cooling NISSAN NOTE 2016 Service User Guide

EC-14
< SYSTEM DESCRIPTION >[HR16DE]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
ENGINE CONTROL SYSTEM
ENGINE CONTROL SYSTEM : Component Parts LocationINFOID:0000000012431269
1. Battery current sensor
2. ECM3. IPDM E/R
Refer to PCS-4, "
Component Parts
Location"
4. Mass air flow sensor (with intake air temperature sensor) 5. Electric throttle control actuator
(with built in throttle position sensor
and throttle control motor) 6. EVAP canister purge volume control
solenoid valve
7. Cooling fan motor 8. Refrigerant pressure sensor
Refer to HA-12, "
Component Parts
Location"
ALBIA1071ZZ
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COMPONENT PARTSEC-17
< SYSTEM DESCRIPTION > [HR16DE]
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ENGINE CONTROL SYSTEM : Component DescriptionINFOID:0000000012431270
1. ASCD steering switch
2. Active grille shutter3. Fuel level sensor unit and fuel pump
4. Fuel tank temperature sensor 5. EVAP control system pressure sen- sor6. EVAP canister
7. EVAP canister vent control valve 8. ASCD brake switch 9. Stop lamp switch
10. Clutch pedal position switch 11. Accelerator pedal position sensor
A. Fuel tank B. Rear under bodyC. Periphery of pedals
ALBIA1072ZZ
Component Reference
ECM EC-20, "
ECM"
A/F sensor 1EC-19, "Air Fuel Ratio Sensor 1"
A/F sensor 1 heaterEC-19, "Air Fuel Ratio Sensor 1 Heater"
Accelerator pedal position sensorEC-18, "Accelerator Pedal Position Sensor"
Cooling fan motor EC-20, "Cooling Fan"
Crankshaft position sensorEC-20, "Crankshaft Position Sensor"
Electric throttle control actuatorEC-21, "Electric Throttle Control Actuator"
Engine coolant temperature sensorEC-21, "Engine Coolant Temperature Sensor"
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EC-20
< SYSTEM DESCRIPTION >[HR16DE]
COMPONENT PARTS
ECM receives the signals as shown in the figure.
Clutch Pedal Position SwitchINFOID:0000000012431275
When the clutch pedal is depressed, the clutch pedal pos
ition switch turns OFF and the clutch pedal position
switch signal is sent to the ECM. The ECM judges t he clutch pedal conditions via the signal (ON or OFF).
Cooling FanINFOID:0000000012431276
Cooling fan operates at low and high speed when the current flows in the cooling fan motor.
Refer to EC-38, "
COOLING FAN CONTROL : System Description" for cooling fan operation.
Crankshaft Position SensorINFOID:0000000012431277
The crankshaft position sensor is located on the cylinder block rear
housing facing the gear teeth (cogs) of the signal plate at end of the
crankshaft. It detects the fluctuation of the engine revolution.
The sensor consists of a permanent magnet and Hall IC.
When the engine is running, the high and low parts of the teeth
cause the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor
changes.
The ECM receives the voltage signal and detects the fluctuation of
the engine revolution.
ECM receives the signals as shown in the figure.
ECMINFOID:0000000012431278
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
JPBIA4880GB
PBIA9209J
JPBIA4880GB
PBIA9222J
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COMPONENT PARTSEC-27
< SYSTEM DESCRIPTION > [HR16DE]
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Refrigerant Pressure SensorINFOID:0000000012431299
The refrigerant pressure sensor is installed at the c
ondenser 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 & ASCD Brake SwitchINFOID:0000000012431300
Stop lamp switch and ASCD brake switch are installed to brake pedal bracket.
ECM detects the state of the brake pedal by those two types of input (ON/OFF signal).
Throttle Control MotorINFOID:0000000012431301
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle valve in response to driving conditions via the throttle control motor.
Throttle Control Motor RelayINFOID:0000000012431302
Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle
control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends
an ON signal to throttle control motor relay and batte ry voltage is provided to the ECM. When the ignition
switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not
provided to the ECM.
Throttle Position SensorINFOID:0000000012431303
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. 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 signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and controls the throttle valve in response to driving conditions
via the throttle control motor.
