Nissan X-Trail 32. Manual - part 921

COMPONENT PARTS

EC-813

< SYSTEM DESCRIPTION >

[R9M]

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ENGINE COMPARTMENT

Alternator

CHG-6, "Alternator"

Hood switch

EC-823, "Hood Switch"

Reverse / neutral position switch (M/T models)

It detects that the transmission is in reverse and neutral.

ECM

EC-816, "ECM"

Engine restart bypass relay

EC-823, "Engine Restart Bypass Relay"

No.

Component parts

Function

JSBIA5317ZZ

No.

Component parts

Function

Fuel injector

EC-818, "Fuel Injector"

Fuel temperature sensor

EC-818, "Fuel Temperature Sensor"

Glow plug

EC-821, "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

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EC-814

< SYSTEM DESCRIPTION >

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COMPONENT PARTS

EXHAUST COMPARTMENT

BODY COMPARTMENT

Engine oil pressure sensor

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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

EC-819, "Exhaust Electric Throttle Control Actuator"

COMPONENT PARTS

EC-815

< SYSTEM DESCRIPTION >

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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

EC-817, "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

EC-821, "Cooling Fan"

Thermoplunger control unit

EC-821, "Thermoplunger Control Unit"

Thermoplunger unit

EC-821, "Thermoplunger"

Glow control unit

EC-821, "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

EC-822, "Stop Lamp Switch"

Brake pedal position switch (CVT models)

EC-822, "Stop Lamp Switch"

Stop/start OFF switch

EC-824, "Stop/Start OFF Switch"

DC/DC converter

EC-823, "DC/DC Converter"

No.

Component parts

Function

JSBIA0442ZZ

MBIB1523E