Nissan Qashqai (2007-2010). Manual — part 139

EVAPORATIVE EMISSION SYSTEM

EC-75

< FUNCTION DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

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

System Description

INFOID:0000000001056155

INPUT/OUTPUT SIGNAL CHART

*1: ECM determines the start signal status by the signals of engine speed and battery voltage.

*2: This signal is sent to the ECM through CAN communication line.

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.

Component Parts Location

INFOID:0000000001060014

1.

Intake manifold collector

2.

EVAP canister purge volume control
solenoid valve

A. To EVAP canister

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)

Engine speed*

1

EVAP canister
purge flow control

EVAP canister purge vol-
ume control solenoid valve

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Battery

Battery voltage*

1

Throttle position sensor

Throttle position

Accelerator pedal position sensor

Accelerator pedal position

Heated oxygen sensor 1

Density of oxygen in exhaust gas
(Mixture ratio feedback signal)

Combination meter*

2

Vehicle speed

EC-76

< FUNCTION DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

EVAPORATIVE EMISSION SYSTEM

1.

Ignition coil (with power transistor)
and spark plug

2.

Refrigerant pressure sensor

3.

Intake valve timing control solenoid
valve

4.

Knock sensor,
Crankshaft position sensor (POS)

5.

Fuel injector

6.

Camshaft position sensor (PHASE)

7.

Cooling fan motor

8.

IPDM E/R

9.

ECM

10. Mass air flow sensor (with intake

temperature sensor)

11.

Engine coolant temperature sensor

12. Electric throttle control actuator

(with built in throttle position sensor
and throttle control motor)

13. EVAP canister purge volume control

solenoid valve

JMBIA0399ZZ

EVAPORATIVE EMISSION SYSTEM

EC-77

< FUNCTION DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Mass air flow sensor

2.

Engine coolant temperature sensor

Vehicle front

1.

Electric throttle control actuator

2.

Camshaft position sensor (PHASE)

Vehicle front

1.

Ignition coil (with power transistor)
and spark plug

2.

Fuel injector

3

EVAP canister purge volume control
solenoid valve

Vehicle front

1.

ECM harness connector

2.

IPDM E/R

Vehicle front

JMBIA0400ZZ

JMBIA0401ZZ

JMBIA0402ZZ

JMBIA0403ZZ

EC-78

< FUNCTION DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

EVAPORATIVE EMISSION SYSTEM

PBIB2942E

1.

Heated oxygen sensor 1

2.

Exhaust manifold cover

3.

Heated oxygen sensor 2

4.

Heated oxygen sensor 2 harness
connector

1.

Intake valve timing control solenoid
valve

2.

Knock sensor

1.

Refrigerant pressure sensor

2.

PCV valve

Vehicle front

JMBIA0406ZZ

JMBIA0404ZZ

JMBIA0405ZZ