Infiniti FX35, FX50 (S51). Manual — part 636

EVAPORATIVE EMISSION SYSTEM

EC-85

< SYSTEM DESCRIPTION >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

SYSTEM DESCRIPTION

The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating.

EVAPORATIVE EMISSION LINE DRAWING

PBIB1631E

JMBIA0052ZZ

EC-86

< SYSTEM DESCRIPTION >

[VQ35HR]

EVAPORATIVE EMISSION SYSTEM

NOTE:
Do not use soapy water or any type of solvent while installing vacuum hose or purge hoses.

1.

Intake manifold collector

2.

EVAP canister purge volume control
solenoid valve

3.

EVAP service port

: From next figure

1.

EVAP canister vent control valve

2.

EVAP canister

3.

EVAP control system pressure sen-
sor

: Vehicle front

: To previous figure

JMBIA1514ZZ

EVAPORATIVE EMISSION SYSTEM

EC-87

< SYSTEM DESCRIPTION >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Component Parts Location

INFOID:0000000005568465

1.

IPDM E/R

2.

Battery current sensor

3.

Cooling fan relay

4.

Mass air flow sensor (with intake air
temperature sensor) (bank 1)

5.

Refrigerant pressure sensor

6.

Cooling fan motor-2

7.

Intake valve timing control solenoid
valve

8.

Exhaust valve timing control magnet
retarder

9.

Cooling fan control module

10. Cooling fan motor-1

11.

Mass air flow sensor (with intake air
temperature sensor) (bank 2)

12. ICC brake hold relay (ICC models)

13. Ignition coil (with power transistor)

and spark plug (bank 2)

14. Electric throttle control actuator

(bank 2)

15. A/F sensor 1 (bank 2)

16. Fuel injector (bank 2)

17. Camshaft position sensor

18. Engine coolant temperature sensor

19. Knock sensor

20. Exhaust valve timing control position

sensor

21. EVAP canister purge volume control

solenoid valve

22. Fuel injector (bank 1)

23. Ignition coil (with power transistor)

and spark plug (bank 1)

24. EVAP service port

25. A/F sensor 1 (bank 1)

26. Crankshaft position sensor

27. Electric throttle control actuator

(bank 1)

JMBIA1496ZZ

EC-88

< SYSTEM DESCRIPTION >

[VQ35HR]

EVAPORATIVE EMISSION SYSTEM

1.

Mass air flow sensor (with intake air
temperature sensor) (bank 1)

2.

Mass air flow sensor (with intake air
temperature sensor) (bank 2)

1.

Electric throttle control actuator
(bank 1)

2.

Electric throttle control actuator
(bank 2)

1.

Cooling fan control module

2.

Cooling fan motor-1

3.

Cooling fan motor-2

4.

Cooling fan relay

JMBIA1497ZZ

JMBIA0004ZZ

JMBIA1498ZZ