Nissan Qashqai J11. Manual - part 364

ECK-16

< SYSTEM DESCRIPTION >

[K9K]

COMPONENT PARTS

ECM

INFOID:0000000010289584

The ECM consists of a microcomputer and connectors for signal input and output and for power supply. The
ECM controls the engine.

Camshaft Position Sensor

INFOID:0000000010289585

The camshaft position (CMP) sensor senses the retraction with camshaft to identify a particular cylinder. The
camshaft position (CMP) sensor senses the piston position. When the crankshaft position (CKP) sensor sys-
tem becomes inoperative, the camshaft position (CMP) sensor provides various controls of engine parts
instead, utilizing timing of cylinder identification signals. The sensor consists of a permanent magnet and Hall
IC.

Crankshaft Position Sensor

INFOID:0000000010289586

Crankshaft position (CKP) sensor detects engine speed and crank-
shaft position. The size difference of gear tooth placed on signal
plate changes the gap between signal plate and sensor, and mag-
netic field change around the sensor induces sensor output voltage
change. ECM detects engine speed and crankshaft position based
on this voltage change.

Mass Air Flow Sensor

INFOID:0000000010289587

The mass air flow sensor (1) is installed in the passage of intake air
and measures the intake flow rate. The mass air flow sensor controls
the temperature of the hot wire to a certain amount. The heat gener-
ated by the hot wire is reduced as the intake air flows around it. The
greater air flow, the greater the heat loss.
Therefore, the electric current supplied to hot wire is changed to
maintain the temperature of the hot wire as air flow increases. The
ECM detects the air flow by means of this current change.

Intake Air Temperature Sensor 1

INFOID:0000000010289588

The intake air temperature (IAT) sensor 1 is built-into the mass air flow sensor. The sensor detects intake air
temperature and transmits a signal to the ECM.
The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical
resistance of the thermistor decreases in response to the rise in temperature.

Stop/start OFF switch

ECK-23, "Stop/Start OFF Switch"

Clutch interlock switch

ECK-21, "Clutch Interlock Switch & Clutch Pedal Position
Switch"

Clutch pedal position switch

ECK-21, "Clutch Interlock Switch & Clutch Pedal Position
Switch"

Accelerator pedal position sensor

ECK-21, "Accelerator Pedal Position Sensor"

Stop lamp switch

ECK-21, "Stop Lamp Switch"

DC/DC converter

ECK-22, "DC/DC Converter"

No.

Component parts

Function

JSBIA0442ZZ

MBIB1523E

COMPONENT PARTS

ECK-17

< SYSTEM DESCRIPTION >

[K9K]

ECK

Turbocharger Boost Sensor

INFOID:0000000010289589

The turbocharger boost sensor detects intake manifold pressure.

Intake Air Temperature Sensor 2

INFOID:0000000010289590

The Intake Air Temperature (IAT) Sensor 2 is built-into the Turbocharger Boost Pressure Sensor. The sensor
detects intake air temperature and transmits a signal to the ECM.

Engine Coolant Temperature Sensor

INFOID:0000000010289592

The engine coolant temperature (ECT) sensor is used to detect the engine coolant temperature.

Fuel Injector

INFOID:0000000010289593

This injector is a magnetic type injector. It has a code exhibiting unique characteristics, and fuel injection quan-
tity can be controlled with more precision by writing the code into ECM.

FPCM (Fuel Pump Control Module)

INFOID:0000000010501740

FPCM (Fuel Pump Control Module) controls fuel pump discharge rate according to the actual fuel require-
ments of the engine and, as a result, the idling power of the electric fuel pump is significantly reduced.
This control unit consists of a control and power electronics unit.
The fuel pump is switched ON when a fuel pump ON signal is received by the FPCM.

High Pressure Fuel Pump

INFOID:0000000010289594

High Pressure Fuel Pump is operated by high pressure fuel pump drive pinion, installed at camshaft. The high
pressure fuel pump inlets fuel transported through fuel filter and performs pressure feed to fuel rail. The pump
includes fuel flow actuator which enables adjustment of fuel rail pressure.

Intake air temperature

C (

Resistance (Approx.)

Ω

−

10 (14)

8.716 – 9.689

10 (50)

3.553 – 3.875

20 (68)

2.353 – 2.543

30 (86)

1.613 – 1.729

50 (122)

0.794 – 0.839

Intake air temperature

C (

Resistance (Approx.)

Ω

−

10 (14)

9.395 – 9.775

10 (50)

3.791 – 3.927

20 (68)

2.416 – 2.583

30 (86)

1.706 – 1.760

50 (122)

0.833 – 0.857

Engine coolant temperature

(

Resistance (Approx.)

