Nissan Qashqai J11. Manual - part 264

SYSTEM

ECM-33

< SYSTEM DESCRIPTION >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

ECM

N

P

O

P0087
P0088
P0090

FRP control system

×

—

—

×

—

—

—

P0102
P0103

Mass air flow sensor circuit

×

×

×

×

×

×

—

P0117
P0118

Engine coolant temperature 
sensor circuit

—

—

—

×

×

—

Engine speed will not rise more than 
1,800rpm due to the fuel cut.

P0122
P0123
P0222
P0223
P2135

Throttle position sensor

—

—

—

—

—

—

The ECM controls the electric throttle con-
trol actuator in regulating the throttle open-
ing in order for the idle position to be within 
+10 degrees.
The ECM regulates the opening speed of 
the throttle valve to be slower than the nor-
mal condition. So, the acceleration will be 
poor. 
NOTE:
If throttle position sensor 1 and 2 malfunc-
tion at the same time conducts following 
control.
• ECM stops the electric throttle control ac-

tuator control, throttle valve is maintained 
at a fixed opening (approx. 5 degrees) by 
the return spring.

P0171
P0172

Fuel injection system

×

—

—

×

×

—

—

P0190

FRP sensor

×

—

—

×

×

—

—

P0197
P0198

Engine oil temperature sensor

—

—

—

—

—

—

Intake and exhaust valve timing control 
does not function.

P0201
P0202
P0203
P0204

Injector

×

—

—

×

—

—

—

P0300

Misfire

×

—

—

×

×

—

—

P0335

Crankshaft position sensor

—

—

×

—

—

—

—

P0340

Camshaft position sensor

—

—

×

—

—

—

—

P0365

Exhaust valve timing control po-
sition sensor

—

—

×

—

—

—

—

P0500

Vehicle speed sensor

×

—

—

×

×

—

—

P0524

Engine oil pressure

—

—

—

—

—

—

• ECM illuminates engine oil pressure 

warning lamp on the combination meter.

• Engine speed will not rise more than 

4,000rpm due to the fuel cut.

• Fail-safe is canceled when ignition switch 

OFF 

→

 ON.

P0603
P0607

ECM

×

×

—

—

—

—

—

P0604
P0605
P0606

—

—

—

—

—

—

(Computing part of ECM does not operate 
normally.)
ECM stops the electric throttle control actu-
ator control, throttle valve is maintained at a 
fixed opening (approx. 5 degrees) by the re-
turn spring.

P062B

×

—

—

×

—

—

NOTE:
Fail-safe mode may not start depending on 
malfunction type of ECM.

DTC No.

Detected items

Vehicle behavior

Pattern

Others

A

B

C

D

E

F

ECM-34

< SYSTEM DESCRIPTION >

[MR20DD]

SYSTEM

DIG (DIRECT INJECTION GASOLINE) SYSTEM

P0643

Sensor power supply

—

—

—

—

—

—

ECM stops the electric throttle control actu-
ator control, throttle valve is maintained at a 
fixed opening (approx. 5 degrees) by the re-
turn spring.

P1197

Out  of  gas

—

—

—

—

—

—

Engine  torque  is  limited.

P1217

Engine  over  temperature

—

—

—

—

—

—

Engine speed will not rise more than 
1,800rpm due to the fuel cut.

P1805

Brake switch

—

—

—

—

—

—

ECM controls the electric throttle control ac-
tuator by regulating the throttle opening to a 
small range.
Therefore, acceleration will be poor.

Vehicle condition

Driving condition

When engine is 
idling

Normal

When accelerating

Poor acceleration

P2008

Intake manifold runner control 
valve

×

×

×

×

×

×

—

P2100
P2103

Throttle control motor relay

—

—

—

—

—

—

ECM stops the electric throttle control actu-
ator control, throttle valve is maintained at a 
fixed opening (approx. 5 degrees) by the re-
turn spring.

P2101

Electric throttle control function

—

—

—

—

—

—

ECM stops the electric throttle control actu-
ator control, throttle valve is maintained at a 
fixed opening (approx. 5 degrees) by the re-
turn spring.

