2010 NISSAN LATIO Lan system

EC-46
< FUNCTION DIAGNOSIS >[HR16DE]
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 LocationINFOID:0000000005398258
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: January 20102010 Versa

ELECTRIC IGNITION SYSTEMEC-47
< 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: January 20102010 Versa

EC-50
< FUNCTION DIAGNOSIS >[HR16DE]
ELECTRIC IGNITION SYSTEM
Component Description
INFOID:0000000005398259
1. Cooling fan motor harness connec- tor 2. Crankshaft position sensor
3. Stop lamp switch
4. Brake pedal 5. Accelerator pedal position sensor
harness connector 6. Accelerator pedal position sensor
7. Accelerator pedal 8. Fuel level sensor unit and fuel pump
harness connector (view with in-
spection hole cover removed) 9. Fuel pressure regulator
10. Fuel pump
AWBIA0044ZZ
Component Reference
Accelerator pedal position sensor EC-392, "
Description"
Camshaft position sensor (PHASE)EC-262, "Description"
Crankshaft position sensor (POS)EC-257, "Description"
Engine coolant temperature sensorEC-161, "Description"
Revision: January 20102010 Versa

EC-52
< FUNCTION DIAGNOSIS >[HR16DE]
AIR CONDITIONING CUT CONTROL
AIR CONDITIONING CUT CONTROL
System DiagramINFOID:0000000005398260
System DescriptionINFOID:0000000005398261
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 operati
on 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 temperat ure becomes excessively high.
JMBIA2195GB
Sensor Input Signal to ECMECM functionActuator
Air conditioner switch*
1Air conditioner ON signal
Air conditioner
cut controlIPDM E/R
↓
Air conditio
ner 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
BCM Air conditioner ON signal*
1
Revision: January 20102010 Versa

CAN COMMUNICATIONEC-59
< FUNCTION DIAGNOSIS > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
CAN COMMUNICATION
System DescriptionINFOID:0000000005398264
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each
control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-27, "
CAN Communication Signal Chart", about CAN communication for detail.
Revision: January 20102010 Versa

EC-60
< FUNCTION DIAGNOSIS >[HR16DE]
COOLING FAN CONTROL
COOLING FAN CONTROL
System DiagramINFOID:0000000005398265
System DescriptionINFOID:0000000005398266
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 contro l system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
JMBIA2196GB
SensorInput 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: January 20102010 Versa

EC-68
< FUNCTION DIAGNOSIS >[HR16DE]
EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION SYSTEM
System DiagramINFOID:0000000005398269
System DescriptionINFOID:0000000005398270
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 fe
edback 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: January 20102010 Versa

EC-72
< FUNCTION DIAGNOSIS >[HR16DE]
EVAPORATIVE EMISSION SYSTEM
Component Parts Location
INFOID:0000000005398271
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: January 20102010 Versa