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Nissan Juke (2016 year). Service Repair Manual - part 229

SYSTEM

EC-647

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

THERMAL MANAGEMENT CONTROL
THERMAL MANAGEMENT CONTROL : System Description

INFOID:0000000012198222

SYSTEM DIAGRAM

*1: For CVT models

SYSTEM DESCRIPTION

The multi-way control valve changes the paths to heater & EGR cooler, oil cooler, and radiator according to

engine coolant temperature and driving conditions.

When coolant temperature is low, the paths to heater & EGR cooler, oil cooler, and radiator are closed and

coolant is circulated only inside the engine to accelerate engine warm-up.

When coolant temperature is high, the paths to heater & EGR cooler, oil cooler, and radiator are opened and

coolant is refrigerated. This raises the coolant temperature and oil temperature rapidly and improves the fuel

economy by reducing friction among parts.

Operation

When the ignition switch is OFF, the valve is fully closed to accelerate bleeding the coolant channels.

JSBIA5422GB

Revision: November 2015

2016 JUKE

EC-648

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

SYSTEM

When receiving a blower fan ON signal and/or an A/C ON signal, ECM opens the flow path to the heater &

EGR cooler even when coolant temperature is low.

A: Closes all flow paths , , and and circulates coolant only inside the engine.

B: Opens the flow path to Heater & EGR cooler and circulates coolant to Heater & EGR cooler.

C: Opens the flow path to oil cooler and circulates coolant to Heater & EGR cooler and oil cooler.

D: Opens the flow path to radiator and circulates coolant to Heater & EGR cooler, oil cooler, and radiator.
E: Opens all the flow paths , , and .

The high coolant temperature control is performed by opening/closing the flow path to the radiator to raise the

engine oil temperature even when the coolant temperature is high. When engine load is high, the high coolant

temperature control is not performed because of the knocking control.

When detecting a malfunction in multi-way control valve, ECM fully opens the valve to secure cooling paths.

STARTER MOTOR DRIVE CONTROL

Valve position

Heater & EGR

cooler

Oil cooler

Radiator

Full close

Open

Full close

Full open

Open

Full close

Full open

Open

Full open

JSBIA5657GB

JSBIA5434GB

Revision: November 2015

2016 JUKE

SYSTEM

EC-649

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

STARTER MOTOR DRIVE CONTROL : System Diagram

INFOID:0000000012198223

STARTER MOTOR DRIVE CONTROL : System Description

INFOID:0000000012198224

INPUT/OUTPUT SIGNAL CHART

SYSTEM DESCRIPTION

When rapid deceleration occurs during engine runs or idle speed decreases due to heavy load conditions,

ECM detects a decrease in idle speed and restarts the engine to secure reliability in handleability by transmit-

ting a cranking request signal to IPDM E/R for activating the starter motor under the following conditions:

• Selector lever: P or any position other than N

• Idle switch: ON (Accelerator pedal not depressed)

• Brake switch: ON (Brake pedal depressed)

On the other hand, models with the Intelligent Key System transmit a control signal to IPDM E/R by way of

BCM via CAN communication.

IPDM E/R detects an operating state of the starter motor relay and the starter motor control relay and trans-

mits a feed back signal to ECM via CAN Communication.

EVAPORATIVE EMISSION SYSTEM

JSBIA5976GB

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)

• Engine speed
• Piston position

Starter motor
drive control

• BCM
• IPDM E/R

(Starter relay & start-
er control relay)

Camshaft position sensor (PHASE)

Engine coolant temperature sensor

Engine coolant temperature

Accelerator pedal position sensor

Accelerator pedal position

Transmission range switch

Gear position

Stop lamp switch

Brake pedal position

Combination meter

CAN commu-
nication

Vehicle speed signal

Revision: November 2015

2016 JUKE

EC-650

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

SYSTEM

EVAPORATIVE EMISSION SYSTEM : System Diagram

INFOID:0000000012198225

EVAPORATIVE EMISSION SYSTEM : System Description

INFOID:0000000012198226

INPUT/OUTPUT SIGNAL CHART

*: ECM determines the start signal status by the signals of engine speed and battery voltage.

JPBIA4896GB

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)

• Engine speed*
• Piston position

EVAP canister
purge flow control

EVAP canister purge vol-
ume control solenoid valve

Camshaft position sensor (PHASE)

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Air fuel ratio (A/F) sensor 1

Density of oxygen in exhaust gas
(Mixture ratio feedback signal)

Throttle position sensor

Throttle position

Accelerator pedal position sensor

Accelerator pedal position

Battery

Battery voltage*

Fuel tank temperature sensor

Fuel temperature in fuel tank

EVAP control system pressure sensor

Pressure in purge line

Combination meter

CAN
commu-
nication

Vehicle speed

Revision: November 2015

2016 JUKE

SYSTEM

EC-651

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

SYSTEM DESCRIPTION

The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel

system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.

The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the

vapor is stored there when the engine is not operating or when refueling to the fuel tank.

The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the

engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the

engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is

proportionally regulated as the air flow increases.

EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating.

