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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 the table below.

Fig 1: Emission Control System Abbreviation Chart
G02630920Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Remark (* ): For the inspection and repair of the SFI system, refer to SFI .