ASCD Steering SwitchINFOID:0000000012431304
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
PBIB2657E
Brake pedal ASCD brake switch Stop lamp switch
Released ONOFF
Depressed OFFON
PBIB0145E
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SYSTEMEC-31
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ENGINE CONTROL SYSTEM : System DescriptionINFOID:0000000012431308
ECM performs various controls such as fuel
injection control and ignition timing control.
MULTIPORT FUEL INJECTION SYSTEM
Function Reference
Multiport fuel injection system EC-32, "
MULTIPORT FUEL INJECTION SYSTEM : System De-
scription"
Electric ignition system
EC-35, "ELECTRIC IGNITION SYSTEM : System Description"
Air conditioning cut controlEC-37, "AIR CONDITIONING CUT CONTROL : System Descrip-
tion"
CAN communication
EC-38, "CAN COMMUNICATION : System Description"
Cooling fan control EC-38, "COOLING FAN CONTROL : System Description"
Evaporative emission systemEC-40, "EVAPORATIVE EMISSION SYSTEM : System Descrip-
tion"
Intake valve timing control
EC-41, "INTAKE VALVE TIMING CONTROL : System Description"
Exhaust valve timing control EC-42, "EXHAUST VALVE TIMING CO
NTROL : System Descrip-
tion"
Engine protection control at low engine oil pressure EC-43, "ENGINE PROTECTION CONTROL AT LOW ENGINE
OIL PRESSURE : System Description"
Fuel filler cap warning systemEC-44, "FUEL FILLER CAP WARNING SYSTEM : System De-
scription"
Automatic speed control device (ASCD)
EC-45, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Sys-
tem Description"
Active grille shutter systemEXT-11, "ACTIVE GRILLE SHUTTER SYSTEM : System Descrip-
tion"
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EC-38
< SYSTEM DESCRIPTION >[HR16DE]
SYSTEM
CAN COMMUNICATION
CAN COMMUNICATION : System DescriptionINFOID:0000000012431315
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication s
peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-30, "
CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart", about CAN com-
munication for detail.
COOLING FAN CONTROL
COOLING FAN CONTROL : System DiagramINFOID:0000000012431316
COOLING FAN CONTROL : System DescriptionINFOID:0000000012431317
INPUT/OUTPUT SIGNAL CHART
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM through CAN communication line.
SYSTEM DESCRIPTION (CVT MODELS)
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pres-
sure, air conditioner ON signal. Then contro l system has 3-step control [HIGH/LOW/OFF].
JSBIA0321GB
SensorInput signal to ECM ECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed
*1
Piston position
Cooling fan speed request
signalIPDM E/R
↓
Cooling fan relay
↓
Cooling fan motor
Engine coolant temperature sensor Engine coolant temperature
Refrigerant pressure sensor
Refrigerant pressure
Battery Battery voltage
*1
Combination meterVehicle speed*2
BCMA/C ON signal*2
Blower fan signal*2
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SYSTEMEC-39
< SYSTEM DESCRIPTION > [HR16DE]
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Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays through CAN communication line.
SYSTEM DESCRIPTION (M/T MODELS)
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pres-
sure, air conditioner ON signal. Then contro
l system has 2-step control [HIGH/OFF].
Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays through CAN communication line.
PBIB2483E
Cooling fan speed Cooling fan relay
123
Stop (OFF) OFFOFF OFF
Low (LOW) ONOFF OFF
High (HI) ONON ON
JSBIA1323GB
Cooling fan speed Cooling fan relay
Stop (OFF) OFF
Operate (HI) ON
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DIAGNOSIS SYSTEM (ECM)EC-63
< SYSTEM DESCRIPTION > [HR16DE]
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OLOAD SIGNAL ON/OFF
• Indicates [ON/OFF] condition of the electrical
lode signal.
- ON: Rear window defogger switch is ON and/or lighting switch is 2nd position.
- OFF: Both rear window defogger switch and light-
ing switch are OFF.
IGNITION SW ON/OFFIndicates [ON/OFF] condition from ignition switch
signal.
HEATER FAN SW ON/OFF Indicates [ON/OFF] condition from the heater fan
switch signal.
BRAKE SW ON/OFFIndicates [ON/OFF] condition from the stop lamp
switch signal.
