Nissan Qashqai J11. Manual - part 465

COMPONENT PARTS

EC9-15

< SYSTEM DESCRIPTION >

[R9M]

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Behind luggage side finisher RH

Radiator assembly

Behind front fender protector LH

Instrument lower panel

Periphery of pedals

Behind of glove upper box assembly

JSBIA4745ZZ

No.

Component parts

Function

1

Refrigerant pressure sensor

EC9-22, "Refrigerant Pressure Sensor"

2

Active grille shutter

EXT-12, "ACTIVE GRILLE SHUTTER SYSTEM : Active grille 
shutter"

3

Cooling fan resistor

EC9-21, "Cooling Fan Resistor"

4

ASCD steering switch

EC9-22, "ASCD Steering Switch"

5

Combination meter

MWI-9, "METER SYSTEM : System Description"

6

Fuel pump control module (FPCM)

EC9-18, "FPCM (Fuel Pump Control Module)"

7

Cooling fan resistor

EC9-21, "Cooling Fan Resistor"

8

Cooling fan motor

EC9-21, "Cooling Fan"

9

Thermoplunger control unit

EC9-21, "Thermoplunger Control Unit"

10

Thermoplunger unit

EC9-21, "Thermoplunger"

11

Glow control unit

EC9-21, "Glow Control Unit"

12

Relay box

—

13

Fuse block (J/B)

—

EC9-16

< SYSTEM DESCRIPTION >

[R9M]

COMPONENT PARTS

ECM

INFOID:0000000010308918

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:0000000010308919

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:0000000010308920

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:0000000010308921

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:0000000010308922

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.

14

Stop/start OFF switch

EC9-24, "Stop/Start OFF Switch"

15

Clutch interlock switch (M/T models)

EC9-22, "Clutch Interlock Switch & Clutch Pedal Position 
Switch"

16

Clutch pedal position switch (M/T models)

17

Accelerator pedal position sensor

EC9-22, "Accelerator Pedal Position Sensor"

18

Stop lamp switch

EC9-22, "Stop Lamp Switch"

19

Brake pedal position switch (CVT models)

EC9-22, "Stop Lamp Switch"

20

DC/DC converter

EC9-23, "DC/DC Converter"

No.

Component parts

Function

JSBIA0442ZZ

MBIB1523E

COMPONENT PARTS

EC9-17

< SYSTEM DESCRIPTION >

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<Reference data>

Turbocharger Boost Sensor

INFOID:0000000010308923

The turbocharger boost sensor detects pressure in the charge air cooler outlet area. The sensor send to volt-
age signal to the ECM. As the pressure increases, the voltage rises.

Intake Air Temperature Sensor 2

INFOID:0000000010308924

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.

<Reference data>

Air Fuel Ratio (A/F) Sensor

INFOID:0000000010308925

Air fuel ratio (A/F) sensor is installed on the upstream of the oxidation catalyst. A/F sensor measures the oxy-
gen level in the exhaust gas and converts it into a voltage signal. A/F sensor sends the signal to ECM. Based
on the signal from A/F sensor, ECM calculates the air fuel mixture ratio. ECM uses the calculated ratio for the
DPF (Diesel Particulate Filter) regeneration control.
A heater is integrated in A/F sensor to ensure the required operating temperature.

Engine Coolant Temperature Sensor

INFOID:0000000010308926

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

<Reference data>

High Pressure Fuel Pump

INFOID:0000000010308928

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.

Fuel Pump

INFOID:0000000010456182

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:

Intake air temperature

°

C (

°

F)

Resistance (Approx.)

k

Ω

−

10 (14)

8.628 – 9.577

10 (50)

3.524 – 3.841

20 (68)

2.342 – 2.531

30 (86)

1.585 – 1.715

50 (122)

0.769 – 0.844

Intake air temperature

°

C (

°

F)

Resistance (Approx.)

k

Ω

−

10 (14)

9.395 – 9.775

10 (50)

3.791 – 3.927

20 (68)

2.499 – 2.583

30 (86)

1.706 – 1.760

50 (122)

0.833 – 0.857

Engine coolant temperature

°

C 

(

°

F)

Resistance (Approx.)

k

Ω

−

10 (14)

11.33 – 13.59

25 (77)

2.140 – 2.364

80 (176)

0.274 – 0.290

110 (230)

0.112 – 0.117

EC9-18

< SYSTEM DESCRIPTION >

[R9M]

COMPONENT PARTS

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.

Fuel Injector

INFOID:0000000010308927

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.

Fuel Rail Pressure Sensor

INFOID:0000000010308931

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 Pressure Sensor

INFOID:0000000010501531

The fuel pressure sensor detects the fuel pressure (actual pressure)
of the fuel pump.
The fuel pressure measured by a measuring capacitor coupled with
the fuel pressure sensor.
When fuel pressure increase, the gap between the capacitor elec-
trodes decreases. The capacitance, and therefore the signal voltage,
thus increase in proportion to the fuel pressure.
The signal voltage serves the FPCM as information about the fuel
pressure.

Fuel Temperature Sensor

INFOID:0000000010308932

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.

<Reference data>

Fuel Heater With Water In Fuel Level Sensor

INFOID:0000000010308933

Fuel heater is installed on fuel filter and operated when fuel temperature is low in order to inhibit fuel solidifica-
tion caused by wax content separation in fuel.

FPCM (Fuel Pump Control Module)

INFOID:0000000010501530

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 electric consumption of fuel pump is significantly reduced.
This is a power electronic unit controlled by ECM pulse width modulation (PWM).

Turbocharger Boost Control Solenoid Valve

INFOID:0000000010308934

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.

JSBIA4055ZZ

Fuel temperature

°

C (

°

F)

Resistance (Approx.)

k

Ω

−

10 (14)

8.623 – 10.454

25 (77)

1.928 – 2.174

80 (176)

0.292 – 0.326

110 (230)

0.127 – 0.143