文档介绍：1NZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM EC–1
EMISSIONENGINE1NZ-FE EMISSION CONTROL CONTROL SYSTEM
PARTS LOCATION
PURGE LINE
FUEL VAPOR FEED FUEL TANK
HOSE
REFUELING
VALVE
CANISTER EC
PURGE VSV FUEL VAPOR FEED
HOSE
CANISTER FILTER
CANISTER PRESSURE SENSOR PUMP MODULE
AIR INLET PORT
LEAK DETECTION PUMP
FUEL TANK CAP
VENT VALVE
A119185E01
EC–2 1NZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM
for Hatchback:
EC
CANISTER
FUEL TANK CAP
HEATED OXYGEN SENSOR
PURGE VSV
AIR FUEL RATIO SENSOR
A117786E01
1NZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM EC–3
for Sedan:
EC
CANISTER FUEL TANK CAP
HEATED OXYGEN SENSOR
AIR FUEL RATIO SENSOR
VACUUM SWITCHING VALVE
A133333E01
EC–4 1NZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM
ON-VEHICLE INSPECTION
1. INSPECT FUEL CUT-OFF RPM
(a) Start and warm up the engine.
(b) Increase the engine speed to approximately 3,500
rpm.
(c) Using a sound scope, check the operation sound of
the injector.
(d) Release the accelerator pedal. Check that the
operation noise stops momentarily and then
resumes.
2. VISUALLY INSPECT HOSES, CONNECTIONS AND
GASKETS
(a) Check that there are no cracks, leakage or
scratches on the hoses, connections or gaskets.
HINT:
• Removing the oil level gauge, oil filter cap or
PCV hose may cause the engine to malfunction
EC or stall.
• Disconnections, looseness or cracks in the parts
B000412E01 of the air induction system between the intake
system and cylinder head will allow air suction
and cause the engine to run improperly.
3. CHECK LINE AND CONNECTORS
(a) Visually check for loose connections, sharp bends
and damage.
4. CHECK FUEL TANK ASSEMBLY
(a) Visually check for deformation, cracks and fuel
leakage.
5. CHECK FUEL TANK AND VENT LINE
Vent Line Hose
Fuel Tank Cap
Canister
A119153E01
(a) Disconnect the vent line hose from the canister.
(b) Connect the pressur