INJ PULSE-B1 msecIndicates the actual fuel injection pulse width com-
pensated by ECM according to the input signals. When the engine is stopped, a certain
computed value is indicated.
IGN TIMING BTDCIndicates the ignition timing computed by ECM ac-
cording to the input signals. When the engine is stopped, a certain
value is indicated.
CAL/LD VALUE %“Calculated load value” indicates the value of the
current air flow divided by peak air flow.
MASS AIRFLOW g/sIndicates the mass air flow computed by ECM ac-
cording to the signal voltage of the mass air flow
sensor.
PURG VOL C/V %• Indicates the EVAP canister purge volume con-
trol solenoid valve control value computed by the
ECM according to the input signals.
• The opening becomes larger as the value in-
creases.
INT/V TIM(B1) °CA Indicates [ °CA] of intake camshaft advance angle.
EXH/V TIM B1 °CA Indicates [ °CA] of exhaust camshaft retard angle.
INT/V SOL(B1) %• The control value of the intake valve timing con-
trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.
• The advance angle becomes larger as the value increases.
AIR COND RLY ON/OFF The air conditioner relay control condition (deter-
mined by ECM according to the input signals) is in-
dicated.
FUEL PUMP RLY ON/OFF Indicates the fuel pump relay control condition de-
termined by ECM according to the input signals.
VENT CONT/V ON/OFF • The control condition of the EVAP canister vent
control valve (determined by ECM according to
the input signals) is displayed.
- ON: Closed
-OFF: Open
THRTL RELAY ON/OFF Indicates the throttle control motor relay control
condition determined by the ECM according to the
input signals.
COOLING FAN HI/LOW/OFF • Indicates the condition of the cooling fan (deter-
mined by ECM according to the input signals).
- HI: High speed operation
- LOW: Low speed operation
-OFF: Stop
HO2S2 HTR (B1) ON/OFF Indicates [ON/OFF] condition of heated oxygen
sensor 2 heater determined by ECM according to
the input signals.
Monitored item Unit
DescriptionRemarks
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EC-68
< SYSTEM DESCRIPTION >[HR16DE]
DIAGNOSIS SYSTEM (ECM)
*: Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.TEST ITEM
CONDITION JUDGMENTCHECK ITEM (REMEDY)
FUEL INJECTION • Engine: Return to the original trouble
condition
• Change the amount of fuel injection
using CONSULT. If trouble symptom disappears, see
CHECK ITEM.
• Harness and connectors
• Fuel injector
• Air fuel ratio (A/F) sensor 1
ENG COOLANT
TEMP • Engine: Return to the original trouble
condition
• Change the engine coolant tempera-
ture using CONSULT. If trouble symptom disappears, see
CHECK ITEM.• Harness and connectors
• Engine coolant temperature
sensor
• Fuel injector
PURG VOL CONT/V • Engine: After warming up, run engine
at 1,500 rpm.
• Change the EVAP canister purge vol-
ume control solenoid valve opening
percent using CONSULT. Engine speed changes according to
the opening percent.
• Harness and connectors
• Solenoid valve
FUEL/T TEMP SEN Change the fuel tank temperature using CONSULT.
COOLING FAN* • Ignition switch: ON
• Turn the cooling fan “LOW”, “HI” and
“OFF” CONSULT. Cooling fan moves and stops.
• Harness and connectors
• IPDM E/R (Cooling fan relay)
• Cooling fan motor
ALTERNATOR
DUTY • Engine: Idle
• Change duty ratio using CONSULT.
Battery voltage changes.• Harness and connectors
• IPDM E/R
•Alternator
FUEL PUMP RELAY • Ignition switch: ON
• Turn the fuel pump relay “ON” and
“OFF” using CONSULT and listen to
operating sound. Fuel pump relay makes the operat-
ing sound.
• Harness and connectors
•Fuel pump relay
IGNITION TIMING • Engine: Return to the original trouble
condition
• Timing light: Set
• Retard the ignition timing using CON- SULT. If trouble symptom disappears, see
CHECK ITEM.
Perform Idle Air Volume Learn-
ing.
POWER BALANCE • Engine: After warming up, idle the en-
gine.
• A/C switch OFF
• Shift lever: P or N (CVT), Neutral (M/
T)
• Cut off each fuel injector signal one at
a time using CONSULT. Engine runs rough or dies.
