NISSAN LATIO 2009 Service Repair Manual

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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 accompli shed 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 control 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

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NOTE:
Do not use soapy water or any type of solvent while installing vacuum hose or purge hoses.
1. EVAP control system pressure sensor 2. EVAP
canister 3. EVAP canister vent control valve
A. To previous figure

EC-78< FUNCTION DIAGNOSIS >
[HR16DE]
EVAPORATIVE EMISSION SYSTEM
Component Parts Location INFOID:0000000004780033
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 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

EVAPORATIVE EMISSION SYSTEM
EC-79
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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

EC-80< FUNCTION DIAGNOSIS >
[HR16DE]
EVAPORATIVE EMISSION SYSTEM
1. ECM harness connectors 2. ECM 3. IPDM E/R
4. Fuel pump fuse (15A) 5. Intake valve timing control solenoid valve6. Knock sensor
7. Refrigerant pressure sensor 8. PCV valve Vehicle front PBIB2941E

EVAPORATIVE EMISSION SYSTEM
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1. Air fuel ratio (A/F) sensor 1 2. Three way catalyst (Manifold) 3. Heated oxygen sensor 2
4. Three way catalyst (Under flloor) 5. Muffler
Vehicle front
1. Exhaust manifold 2. Air fuel ratio (A/F) sensor 1 3. Heated oxygen sensor 2
4. Heated oxygen sensor 2 harness connector
Vehicle front JMBIA2192ZZ
PBIB2943E

EC-82< FUNCTION DIAGNOSIS >
[HR16DE]
EVAPORATIVE EMISSION SYSTEM
Component Description INFOID:0000000004780034
1. Cooling fan motor harness connec-
tor 2. Crankshaft position sensor 3. Stop lamp switch
4. Brake pedal 5. Accelerator pedal position sensor harness connector6. 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
A/F sensor 1 EC-182, " Description "
Accelerator pedal position sensor
EC-399, " Description "
Camshaft position sensor (PHASE)
EC-268, " Description "
Crankshaft position sensor (POS)
EC-263, " Description "

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Engine coolant temperature sensor
EC-167, " Description "
EVAP canister purge volume control solenoid valve
EC-291, " Description "
EVAP control system pressure sensor
EC-312, " Description "
Fuel tank temperature sensor
EC-240, " Description "
Mass air flow sensor
EC-148, " Description "
Throttle position sensor
EC-171, " Description "Component Reference