Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Echo 2000-2002 Approved techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 02echorm ec ecsy purp

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                                                                                                                                     EC-1
                                           EMISSION CONTROL      -    EMISSION CONTROL SYSTEM


EMISSION CONTROL SYSTEM
                                                                                                                                     EC02E-01


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                      Abbreviation                                      Function
(1) Positive Crankcase Ventilation                   PCV             Reduces HC
(2) Evaporative Emission Control                     EVAP            Reduces evaporated HC
(3) Three-way Catalytic Converter                    TWC             Reduces HC, CO and NOx
(4) Sequential Multiport Fuel Injection*              SFI            Injects a precisely timed, optimum amount of fuel for reduced
                                                                     exhaust emissions

Remark: *For inspection and repair of the SFI system, refer to the SF section of this manual.




2002 ECHO (RM884U)

                                                                              Author :                     Date :                    700

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