Automatic drive positioner model only) ADP-7, "
ADDITIONAL SER-
VICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : Special Repair Requirement".
Assembly
Assemble in the reverse order of disassembly.
CAUTION:
Install the hog rings of seat cushion trim in position, and then securely connect the trim or trim cord
with the pad side wire.
VENTILATION UNIT
Disassembly
1. Remove the seat cushion duct A and B.
JMJIA1960ZZ
JMJIA1874ZZ
JMJIA1873ZZ

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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 location 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 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.
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
(Engine Ear or mechanics 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 is are suspected to be the cause of the noise.
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 is are suspected to be the cause of the noise.
Do not tap or push/pull the component with excessive force, otherwise the noise will be eliminated only tem-
porarily.
 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 is are suspected to be the cause of the noise.
 Looking for loose components and contact marks.
Refer to SE-123, "
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 component, if possible.
- Insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape or ure-
thane tape. These insulators are available through the authorized Nissan Parts Department.
CAUTION:
Never use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
 URETHANE PADS
Insulates connectors, harness, etc.
 INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
 INSULATOR (Light foam block)
 FELT CLOTHTAPE
Used to insulate where movement does not occur. Ideal for instrument panel applications.
The following materials, not available through NISSAN Parts Department, 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 be visible or does not fit.
Note: Will only last a few months.
 SILICONE SPRAY
Used when grease cannot be applied.
 DUCT TAPE
Used to eliminate movement.
CONFIRM THE REPAIR

SQUEAK AND RATTLE TROUBLE DIAGNOSES
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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.
Inspection ProcedureINFOID:0000000003940141
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. 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 silicon spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Never use silicone spray to isolate a squeak or rattle. If the area is saturated with silicone, the recheck
of repair becomes impossible.
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 following:
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. The areas can usually be insulated with felt cloth tape or insulator foam blocks 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 look for the following:
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:
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

SE-124
< SYMPTOM DIAGNOSIS >[WITHOUT VENTILATION SEAT]
SQUEAK AND RATTLE TROUBLE DIAGNOSES
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 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. 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.

SE-128
< PRECAUTION >[WITHOUT VENTILATION SEAT]
PRECAUTIONS
 When replacing any metal parts (for example body outer panel, members, etc.), be sure to take rust preven-
tion measures.
Precaution for WorkINFOID:0000000003840020
 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 component
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.
 Never use organic solvent such as thinner, benzene, alcohol, and gasoline.
 For genuine leather seats, use a genuine leather seat cleaner.

FRONT SEAT
SE-137
< ON-VEHICLE REPAIR >[WITHOUT VENTILATION SEAT]
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 Disconnect the seatback heater unit harness connector (A).
 Remove the headrest holder.
CAUTION:
Before installing headrest holder, check its orientation
(front/rear and right/left).
 Remove the seatback trim and seatback pad from the seat frame assembly.
 Remove the hog rings to separate the seatback trim and seatback pad.
4. Remove the seatback silencer.
5. Remove the lumbar support unit. (With lumbar support model)
 Remove the screws.
 Remove the lumbar support unit while pulling the seatback spring.
6. Remove the reclining device outer and inner cover.
Remove the screws, and then remove reclining device outer and inner cover.
Assembly
Assemble in the reverse order of disassembly.
CAUTION:
Install the hog rings of seatback trim in position, and then securely connect the trim or trim cord with
the pad side wire.
SEAT CUSHION
Disassembly
1. Remove the seat cushion outer finisher.
a. Manual seat
 Remove the pawls, and then remove lifter lever knob finisher
(1).
 Remove the mounting screws, and remove lifter lever knob
(2).
JMJIA1868ZZ
PIIB4084J
: Pawl
JMJIA1869ZZ

FRONT SEAT
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< ON-VEHICLE REPAIR >[WITHOUT VENTILATION SEAT]
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Remove the screws (A), and then remove seat slide outer cover.
6. Remove seat slide inner cover.
Remove the screw (A), and then remove seat slide inner cover.
7. Remove the seat cushion outer and inner finisher inside.
Remove the screw, and then remove the seat cushion outer and inner finisher inside.
Assembly
Assemble in the reverse order of disassembly.
CAUTION:
Install the hog rings of seat cushion trim in position, and then securely connect the trim or trim cord
with the pad side wire.
JMJIA1874ZZ
JMJIA1873ZZ