Nissan X-Trail 32. Manual — part 921
COMPONENT PARTS
EC-813
< SYSTEM DESCRIPTION >
[R9M]
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ENGINE COMPARTMENT
Alternator
Hood switch
Reverse / neutral position switch (M/T models)
It detects that the transmission is in reverse and neutral.
ECM
Engine restart bypass relay
EC-823, "Engine Restart Bypass Relay"
No.
Component parts
Function
JSBIA5317ZZ
No.
Component parts
Function
Fuel injector
Fuel temperature sensor
EC-818, "Fuel Temperature Sensor"
Glow plug
Engine coolant bypass control solenoid valve
EC-822, "Engine Coolant Bypass Valve Control Solenoid
Valve"
Electric throttle control actuator
EC-819, "Electric Throttle Control Actuator"
Intake valve runner control valve
EC-819, "Intake Manifold Runner Control Valve"
High pressure EGR volume control valve
EC-819, "High Pressure EGR Volume Control Valve"
Turbocharger boost sensor (with intake air temperature sen-
sor 2)
•
EC-817, "Turbocharger Boost Sensor"
•
EC-817, "Intake Air Temperature Sensor 2"
Fuel rail pressure sensor
EC-818, "Fuel Rail Pressure Sensor"
Camshaft position sensor
EC-816, "Camshaft Position Sensor"
Engine oil level sensor
—
EC-814
< SYSTEM DESCRIPTION >
[R9M]
COMPONENT PARTS
EXHAUST COMPARTMENT
BODY COMPARTMENT
Engine oil pressure sensor
—
Engine coolant temperature sensor
EC-817, "Engine Coolant Temperature Sensor"
Crankshaft position sensor
EC-816, "Crankshaft Position Sensor"
Fuel flow actuator
EC-817, "High Pressure Fuel Pump"
Turbocharger boost control solenoid valve
EC-818, "Turbocharger Boost Control Solenoid Valve"
DPF (diesel particulate filter) differential pressure sensor
EC-820, "DPF Differential Pressure Sensor"
Low pressure EGR volume control valve
EC-819, "Low Pressure EGR Volume Control Valve"
Low pressure EGR temperature sensor
EC-819, "Low Pressure EGR Temperature Sensor"
Exhaust gas temperature sensor 2
EC-821, "Exhaust Gas Temperature Sensor 2"
Exhaust gas temperature sensor 1
EC-820, "Exhaust Gas Temperature Sensor 1"
Turbocharger
EC-836, "TURBOCHARGER BOOST CONTROL : System
Description"
A/F sensor 1
EC-817, "Air Fuel Ratio (A/F) Sensor"
Exhaust gas pressure sensor
EC-820, "Exhaust Gas Pressure Sensor"
No.
Component parts
Function
JSBIA4744ZZ
No.
Component parts
Function
DPF (diesel particulate filter)
EC-820, "DPF (Diesel Particulate Filter)"
Exhaust electric throttle control actuator
COMPONENT PARTS
EC-815
< SYSTEM DESCRIPTION >
[R9M]
C
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EC
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Behind luggage side finisher RH
Radiator assembly
Behind front fender protector LH
Periphery of pedals
Instrument lower panel
Behind of glove upper box assembly
JSBIA5261ZZ
No.
Component parts
Function
Refrigerant pressure sensor
EC-822, "Refrigerant Pressure Sensor"
Fuel pump
Combination meter
MWI-13, "METER SYSTEM : Combination Meter"
ASCD steering switch
EC-822, "ASCD Steering Switch"
Fuel pump control module (FPCM)
EC-818, "FPCM (Fuel Pump Control Module)"
Cooling fan resistor
EC-821, "Cooling Fan Resistor"
Cooling fan motor
Thermoplunger control unit
EC-821, "Thermoplunger Control Unit"
Thermoplunger unit
Glow control unit
Relay box
—
EC-816
< SYSTEM DESCRIPTION >
[R9M]
COMPONENT PARTS
ECM
INFOID:0000000010935505
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:0000000010935506
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:0000000010935507
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:0000000010935508
The mass air flow sensor
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:0000000010935509
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.
Clutch interlock switch (M/T models)
EC-822, "Clutch Interlock Switch & Clutch Pedal Position
Switch"
Clutch pedal position switch (M/T models)
Accelerator pedal position sensor
EC-822, "Accelerator Pedal Position Sensor"
Stop lamp switch
Brake pedal position switch (CVT models)
Stop/start OFF switch
EC-824, "Stop/Start OFF Switch"
DC/DC converter
No.
Component parts
Function
JSBIA0442ZZ
MBIB1523E
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