Nissan Altima L32. Instruction — part 612

ENGINE CONTROL SYSTEM SYMPTOMS

EC-1569

< SYMPTOM DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

SYMPTOM

Reference
page

HARD/NO ST

AR

T/REST

AR

T (EXCP

.

HA)

E

N

GI

N

E

ST

AL

L

HESIT

A

TION/S

U

R

GING/F

LA

T SP

OT

SP

ARK KNOCK/DE

T

O

NA

TION

LACK OF POWE

R/POOR

ACCELERA

TIO

N

HIGH IDL

E

/L

OW

IDL

E

ROUG

H IDLE/HU

N

TING

IDL

ING VIBRA

T

ION

SLO

W

/NO RETURN T

O

IDLE

OVERHEA

T

S/W

A

TE

R

TEMPERA

T

URE

HIGH

EXCES

SIVE F

U

EL CONSUMP

T

ION

EXCES

SIVE OI

L CONSUMP

T

IO

N

BA

TTE

R

Y

DEAD (UN

D

E

R

CH

A

R

GE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG AH

AJ

AK

AL

AM HA

Fuel

Fuel tank

5

5

FL-10

Fuel piping

5

5

5

5

5

5

FL-4

Vapor lock

—

Valve deposit

5

5

5

5

5

5

5

—

Poor fuel (Heavy weight gasoline,
Low octane)

—

Air

Air duct

5

5

5

5

5

5

EM-129

Air cleaner

EM-129

Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)

5

5

5

5

EM-129

Electric throttle control actuator

EM-130

Air leakage from intake manifold/
Collector/Gasket

EM-129

,

EM-130

Cranking

Battery

1

1

1

1

1

1

1

1

PG-68

,

PG-139

Generator circuit

CHG-29

Starter circuit

3

STR-32

Signal plate

6

EM-216

PNP signal

4

TM-129

,

TM-20

Engine

Cylinder head

5

5

5

5

5

5

5

5

EM-191

Cylinder head gasket

4

3

Cylinder block

6

6

6

6

6

6

6

6

4

EM-206

Piston

Piston ring

Connecting rod

Bearing

Crankshaft

EC-1570

< SYMPTOM DIAGNOSIS >

[VQ35DE]

ENGINE CONTROL SYSTEM SYMPTOMS

1 - 6: The numbers refer to the order of inspection.

Valve
mecha-
nism

Timing chain

5

5

5

5

5

5

5

5

EM-166

Camshaft

EM-177

Intake valve timing control

EM-166

Intake valve

3

EM-191

Exhaust valve

Exhaust

Exhaust manifold/Tube/Muffler/
Gasket

5

5

5

5

5

5

5

5

EM-136

,

EX-10

Three way catalyst

Lubrica-
tion

Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler

5

5

5

5

5

5

5

5

LU-23

,

LU-

25

,

LU-27

,

LU-30

Oil level (Low)/Filthy oil

LU-23

Cooling

Radiator/Hose/Radiator filler cap

5

5

5

5

5

5

5

4

5

CO-38

Thermostat

5

CO-46

Water pump

CO-42

Water gallery

CO-48

Cooling fan

5

CO-40

Coolant level (Low)/Contaminat-
ed coolant

CO-34

NVIS (NISSAN Vehicle Immobilizer System —
NATS)

1

1

SEC-22

,

SEC-221

SYMPTOM

Reference
page

HARD/NO S

TA

R

T/RES

TA

R

T (E

XCP

. HA)

E

N

GINE

ST

ALL

HES

IT

A

TION/SURGING/FLA

T

SPOT

S

P

ARK KNOC

K

/DET

O

NA

TI

ON

LACK OF

POWER/POOR ACCELERA

TION

HIG

H

IDL

E

/L

OW

ID

LE

ROUGH IDLE/HUNTING

ID

LING VI

BRA

T

ION

S

LOW/NO RETU

RN

T

O

ID

LE

OVERHEA

T

S

/W

A

TER TEMPERA

T

URE HIG

H

E

X

CESSIVE

FUEL CON

S

UMP

T

ION

E

X

CESSIVE

OIL

C

O

NSUMP

T

ION

B

A

TTER

Y

DEAD (UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG AH

AJ

AK

AL

AM HA

NORMAL OPERATING CONDITION

EC-1571

< SYMPTOM DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

NORMAL OPERATING CONDITION

Description

INFOID:0000000004362399

FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED)

If the engine speed is above 1,400 rpm under no load (for example, the selector lever position is P or N and

engine speed is over 1,400 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off var-

ies based on engine speed.

Fuel cut will be operated until the engine speed reaches 1,000 rpm, then fuel cut will be cancelled.

NOTE:

This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System,

EC-1065,

"System Description"

.

EC-1572

< PRECAUTION >

[VQ35DE]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000004362400

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 Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-

ness connectors.

Precautions For Xenon Headlamp Service

INFOID:0000000004362401

WARNING:

Comply with the following warnings to prevent any serious accident.

• Disconnect the battery cable (negative terminal) or the power supply fuse before installing, remov-

ing, or touching the xenon headlamp (bulb included). The xenon headlamp contains high-voltage

generated parts.

• Never work with wet hands.

• Check the xenon headlamp ON-OFF status after assembling it to the vehicle. Never turn the xenon

headlamp ON in other conditions. Connect the power supply to the vehicle-side connector.

(Turning it ON outside the lamp case may cause fire or visual impairments.)

• Never touch the bulb glass immediately after turning it OFF. It is extremely hot.

CAUTION:

Comply with the following cautions to prevent any error and malfunction.

• Install the xenon bulb securely. (Insufficient bulb socket installation may melt the bulb, the connec-

tor, the housing, etc. by high-voltage leakage or corona discharge.)

• Never perform HID circuit inspection with a tester.

• Never touch the xenon bulb glass with hands. Never put oil and grease on it.

• Dispose of the used xenon bulb after packing it in thick vinyl without breaking it.

• Never wipe out dirt and contamination with organic solvent (thinner, gasoline, etc.).

Precaution for Procedure without Cowl Top Cover

INFOID:0000000004362402

When performing the procedure after removing cowl top cover, cover

the lower end of windshield with urethane, etc.

PIIB3706J