engine control system NISSAN TIIDA 2011 Service Repair Manual

EC-50
< FUNCTION DIAGNOSIS >[HR16DE]
MULTIPORT FUEL INJECTION SYSTEM
Component Parts Location
INFOID:0000000006141219
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 injector6. Cooling fan motor
7. Camshaft position sensor (PHASE) 8. IPDM E/R 9. ECM
10. Mass air flow sensor (with intake air 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
PBIB2939E
Revision: May 2010 2011 Versa

MULTIPORT FUEL INJECTION SYSTEMEC-51
< FUNCTION DIAGNOSIS > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
1. Mass air flow sensor
(with intake air temperature sensor) 2. Engine coolant temperature sensor 3. Electric throttle control actuator
4. Camshaft position sensor (PHASE) 5. Ignition coil (with power transistor) 6. Fuel injector
7. EVAP canister purge volume control solenoid valve
Vehicle front
PBIB2940E
Revision: May 2010 2011 Versa

EC-56
< FUNCTION DIAGNOSIS >[HR16DE]
ELECTRIC IGNITION SYSTEM
ELECTRIC IGNITION SYSTEM
System DiagramINFOID:0000000005929771
System DescriptionINFOID:0000000005929772
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 si gnals are transmitted to the power transistor.
During the following conditions, the ignition timing is re vised 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
JMBIA2194GB
Sensor Input signal to ECMECM functionActuator
Crankshaft position sensor (POS) Engine speed*
2
Piston position
Ignition timing
controlIgnition 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 sensorEngine knocking
Park/neutral position (PNP) switch (M/T)
Transmission range switch (A/T) Gear position
ABS actuator and electric unit (control unit) Vehicle speed*
1Combination meter
Revision: May 2010 2011 Versa

ELECTRIC IGNITION SYSTEMEC-57
< FUNCTION DIAGNOSIS > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
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 LocationINFOID:0000000006141218
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 injector6. Cooling fan motor
7. Camshaft position sensor (PHASE) 8. IPDM E/R 9. ECM
10. Mass air flow sensor (with intake air 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
PBIB2939E
Revision: May 2010 2011 Versa

EC-58
< FUNCTION DIAGNOSIS >[HR16DE]
ELECTRIC IGNITION SYSTEM
1. Mass air flow sensor
(with intake air temperature sensor) 2. Engine coolant temperature sensor 3. Electric throttle control actuator
4. Camshaft position sensor (PHASE) 5. Ignition coil (with power transistor) 6. Fuel injector
7. EVAP canister purge volume control solenoid valve
Vehicle front
PBIB2940E
Revision: May 2010 2011 Versa

AIR CONDITIONING CUT CONTROLEC-63
< FUNCTION DIAGNOSIS > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
AIR CONDITIONING
CUT CONTROL
System DiagramINFOID:0000000005929775
System DescriptionINFOID:0000000005929776
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
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
• When the accelerator pedal is fully depressed.
• When cranking the engine.
• At high engine speeds.
• When the engine coolant temperature becomes excessively high.
JMBIA2195GB
Sensor Input Signal to ECMECM functionActuator
Air conditioner switch*
1Air conditioner ON signal
Air conditioner
cut controlIPDM E/R
↓
Air conditioner relay
↓
Compressor
Accelerator pedal position sensor
Accelerator pedal position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
2
Engine coolant temperature sensor
Engine coolant temperature
Battery Battery voltage*
2
Refrigerant pressure sensorRefrigerant pressure
EPS control unit Power steering operation
ABS actuator and electric unit (control unit) Vehicle speed*
1
Combination meter
BCMAir conditioner ON signal*
1
Revision: May 2010 2011 Versa

COOLING FAN CONTROLEC-71
< FUNCTION DIAGNOSIS > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
COOLING FAN CONTROL
System DiagramINFOID:0000000005929780
System DescriptionINFOID:0000000005929781
INPUT/OUTPUT SIGNAL CHART
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM via the CAN communication line.
SYSTEM DESCRIPTION
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pres-
sure, air conditioner ON signal. Then control
system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
JMBIA2196GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
1
Cooling fan
controlIPDM E/R
↓
Cooling fan relay
↓
Cooling fan motor
Battery
Battery voltage*
1
ABS actuator and electric unit (control unit)
Vehicle speed*2Combination meter
Engine coolant temperature sensorEngine coolant temperature
BCM Air conditioner ON signal*
2
Refrigerant pressure sensorRefrigerant pressure
Revision: May 2010 2011 Versa

EVAPORATIVE EMISSION SYSTEMEC-79
< FUNCTION DIAGNOSIS > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
EVAPORATIVE EMISSION SYSTEM
System DiagramINFOID:0000000005929784
System DescriptionINFOID:0000000005929785
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM via the CAN communication line.
JMBIA2197GB
Sensor
Input signal to ECMECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
1
EVAP canister
purge flow controlEVAP canister purge vol-
ume control solenoid valve
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Battery Battery voltage*
1
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Fuel tank temperature sensor Fuel temperature in fuel tank
EVAP control system pressure sensor Pressure in purge line
ABS actuator and electric unit (control unit)
Vehicle speed*
2
Combination meter
Revision: May 2010 2011 Versa

EC-80
< FUNCTION DIAGNOSIS >[HR16DE]
EVAPORATIVE EMISSION SYSTEM
SYSTEM DESCRIPTION
The evaporative emission system is used to reduce hydr
ocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplis hed by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into t he EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not oper ating 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 contro l 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 al so shuts off the vapor purge line during decelerating.
EVAPORATIVE EMISSION LINE DRAWING
PBIB3639E
Revision: May 2010 2011 Versa

EVAPORATIVE EMISSION SYSTEMEC-83
< FUNCTION DIAGNOSIS > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Component Parts LocationINFOID:0000000006141215
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 injector6. Cooling fan motor
7. Camshaft position sensor (PHASE) 8. IPDM E/R 9. ECM
10. Mass air flow sensor (with intake air 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
PBIB2939E
Revision: May 2010 2011 Versa