Nissan Juke F15. Instruction — part 459
SYSTEM
EC-649
< SYSTEM DESCRIPTION >
[MR EXCEPT FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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
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
SYSTEM
EC-651
< SYSTEM DESCRIPTION >
[MR EXCEPT FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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
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
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
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