Nissan Qashqai J11. Manual — part 465
COMPONENT PARTS
EC9-15
< SYSTEM DESCRIPTION >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC9
N
P
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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
9
Thermoplunger control unit
EC9-21, "Thermoplunger Control Unit"
10
Thermoplunger unit
11
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
19
Brake pedal position switch (CVT models)
20
DC/DC converter
No.
Component parts
Function
JSBIA0442ZZ
MBIB1523E
COMPONENT PARTS
EC9-17
< SYSTEM DESCRIPTION >
[R9M]
C
D
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F
G
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EC9
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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
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