Emission Control System - Toyota Celica 2005 Repair Manual

EMISSION CONTROL SYSTEM

PURPOSE
The emission control systems are installed to reduce the amount of CO, HC and NOx exhausted from the
engine ((3) and (4)), to prevent the atmospheric release of blow−by gas−containing HC (1) and evaporated
fuel containing HC being released from the fuel tank (2).
The function of each system is shown in these table.
System
(1) Positive Crankcase Ventilation
(2) Evaporative Emission Control
(3) Three−way Catalytic Converter
(4) Sequential Multi−port Fuel Injection*
Remark: *For inspection and repair of the SFI system, refer to the SF section of this manual.
2005 CELICA (RM1131U)
EMISSION CONTROL −
Abbreviation
PCV Reduces HC
EVAP Reduces evaporated HC
TWC Reduces HC, CO and NOx
SFI Injects a precisely timed, optimum amount of fuel for reduced
exhaust emissions
1503
EMISSION CONTROL SYSTEM
Function
EC−1
EC02E−16