ALTERNATOR POWER GENERATION VOLTAGE VARIABLE CONTROL SYS-
TEM
ALTERNATOR POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM :
System Description

INFOID:0000000012198227

The alternator power generation voltage variable control system controls the amount of power generation,

according to a battery loaded condition. ECM judges a battery condition, according to a signal received from

the battery current sensor which detects a charge/discharge current. ECM then transmits a signal to IPDM E/

R to command power generation via CAN communication. IPDM E/R transmits a power generation control sig-

nal to the alternator so that the system can control the amount of power generation. The voltage of power gen-

eration is lowered during battery low-load conditions and boosted under heavy load conditions. In this way, the

system reduces the engine load through the adequate power generation control.

FUEL FILLER CAP WARNING SYSTEM

PBIB3639E

Revision: November 2015

2016 JUKE

EC-652

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

SYSTEM

FUEL FILLER CAP WARNING SYSTEM : System Diagram

INFOID:0000000012198228

FUEL FILLER CAP WARNING SYSTEM : System Description

INFOID:0000000012198229

INPUT/OUTPUT SIGNAL CHART

Input

*: This signal is sent to the ECM via the CAN communication line.

Output

*: This signal is sent to the combination meter via the CAN communication line.

SYSTEM DESCRIPTION

The fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and

malfunction occurrences after refueling, by turning ON the fuel filler cap warning display on the combination

meter.

ECM judges a refueled state, based on a fuel level signal transmitted from the combination meter.

When a very small leak is detected through the EVAP leak diagnosis performed after judging the refueled

state, ECM transmits a fuel filler cap warning display signal (request for display ON) to the combination meter

via CAN communication.

When receiving the signal, the combination meter turns ON the fuel filler cap warning display.

CAUTION:

Check fuel filler cap installation condition when the fuel filler cap warning display turns ON.

Reset Operation

The fuel filler cap warning lamp tunes OFF, according to any condition listed below:

• Reset operation is performed by operating the meter control switch on the combination meter. Refer to

MWI-

20, "Switch Name and Function"

- When the reset operation is performed, the combination meter transmits a fuel filler cap warning reset signal

to ECM via CAN communication. ECM transmits a fuel filler cap warning display signal (request for display

OFF) to the combination meter via CAN communication. When receiving the signal, the combination meter

turns OFF the fuel filler cap warning display.

• EVAP leak diagnosis result is normal.

• Fuel refilled.

• DTC erased by using CONSULT.

Unit/Sensor

Input signal to ECM

ECM function

EVAP control system pressure sensor

Pressure in purge line

Fuel filler cap warning control

Combination meter

Fuel level

Fuel filler cap warning reset signal

JSBIA0797GB

Unit

Output signal

Actuator

ECM

Fuel filler cap warning display signal

Combination meter

Revision: November 2015

2016 JUKE

SYSTEM

EC-653

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

NOTE:

MIL turns ON if a malfunction is detected in leak diagnosis results again at the trip after the fuel filler cap warn-

ing display turns ON/OFF.

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : System Diagram

INFOID:0000000012198230

AUTOMATIC SPEED CONTROL DEVICE (ASCD) : System Description

INFOID:0000000012198231

INPUT/OUTPUT SIGNAL CHART

*1: M/T models
*2: CVT models

BASIC ASCD SYSTEM

Refer to Owner's Manual for ASCD operating instructions.

Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed

without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/

h (25 MPH) and 144km/h (90 MPH).

ECM controls throttle angle of electric throttle control actuator to regulate engine speed.

Operation status of ASCD is indicated by CRUISE indicator and SET indicator in combination meter. If any

malfunction occurs in ASCD system, it automatically deactivates control.

Refer to

EC-656, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Switch Name and Function"

for ASCD

operating instructions.

NOTE:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

INTEGRATED CONTROL SYSTEM

JPBIA4713GB

Sensor

Input signal to ECM

ECM function

Actuator

Brake pedal position switch

Brake pedal operation

ASCD vehicle speed
control

Electric throttle control
actuator

Stop lamp switch

Clutch pedal position switch

Clutch pedal operation

ASCD steering switch

ASCD steering switch operation

Transmission range switch

Gear position

Park/neutral position (PNP) switch

Combination meter

CAN commu-
nication

Vehicle speed signal

TCM

CAN commu-
nication

Output shaft revolution signal

Revision: November 2015

2016 JUKE

EC-654

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

SYSTEM

INTEGRATED CONTROL SYSTEM : System Diagram

INFOID:0000000012198232

CVT models

M/T models

INTEGRATED CONTROL SYSTEM : System Description

INFOID:0000000012198233

CVT models

System Description

TCM transmits a drive mode select signal to ECM via CAN communication, according to a NORMAL mode

signal, SPORT mode signal, or ECO mode signal received from the multi display unit via CAN communication.

ECM controls torque and throttle opening angle characteristics appropriate for each mode, based on a

received drive mode select signal.

NOTE:

• Because of the multi display unit operation, the display may indicate that the mode is switching. However,

the mode may not actually switch due to CAN communication error.

• When a CAN communication error occurs between ECM and TCM, the mode switches to NORMAL mode.

M/T models

System Description

ECM controls torque and throttle opening angle characteristics appropriate for each mode, based on a NOR-

MAL mode signal, SPORT mode signal, or ECO mode signal received from the multi display unit via CAN

communication.

NOTE:

• Because of the multi display unit operation, the display may indicate that the mode is switching. However,

the mode may not actually switch due to CAN communication error.

JPBIA4714GB

JPBIA4763GB

Revision: November 2015

2016 JUKE

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