Nissan Pathfinder. Manual — part 538

EC-458

< SYMPTOM DIAGNOSIS >

[VQ35DE]

ENGINE CONTROL SYSTEM SYMPTOMS

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

*: For the details of the EXP-800 NI or GR8-1200 NI, refer to

CHG-4, "Special Service Tool"

.

Engine

Cylinder head

5

5

5

5

5

5

5

5

EM-94

Cylinder head gasket

4

3

Cylinder block

6

6

6

6

6

6

6

6

4

EM-121

Piston

Piston ring

Connecting rod

Bearing

Crankshaft

Valve
mecha-
nism

Timing chain

5

5

5

5

5

5

5

5

EM-62

Camshaft

EM-75

Intake valve timing control

EM-62

Intake valve

3

EM-89

Exhaust valve

Exhaust

Exhaust manifold/Tube/Muffler/
Gasket

5

5

5

5

5

5

5

5

EM-29

,

EX-

4

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

EM-36

,

LU-

10

,

LU-12

,

LU-15

Oil level (Low)/Filthy oil

LU-8

Cooling

Radiator/Hose/Radiator filler cap

5

5

5

5

5

5

5

4

5

CO-15

,

CO-26

Thermostat

5

CO-24

Water pump

CO-19

Water gallery

CO-8

Cooling fan

5

CO-17

Coolant level (Low)/Contaminat-
ed coolant

CO-10

NVIS (NISSAN Vehicle Immobilizer System —
NATS)

1

1

SEC-12

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

XCESSIVE

FUEL CON

S

UMP

T

ION

E

XCESSIVE

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-459

< SYMPTOM DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

NORMAL OPERATING CONDITION

Description

INFOID:0000000009178385

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

If the engine speed is above 2,000 rpm under no load (for example, the selector lever position is P or N and

engine speed is over 2,000 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 1,100 rpm, then fuel cut will be cancelled.

NOTE:

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

EC-33,

"MULTIPORT FUEL INJECTION SYSTEM : System Description"

.

EC-460

< PERIODIC MAINTENANCE >

[VQ35DE]

IDLE SPEED

PERIODIC MAINTENANCE

IDLE SPEED

Work Procedure

INFOID:0000000009178386

1.

CHECK IDLE SPEED

With CONSULT

Check idle speed in “DATA MONITOR” mode with CONSULT.

With GST

Check idle speed with Service $01 of GST.

>> INSPECTION END

IGNITION TIMING

EC-461

< PERIODIC MAINTENANCE >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

IGNITION TIMING

Work Procedure

INFOID:0000000009178387

1.

CHECK IGNITION TIMING

1. Attach timing light to loop wires as shown.

2. Check ignition timing.

>> INSPECTION END

: Timing light

: Vehicle front

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