• Harness and connectors
• Compression
• Fuel injector
• Power transistor
• Spark plug
• Ignition coil
VENT CONTROL/V • Ignition switch: ON
• Turn solenoid valve ON and OFF with
the CONSULT and listen to operating
sound. Solenoid valve makes an operating
sound.
• Harness and connectors
• EVAP canister vent control
solenoid valve
INT V/T ASSIGN
ANGLE • Engine: Return to the original non-
standard condition
• Change intake valve timing using CONSULT. If malfunctioning symptom disap-
pears, see CHECK ITEM.
• Harness and connectors
• Intake valve timing control
solenoid valve
EX H V/T ASSIGN
ANGLE •
E

ngine: Return to the original non-
standard condition
• Change exhaust valve timing using CONSULT. If malfunctioning symptom disap-
pears, see CHECK ITEM.
• Harness and connectors
• Exhaust valve timing control
solenoid valve
ACTIVE GRILLE
SHUTTER NOTE:
Initial position learning is required every
time when the ignition switch is turned
OFF.
1. Engine: Idle speed
2. Touch “CALIBRTN” to perform ini-
tial position learning.
3. Touch “OPEN” or “CLOSE” to op- erate active grille shutter. Active grille shutter fully opens or
fully closes.
• Harness or connector
• Active grille shutter actuator
• Active grille shutter
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ECM
EC-73
< ECU DIAGNOSIS INFORMATION > [HR16DE]
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EXH/V TIM B1
• Engine: After warming up
• Selector lever position: P or N
(CVT) or Neutral (M/T)
• Air conditioner switch: OFF
•No load Idle
−5 ° - 5 °CA
When revving engine up to 2,000rpm
Quickly Approx. 0
° - 40 °CA
INT/V SOL(B1) • Engine: After warming up
• Selector lever position: P or N
(CVT) or Neutral (M/T)
• Air conditioner switch: OFF
•No load Idle
0% - 2%
When revving engine up to 2,000rpm
Quickly Approx. 0% - 90%
AIR COND RLY • Engine: After warming up, idle
the engine Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates.) ON
FUEL PUMP RLY • For 1 seconds after turning ignition switch: ON
• Engine running or cranking
ON
• Except above OFF
VENT CONT/V • Ignition switch: ON OFF
THRTL RELAY • Ignition switch: ON ON
COOLING FAN • Engine: After warning up, idle the
engine
• Air conditioner switch: OFF Engine coolant temperature is 98
°C
(208 °F) or less OFF
Engine coolant temperature is between
98 °C (208 °F) and 99° C (210°F) LOW
Engine coolant temperature is 100 °C
(212 °F) or more HIGH
HO2S2 HTR (B1) • Engine speed: Below 3,600 rpm after the following conditions are met.
- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load ON
ALT DUTY SIG • Power generation voltage variable control: Operating
ON
• Power generation voltage variable control: Not operating OFF
I/P PULLY SPD • Vehicle speed: More than 20 km/h (12 MPH) Almost the same speed as
the tachometer indication
VEHICLE SPEED • Turn drive wheels and compare CONSULT value with the speedometer indi-
cation. Almost the same speed as
speedometer indication
IDL A/V LEARN • En gine: running Idle air volume learning has not been per-
formed yet.
YET
Idle air volume learning has already been
performed successfully. CMPLT
TRVL AFTER MIL • Ignition switch: ON Vehicle has traveled after MIL has turned
ON.0 - 65,535 km
(0 - 40,723 miles)
ENG OIL TEMP • Engine: After warming up More than 70°C (158F)
A/F S1 H TR
(B1) •

Engine: After warming up, idle the engine
(More than 140 seconds after starting engine) 4 - 100%
VHCL SPEED SE • Turn drive wheels and compare CONSULT value with the speedometer indi-
cation. Almost the same speed as
speedometer indication
SET VHCL SPD • Engine: Running ASCD: OperatingThe preset vehicle speed is
displayed
MAIN SW • Ignition switch: ON MAIN switch: Pressed
ON
MAIN switch: Released OFF
CANCEL SW • Ignition switch: ON CANCEL switch: Pressed
ON
CANCEL switch: Released OFF
Monitor Item
Condition Values/Status
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