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

EC-180, "Description"

Accelerator pedal position sensor

EC-383, "Description"

Camshaft position sensor (PHASE)

EC-245, "Description"

Crankshaft position sensor (POS)

EC-241, "Description"

Engine coolant temperature sensor

EC-163, "Description"

Fuel injector

EC-406, "Description"

Heated oxygen sensor 2

EC-190, "Description"

Intake air temperature sensor

EC-161, "Description"

Knock sensor

EC-239, "Description"

Mass air flow sensor

EC-147, "Description"

Park/neutral position switch (M/T models)

EC-317, "Description"

Transmission range switch (CVT models)

Throttle position sensor

EC-169, "Description"

ELECTRIC IGNITION SYSTEM

EC-51

< SYSTEM DESCRIPTION >

[MR18DE]

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ELECTRIC IGNITION SYSTEM

System Diagram

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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

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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 >

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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