Nissan Tiida C11. Instruction — part 516
EC-714
< FUNCTION DIAGNOSIS >
[MR18DE]
ELECTRIC IGNITION SYSTEM
ELECTRIC IGNITION SYSTEM
System Diagram
INFOID:0000000001161727
System Description
INFOID:0000000001161728
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
Firing 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
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
JMBIA0174GB
Sensor
Input Signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*
2
Piston position
Ignition timing
control
Ignition coil (with power transis-
tor)
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 condition
Park/neutral position (PNP) switch
Gear position
Combination meter*
1
Vehicle speed
ELECTRIC IGNITION SYSTEM
EC-715
< FUNCTION DIAGNOSIS >
[MR18DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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:0000000001603911
1.
Ignition coil (with power transistor)
and spark plug
2.
Intake valve timing control solenoid
valve
3.
Refrigerant pressure sensor
4.
Knock sensor
5.
Fuel injector
6.
Cooling fan motor
7.
Camshaft position sensor (PHASE)
8.
IPDM E/R
9.
ECM
10. Mass air flow sensor (with intake
temperature sensor)
11.
Engine coolant temperature sensor
12. Electric throttle control actuator
(with built in throttle position sensor
and throttle control motor)
13. EVAP canister purge volume control
solenoid valve
PBIB3261E
EC-716
< FUNCTION DIAGNOSIS >
[MR18DE]
ELECTRIC IGNITION SYSTEM
1.
Mass air flow sensor
(with intake air temperature sensor)
2.
Engine coolant temperature sensor
3.
Electric throttle control actuator
(with built in throttle position sensor,
throttle control motor)
4.
PCV valve
5.
Cooling fan motor
6.
Resistor
7.
Refrigerant pressure sensor
BBIA0724E
ELECTRIC IGNITION SYSTEM
EC-717
< FUNCTION DIAGNOSIS >
[MR18DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
1.
Intake valve timing control solenoid
valve
2.
Knock sensor
3.
IPDM E/R
4.
Fuel pump fuse
5.
Fuel level sensor unit and fuel pump
harness connector
(view with inspection hole cover re-
moved)
6.
Fuel level sensor unit and fuel pump
7.
Fuel pressure regulator
8.
Fuel level sensor
9.
Fuel tank temperature sensor
10. Ignition coil
11.
Fuel injector
BBIA0735E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст