Nissan Qashqai (2007-2010). Manual — part 442

TURBOCHARGER BOOST CONTROL

EC-1287

< FUNCTION DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Electric throttle control actuator

2.

Clutch switch

3.

Clutch pedal

1.

Body ground E17

JMBIA0427ZZ

JMBIA0428ZZ

EC-1288

< FUNCTION DIAGNOSIS >

[K9K]

EGR SYSTEM

EGR SYSTEM

System Description

INFOID:0000000000897371

EGR SYSTEM

EGR Valve Control

The EGR (exhaust gas recirculation) system consists of a direct current EGR volume control valve fitted with a
EGR volume control valve control position sensor. The EGR volume control valve is controlled in a closed-loop
via the EGR volume control valve control position sensor. Up to a certain rate, exhaust gas recirculation
enables nitrogen oxide (NOx) emissions to be reduced significantly.

Measurement of the Fresh Air Flow

The flow of fresh air entering the engine is calculated by a mass air flow sensor (ratiometric hot-wire sensor).
An intake air temperature sensor is integrated into the mass air flow sensor.
The mass air flow sensor facilitates control of the quantity of exhaust gas sent for recirculation, thus ensuring
the best possible recirculation rates. Air flow measurement allows closed-loop control via the EGR valve.

Component Parts Location

INFOID:0000000001078869

JMBIA0429ZZ

EGR SYSTEM

EC-1289

< FUNCTION DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Fuel injector

2.

Glow plug

3.

Fuel rail pressure sensor

4.

Crankshaft position sensor

5.

Turbocharger boost sensor

6.

Engine coolant temperature sensor

7.

Glow relay

8.

Turbocharger boost control solenoid
valve

9.

ECM

10. Mass air flow sensor (with intake air

temperature sensor)

11.

Electric throttle control actuator

12. Camshaft position sensor

13. EGR volume control valve

: Vehicle front

1.

Mass air flow sensor (with intake air
temperature sensor)

2.

Engine coolant temperature sensor

1.

Camshaft Position Sensor

2.

Fuel injector

: Vehicle front

1.

Crankshaft position sensor

2.

Turbocharger boost control solenoid
valve

JMBIA0419ZZ

JMBIA0420ZZ

JMBIA0421ZZ

EC-1290

< FUNCTION DIAGNOSIS >

[K9K]

EGR SYSTEM

: Vehicle front

1.

Turbocharger boost sensor

2.

Refrigerant pressure sensor

1.

EGR volume control valve

2.

Glow plug

1.

ASCD steering switch

2.

RESUME/ACCELERATE switch

3.

SET/COAST switch

4.

CANCEL switch

5.

MAIN switch

1.

Accelerator pedal position sensor

2.

Stop lamp switch

3.

Brake pedal

JMBIA0422ZZ

JMBIA0423ZZ

JMBIA0424ZZ

JMBIA0425ZZ