Nissan X-Trail 32. Manual — part 831
COMPONENT PARTS
EC-453
< SYSTEM DESCRIPTION >
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Refrigerant Pressure Sensor
INFOID:0000000010986224
The refrigerant pressure sensor is installed at the condenser of the air conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent
to ECM, and ECM controls cooling fan system.
Stop Lamp Switch & Brake Pedal Position Switch
INFOID:0000000010986225
Stop lamp switch and brake pedal position switch are installed to brake pedal bracket.
ECM detects the state of the brake pedal by those two types of input (ON/OFF signal).
ASCD Steering Switch
INFOID:0000000010986226
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
Information Display
INFOID:0000000010986227
The operation mode of the ASCD is indicated on the information display in the combination meter.
ECM transmits the status signal to the combination meter via CAN communication according to ASCD opera-
tion.
PBIB2657E
Brake pedal
Brake pedal position switch
Stop lamp switch
Released
ON
OFF
Depressed
OFF
ON
EC-454
< SYSTEM DESCRIPTION >
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STRUCTURE AND OPERATION
STRUCTURE AND OPERATION
Positive Crankcase Ventilation
INFOID:0000000010986228
This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold.
During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV
valve.
Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air.
The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes
through the hose connecting air inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve.
The flow goes through the hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.
PBIB0492E
PBIB1588E
SYSTEM
EC-455
< SYSTEM DESCRIPTION >
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SYSTEM
ENGINE CONTROL SYSTEM
ENGINE CONTROL SYSTEM : System Description
INFOID:0000000010986229
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
JSBIA4970GB
EC-456
< SYSTEM DESCRIPTION >
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SYSTEM
ECM controls the engine by various functions.
Function
Reference
Multiport fuel injection system
EC-461, "MULTIPORT FUEL INJECTION SYSTEM : System De-
scription (with automatic air conditioner)"
Electric ignition system
EC-465, "ELECTRIC IGNITION SYSTEM : System Description"
Intake valve timing control
EC-466, "INTAKE VALVE TIMING CONTROL : System Descrip-
tion"
Exhaust valve timing control
EC-469, "EXHAUST VALVE TIMING CONTROL : System Descrip-
tion"
Intake manifold runner control
EC-470, "INTAKE MANIFOLD RUNNER CONTROL : System De-
scription"
Engine protection control
EC-470, "ENGINE PROTECTION CONTROL AT LOW ENGINE
OIL PRESSURE : System Description"
Air conditioning cut control
EC-471, "AIR CONDITIONING CUT CONTROL : System Descrip-
tion"
Power generation voltage variable control
EC-471, "POWER GENERATION VOLTAGE VARIABLE CON-
TROL SYSTEM : System Description"
Cooling fan control
EC-472, "COOLING FAN CONTROL : System Description"
Automatic speed control device (ASCD)
EC-473, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Sys-
tem Description"
CAN communication
EC-477, "CAN COMMUNICATION : System Description"
ECO mode
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