Nissan Qashqai J11. Manual - part 179

 

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Nissan Qashqai J11. Manual - part 179

 

 

ECH-14

< SYSTEM DESCRIPTION >

[HRA2DDT]

COMPONENT PARTS

BODY COMPARTMENT

7

Knock sensor

ECH-19, "Knock Sensor"

8

Fuel rail pressure sensor

ECH-18, "Fuel Rail Pressure Sensor"

9

Crankshaft position sensor

ECH-16, "Crankshaft Position Sensor"

10

Engine coolant temperature sensor

ECH-17, "Engine Coolant Temperature Sensor"

11

Engine coolant bypass valve control solenoid valve

ECH-17, "Engine Coolant Bypass Valve Control Solenoid Valve"

12

Camshaft position sensor

ECH-15, "Camshaft Position Sensor"

13

Exhaust valve timing control position sensor

ECH-18, "Exhaust Valve Timing Control Position Sensor"

14

High pressure fuel pump

ECH-18, "High Pressure Fuel Pump"

15

Heated oxygen sensor 2

ECH-18, "Heated Oxygen Sensor 2"

16

Exhaust valve timing control solenoid valve

ECH-18, "Exhaust Valve Timing Control Solenoid Valve"

17

Heated oxygen sensor 1

ECH-18, "Heated Oxygen Sensor 1"

No.

Component

Reference

Radiator assembly

Behind front fender protector LH

Instrument lower panel

Periphery of pedals

Behind of glove box assembly

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COMPONENT PARTS

ECH-15

< SYSTEM DESCRIPTION >

[HRA2DDT]

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Accelerator Pedal Position Sensor

INFOID:0000000010379005

The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signals to the ECM.

ASCD Steering Switch

INFOID:0000000010471137

ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.

Camshaft Position Sensor

INFOID:0000000010471148

The camshaft position (CMP) sensor senses the retraction with camshaft to identify a particular cylinder. The
camshaft position sensor senses the piston position. When the crankshaft position (CKP) sensor system
becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing
timing of cylinder identification signals. The sensor consists of a permanent magnet and Hall IC.

Clutch Pedal Position Switch

INFOID:0000000010379006

Clutch switch signal is applied to the ECM through the clutch pedal position switch when the clutch pedal is
depressed.

Clutch Interlock Switch

INFOID:0000000010471128

When the clutch pedal is depressed, the clutch interlock switch turns ON and the clutch interlock switch signal
is sent to the ECM. The ECM judges the clutch pedal conditions via the signal (ON or OFF).

No.

Component

Reference

1

EVAP canister

EVAP canister stores the generated fuel vapors in the sealed fuel 
tank to activated charcoals of EVAP canister when the engine is 
not operating or when refueling to the fuel tank.

2

Refrigerant pressure sensor

ECH-19, "Refrigerant Pressure Sensor"

3

Fuel  pump

ECH-19, "Fuel Pump"

4

ASCD steering switch

ECH-15, "ASCD Steering Switch"

5

Combination meter

ECH-19, "Malfunction Indicator Lamp"

ECH-19, "Stop/Start Indicator Lamp"

6

Cooling fan resistor

ECH-16, "Cooling Fan Resistor"

7

Cooling fan

ECH-16, "Cooling Fan"

8

Relay box

9

Fuse block (J/B)

10

Stop/start OFF switch

ECH-20, "Stop/Start OFF Switch"

11

Clutch interlock switch

ECH-15, "Clutch Interlock Switch"

12

Clutch pedal position switch

ECH-15, "Clutch Pedal Position Switch"

13

Accelerator pedal position sensor

ECH-15, "Accelerator Pedal Position Sensor"

14

Stop lamp switch

ECH-19, "Stop Lamp Switch"

15

DC/DC converter

ECH-16, "DC/DC Converter"

PBIB1741E

ECH-16

< SYSTEM DESCRIPTION >

[HRA2DDT]

COMPONENT PARTS

Cooling Fan

INFOID:0000000010379007

Cooling fan operates at each speed when the current flows in the cooling fan motor as follows.
Refer to 

ECH-31, "COOLING FAN CONTROL : System Description"

 for cooling fan operation.

Cooling Fan Resistor

INFOID:0000000010503741

Cooling Fan Resister is installed to the power circuit of Cooling Fan Motor and switches cooling fan speed
between LOW and HIGH.
When Cooling Fan Motor is rotated at LOW speeds, power is supplied to the cooling fan via Cooling Fan
Resistor.

Crankshaft Position Sensor

INFOID:0000000010379008

The crankshaft position (CKP) sensor is located on the cylinder block rear housing facing the gear teeth (cogs)
of the signal plate. The ECM receives the voltage signal and detects the function of the engine revolution.
The crankshaft position sensor also senses the piston position.

DC/DC Converter

INFOID:0000000010471141

The DC/DC converter is installed at the behind of the glove box
assembly and supplies power to the electrical equipment.
This converter is connected to ECM via the engine communication
line and includes an internal voltage converter. When restarting the
vehicle from the stop/start system operating condition, the voltage
converter boosts the voltage conveyed from the battery and provides
stable power to the electrical equipment to prevent reset from occur-
ring. For further details, refer to 

ECH-33, "STOP/START SYSTEM :

System Description"

.

ECM

INFOID:0000000010379009

The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.

Electric Throttle Control Actuator

INFOID:0000000010379010

OUTLINE

Electric throttle control actuator consists of throttle body, throttle valve, throttle control motor and throttle posi-
tion sensor.

THROTTLE CONTROL MOTOR

The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The current open-
ing angle of the throttle valve is detected by the throttle position sensor. The throttle position sensor provides

Clutch pedal

Clutch interlock switch

Released

OFF

Depressed

ON

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COMPONENT PARTS

ECH-17

< SYSTEM DESCRIPTION >

[HRA2DDT]

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feedback to the ECM, when opens/closes the throttle valve in response to driving conditions via the throttle
control motor.

THROTTLE POSITION SENSOR

The throttle position sensor responds to the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometer which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and controls the throttle valve opening angle in response to
driving conditions via the throttle control motor.

Engine Coolant Bypass Valve

INFOID:0000000010471168

Engine Coolant Bypass Valve switches the flow passage of engine coolant. This valve is controlled by Engine
Coolant Bypass Valve Control Solenoid Valve.

Engine Coolant Bypass Valve Control Solenoid Valve

INFOID:0000000010471169

Engine coolant bypass valve control solenoid valve is controlled by ECM. The solenoid valve controls negative
pressure given to diaphragm of engine coolant bypass valve. When engine coolant bypass valve control sole-
noid valve is activated, it opens solenoid valve and gives negative pressure from vacuum pump to diaphragm
of engine coolant bypass valve.

Engine Coolant Temperature Sensor

INFOID:0000000010379011

The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies
a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature
input.

Engine Oil Pressure Control Solenoid Valve

INFOID:0000000010471166

The engine oil pressure control solenoid valve regulates the engine oil pressure.

Engine Restart Relay

INFOID:0000000010471138

The engine restart relay is controlled by ECM when restarting the engine during the stop/start system opera-
tion.

Engine Restart Bypass Control Relay

INFOID:0000000010471139

The engine restart bypass control relay is controlled by ECM and controls the engine restart bypass relay.

Engine Restart Bypass Relay

INFOID:0000000010471140

The engine restart bypass relay reduces battery voltage drop right
after the starter motor activation at an engine restart by switching the
electric circuit of the starter motor. For details, refer to 

ECH-33,

"STOP/START SYSTEM : System Description"

.

PBIB0145E

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