Nissan Altima L32. Instruction — part 187
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< SYMPTOM DIAGNOSIS >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
INFOID:0000000004201425
Use the chart below to help you find the cause of the symptom. The numbers indicate the order of the inspec-
tion. If necessary, repair or replace these parts.
Reference page
(QR25DE),
(VQ35DE)
(QR2
5DE),
(VQ35DE)
SUSPECTED PARTS (Possible cause)
CL
UTCH PEDAL
(In
sp
ec
tio
n
an
d a
dj
us
tm
ent
)
CLUTCH LINE (Air in line)
CSC (Co
nc
en
tr
ic
sl
av
e
cy
lin
d
er) (W
orn
, d
irt
y o
r
da
ma
ge
d)
EN
GIN
E
M
O
UNTIN
G (Lo
o
se
)
CLUTCH DISC (Out of true)
CLUTCH DISC (Runou
t i
s e
xce
ss
iv
e)
CLUTCH DISC (L
in
in
g b
rok
en
)
CLUTCH DISC (Dirty or burned)
CLUTCH DISC (Oily)
CLUTCH DISC (W
orn out)
CLUTCH DISC (Hardened)
CLUTCH DISC (Lack
of
sp
lin
e
gre
as
e)
DIAPHRAGM S
P
RING (Damaged)
DI
APHRAG
M
S
P
RING
(O
ut
of
tip
al
ig
nm
en
t)
P
R
E
SSURE PLA
T
E (Distortion)
F
LYWHEEL (Distortion)
Symptom
Clutch grabs/chatters
1
2
2
2
2
2
Clutch pedal spongy
1
Clutch noisy
1
Clutch slips
1
2
2
3
4
5
Clutch does not disengage
1
2
4
5
5
5
5
5
5
6
6
7
PRECAUTIONS
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< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004201426
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
Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precautions Necessary for Steering Wheel Rotation after Battery Disconnect
INFOID:0000000004471323
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.
CL-4
< PRECAUTION >
PRECAUTIONS
Precaution for Procedure without Cowl Top Cover
INFOID:0000000004201427
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Service Notice or Precautions
INFOID:0000000004201428
• Always use recommended fluid. Refer to
MA-12, "Fluids and Lubricants"
.
• Never reuse drained fluid.
• Be careful not to splash fluid on painted areas.
• When removing and installing clutch piping, use tool.
• Use new fluid to clean or wash all parts of master cylinder.
• Never use mineral oils such as gasoline or kerosene. It will ruin the
rubber parts of the hydraulic system.
WARNING:
After cleaning clutch disc, wipe it with a dust collector. Do not
use compressed air.
PIIB3706J
SBR686C
PREPARATION
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< PREPARATION >
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PREPARATION
PREPARATION
Special Service Tools
INFOID:0000000004201429
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tools
INFOID:0000000004201430
Tool number
(Kent-Moore No.)
Tool name
Description
ST20050240
(
—
)
Diaphragm adjusting wrench
Adjusting unevenness of diaphragm spring of
clutch cover
KV30101000
(
—
)
Clutch aligning bar
Installing clutch disc
a: 15.9 mm (0.626 in) dia.
b: 17.9 mm (0.705 in) dia.
C: 40 mm (1.57 in) dia.
ZZA0508D
NT405
Tool name
Description
1.
Flare nut crowfoot
2.
Torque wrench
Removing and installing clutch piping
a: 10 mm (0.39 in)
Power tool
Loosening bolts and nuts
S-NT360
PBIC0190E
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