Ω

−

10 (14)

11.33 – 13.59

25 (77)

2.140 – 2.364

50 (122)

0.771 – 0.849

80 (176)

0.275 – 0.291

110 (230)

0.112 – 0.117

ECK-18

< SYSTEM DESCRIPTION >

[K9K]

COMPONENT PARTS

Fuel Rail Pressure Sensor

INFOID:0000000010289597

The fuel rail pressure (FRP) sensor is placed to the fuel rail. It measures the fuel pressure in the fuel rail. The
sensor sends voltage signal to the ECM. As the pressure increases, the voltage rises. ECM operates fuel flow
actuator according to feedback signal from fuel rail pressure sensor, and controls fuel pressure inside fuel rail.

Fuel Temperature Sensor

INFOID:0000000010289598

Fuel temperature sensor measures fuel temperature inside fuel tube of engine room. The sensor uses a ther-
mistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases
as temperature increases.

Fuel Pressure Sensor

INFOID:0000000010501741

The fuel pressure sensor detects the fuel pressure (actual pressure) of low pressure fuel circuit.

Fuel Pump

INFOID:0000000010289600

The fuel pump is installed in the fuel tank to start the engine faster. Fuel pump is controlled by FPCM (Fuel
Pump Control Module).

CAUTION:

Fuel pump is lubricated by the fuel in the tank. Never operate the pump for a long time without fuel in
the tank to prevent serious damages.

Turbocharger Boost Control Solenoid Valve

INFOID:0000000010289601

Turbocharger boost control solenoid valve controls the turbocharger boost control actuator. By changing the
variable nozzle vane opening through the rods, the intake air volume is adjusted. The turbocharger boost con-
trol solenoid valve is moved by ON/OFF pulse from the ECM. The longer the ON pulse, the charge air pres-
sure rises.

High Pressure EGR Volume Control Valve

INFOID:0000000010289602

High pressure EGR Volume Control Valve controls the volume of EGR gas returning from the exhaust mani-
fold to the intake manifold.
The High pressure EGR Volume Control Valve consists of high pressure EGR Volume Control Valve Position
Sensor, EGR Valve, and DC motor. The EGR Volume Control Valve Position Sensor consists of a permanent
magnet and Hall IC, and senses the valve position and feeds the voltage signals to the ECM. The ECM judges
the current opening angle of the valve from this signals, and controls the DC motor to make the valve opening
angle in response to driving conditions.

Low Pressure EGR Volume Control Valve

INFOID:0000000010289603

Low Pressure EGR Volume Control Valve controls the volume of EGR gas returning from the exhaust tube
(downstream of DPF) to the passage of intake air (upstream of turbocharger).
The Low pressure EGR Volume Control Valve consists of Low pressure EGR Volume Control Valve Position
Sensor, EGR Valve, and DC motor. The EGR Volume Control Valve Position Sensor consists of a permanent
magnet and Hall IC, and senses the valve position and feeds the voltage signals to the ECM. The ECM judges
the current opening angle of the valve from this signals, and controls the DC motor to make the valve opening
angle in response to driving conditions.

Fuel temperature

C (

Resistance (Approx.)

Ω

−

10 (14)

8.623 – 10.454

25 (77)

1.928 – 2.174

50 (122)

0.764 – 0.858

80 (176)

0.292 – 0.326

110 (230)

0.127 – 0.143

COMPONENT PARTS

ECK-19

< SYSTEM DESCRIPTION >

[K9K]

ECK

Low Pressure EGR Temperature Sensor

INFOID:0000000010289604

Low Pressure EGR Volume Control Valve Upstream Temperature Sensor is installed on the downstream of
low pressure EGR volume control valve. The sensor detects the low pressure EGR gas temperature. The sen-
sor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the exhaust gas tem-
perature input.

Electric Throttle Control Actuator

INFOID:0000000010289605

The Electric Throttle Control Actuator consists of position sensor, throttle valve, and DC motor. The position
sensor consists of a permanent magnet and Hall IC, and senses the valve position and feeds the voltage sig-
nals to the ECM. The ECM judges the current opening angle of the valve from this signals, and controls the
DC motor to make the valve opening angle in response to driving conditions.
Throttle valve is fully open when in non-operating status. When EGR is Performed or the engine is stopped,
this valve operates in direction that closes itself.

Exhaust Electric Throttle Control Actuator

INFOID:0000000010289606

Exhaust Electric Throttle Control Actuator is installed to the exhaust tube and activated only during low pres-
sure EGR.

DPF (Diesel Particulate Filter)

INFOID:0000000010289607

DPF (Diesel Particulate Filter) traps PM (Particulate Matter) in exhaust gas. DPF is formed in a honeycomb
form made of ceramic. This structure facilitates to trap particulate matter. When the amount of particulate mat-
ter in the DPF reaches the specified level, the particulate matter needs to be reduced through burning to main-
tain the DPF function. This reducing of particulate matter is called Regeneration and should be performed

Exhaust gas temperature

C (

Resistance (Approx.)

Ω

0 (32)

148.9 – 175.5

20 (68)

57.1 – 65.8

100 (212)

3.167 – 3.433

130 (572)

0.062 – 0.068

PBIB3160E

Content .. 362 363 364 365 ..