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Nissan Altima L32. Manual - part 677

EXHAUST SYSTEM (QR25DE)

EX-5

< ON-VEHICLE REPAIR >

[QR25DE]

ON-VEHICLE REPAIR

EXHAUST SYSTEM (QR25DE)

Exploded View

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Coupe Models

AWBIA0178GB

RH rear muffler bracket

Gasket

Front exhaust tube

Ring gasket

Front exhaust tube hanger

Center exhaust tube

Mounting rubber

Center exhaust tube hanger

Gasket

10.

Mounting rubber

11. Rear muffler

12. LH muffler tip

13.

RH muffler tip

14. Ground strap

EX-6

< ON-VEHICLE REPAIR >

[QR25DE]

EXHAUST SYSTEM (QR25DE)

Sedan Models

Removal and Installation

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WARNING:

• Perform the procedure with the exhaust system fully cooled down because the system will be hot

just after the engine is turned off.

AWBIA0001GB

RH rear muffler bracket

Gasket

Front exhaust tube

Ring gasket

Front exhaust tube hanger

Center exhaust tube

Mounting rubber

Center exhaust tube hanger

LH rear muffler

10.

Ground strap

11. LH rear muffler bracket

12. LH muffler tip

13.

RH muffler tip

14. RH rear muffler

EXHAUST SYSTEM (QR25DE)

EX-7

< ON-VEHICLE REPAIR >

[QR25DE]

• Be careful not to cut your hand on the insulator edges.

CAUTION:

• Use genuine NISSAN exhaust system parts or equivalent, which are specifically designed for heat

resistance, corrosion resistance, and shape.

REMOVAL

Remove exhaust system components using power tools.

• Remove heated oxygen sensor using Tool as needed.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Always replace exhaust gaskets with new ones when reassembling.

• Before installing a new heated oxygen sensor, clean and lube the exhaust tube threads using suit-

able tool.

• Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7

in) onto a hard surface such as a concrete floor; install a new one.

• Do not over-tighten the heated oxygen sensor. Doing so may damage the heated oxygen sensor,

resulting in the MIL coming on.

• If any mounting insulator is badly deformed, repair or replace it. If deposits such as mud pile up on

the mounting insulator, clean and inspect them.

• When installing the insulator avoid large gaps or interference between the insulator and each

exhaust pipe.

• Remove deposits from the sealing surface of each connection. Connect them securely to avoid

exhaust gas leaks.

• Temporarily tighten the exhaust manifold side nuts and the vehicle side bolts. Check each part for

any interference, and then tighten the nuts and bolts to specification.

• When installing each mounting rubber, avoid twisting or excessive extension in up/down and right/

left directions.

• Tighten the bolts without causing interference with the flange.

Inspection After Installation

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• With the engine running, check the exhaust tube joints for exhaust gas leaks and abnormal noise.

• Check that the mounting brackets and mounting insulators are installed properly and free from excessive

stress. Improper installation could result in excessive noise, leaks, and vibration.

Tool number

: KV10114400 (J-38365)

Oxygen sensor thread cleaner : — (J-43897-18)
Oxygen sensor thread cleaner : — (J-43897-12)

EX-8

< PRECAUTION >

[VQ35DE]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

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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 SR and SB section of this Service Man-

ual.

WARNING:

• 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 performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR 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 har-

ness connectors.

Necessary for Steering Wheel Rotation After Battery Disconnect

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NOTE:

• Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-

tion, then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect both

battery cables.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

This vehicle is equipped with a push-button ignition switch and a steering lock unit.

If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.

If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure

below before starting the repair operation.

OPERATION PROCEDURE

1. Connect both battery cables.

NOTE:

Supply power using jumper cables if battery is discharged.

2. Carry the Intelligent Key or insert it to the key slot and turn the push-button ignition switch to ACC position.

(At this time, the steering lock will be released.)

3. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-

nected and the steering wheel can be turned.

4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn

the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering

wheel will lock when the push-button ignition switch is turned to LOCK position.)

6. Perform self-diagnosis check of all control units using CONSULT-III.

Content .. 675 676 677 678 ..