P2118

Throttle control motor

—

—

—

—

—

—

ECM stops the electric throttle control actu-
ator control, throttle valve is maintained at a 
fixed opening (approx. 5 degrees) by the re-
turn spring.

P2119

Electric throttle control actuator

×

×

—

—

—

—

ECM stops the electric throttle control actu-
ator control, throttle valve is maintained at a 
fixed opening (approx. 5 degrees) by the re-
turn spring.
NOTE:
For pattern A and B refer to A and B of 
P2119 DTC detection logic. (Refer to 

ECM-

355, "DTC Description"

.)

For C of P2119 DTC detection logic ECM 
behaves as above.

P2122
P2123
P2127
P2128
P2138

Accelerator pedal position sen-
sor

—

—

—

—

—

—

The ECM controls the electric throttle con-
trol actuator in regulating the throttle open-
ing in order for the idle position to be within 
+10 degrees.
The ECM regulates the opening speed of 
the throttle valve to be slower than the nor-
mal condition. Therefore, the acceleration 
will be poor. 
NOTE:
If accelerator pedal position sensor 1 and 2 
malfunction at the same time conducts fol-
lowing control.
• ECM stops the electric throttle control ac-

tuator control, throttle valve is maintained 
at a fixed opening (approx. 5 degrees) by 
the return spring.

DTC No.

Detected items

Vehicle behavior

Pattern

Others

A

B

C

D

E

F

SYSTEM

ECM-35

< SYSTEM DESCRIPTION >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

ECM

N

P

O

DIG (DIRECT INJECTION GASOLINE) SYSTEM : System Description

INFOID:0000000010702818

System Diagram

*1: This sensor is not used to control the engine system under normal conditions.

SYSTEM DESCRIPTION

The adoption of the direct fuel injection system [DIG (Direct Injection Gasoline)] enables more accurate adjust-
ment of fuel injection quantity by injecting atomized high-pressure fuel directly into the cylinder. This method
allows high-powered engine, high torque, low fuel consumption, quietness, and emissions-reduction.
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air and fuel rail pressure) from the crankshaft position sensor,
camshaft position sensor, mass air flow sensor and the fuel rail pressure sensor.

FUEL INJECTION CONTROL

Injection Pattern

ECM conducts sequential injection (1 injection per 2 rotations of engine to each cylinder, suitable injection
according to each cylinder's ignition order).

Injection when starting the engine

When starting the engine, ECM determines the amount of fuel injected according to conditions such as engine
coolant temperature to make the starting smoother.
Also, conducts the starting control with stratified-charge combustion according to conditions.

Injection when driving normally

JSBIA5016GB

ECM-36

< SYSTEM DESCRIPTION >

[MR20DD]

SYSTEM

Normally, ECM determines the amount of injection to be an optimum air-fuel mixture ratio for homogeneous
combustion.

Cut-in injection when acceleration

When accelerating, according to the opening speed of throttle valve, ECM conducts a cut-in injection adding to
normal injection and improves accelerating performance.

DIRECT FUEL INJECTION CONTROL

Homogeneous Combustion

Homogeneous combustion is a combustion method that fuel is
injected during intake process so that combustion occurs in the
entire combustion chamber, as is common with conventional meth-
ods. As for a start except for starts with the engine cold, homoge-
neous combustion occurs.

Stratified-charge Combustion

Stratified-charge combustion is a combustion method which enables
extremely lean combustion by injecting fuel in the latter half of a
compression process, collecting combustible air-fuel around the
spark plug, and forming fuel-free airspace around the mixture. Right
after a start with the engine cold, the catalyst warm-up is accelerated
by stratified-charge combustion.

VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION

The amount of fuel injected is compensated to improve engine performance under various operating condi-
tions as listed below.

<Fuel increase>

• During warm-up
• When starting the engine
• During acceleration
• Hot-engine operation
• When selector lever position is changed from N to D (CVT models)
• High-load, high-speed operation

<Fuel decrease>

• During deceleration
• During high engine speed operation

MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)

JSBIA5017GB

JSBIA5019GB

PBIB2793E