Nissan Cube. Manual — part 291
EC-50
< SYSTEM DESCRIPTION >
[MR18DE]
MULTIPORT FUEL INJECTION SYSTEM
Component Description
INFOID:0000000009947201
4.
EVAP canister
5.
EVAP canister vent control valve
6.
Drain filter
Vehicle front
Component
Reference
A/F sensor 1
Accelerator pedal position sensor
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
Engine coolant temperature sensor
Fuel injector
Heated oxygen sensor 2
Intake air temperature sensor
Knock sensor
Mass air flow sensor
Park/neutral position switch (M/T models)
Transmission range switch (CVT models)
Throttle position sensor
ELECTRIC IGNITION SYSTEM
EC-51
< SYSTEM DESCRIPTION >
[MR18DE]
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ELECTRIC IGNITION SYSTEM
System Diagram
INFOID:0000000009947202
System Description
INFOID:0000000009947203
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM via the CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
Ignition order: 1 - 3 - 4 - 2
The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the
engine. The ignition timing data is stored in the ECM.
The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) sig-
nal. Computing this information, ignition signals are transmitted to the power transistor.
During the following conditions, the ignition timing is revised by the ECM according to the other data stored in
the ECM.
• At starting
• During warm-up
• At idle
• At low battery voltage
• During acceleration
JMBIA2932GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*
2
Piston position
Ignition timing
control
Ignition coil (with
power transistor)
Camshaft position sensor (PHASE)
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor
Engine coolant temperature
Throttle position sensor
Throttle position
Accelerator pedal position sensor
Accelerator pedal position
Battery
Battery voltage*
2
Knock sensor
Engine knocking
Park/neutral position (PNP) switch (M/T models)
Gear position
Transmission range switch (CVT models)
Gear position
ABS actuator and electric unit (control unit)
Vehicle speed*
1
EC-52
< SYSTEM DESCRIPTION >
[MR18DE]
ELECTRIC IGNITION SYSTEM
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Component Parts Location
INFOID:0000000009947204
1.
Ignition coil (with power transistor)
and spark plug
2.
Intake valve timing control solenoid
valve
3.
Fuel injector
4.
Refrigerant pressure sensor
5.
Knock sensor
6.
Camshaft position sensor (PHASE)
7.
Engine coolant temperature sensor
8.
Cooling fan motor
9.
Battery current sensor
10. IPDM E/R
11.
ECM
12. Mass air flow sensor (with intake air
temperature sensor)
13. Electric throttle control actuator
(with built in throttle position sensor
and throttle control motor)
14. EVAP canister purge volume control
solenoid valve
JMBIA2296ZZ
ELECTRIC IGNITION SYSTEM
EC-53
< SYSTEM DESCRIPTION >
[MR18DE]
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1.
ECM
2.
IPDM E/R
3.
Fuel pump fuse (15 A)
Vehicle front
1.
Electric throttle control actuator
(with built-in position sensor, throttle
control motor)
2.
Throttle valve
Vehicle front
1.
Battery current sensor
2.
Mass air flow sensor
(with Intake air temperature sensor)
Vehicle front
JMBIA2297ZZ
JMBIA2298ZZ
JMBIA2299ZZ
JMBIA2300ZZ
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