EMISSION CONTROL SYSTEM GENERAL

  1. OUTLINE

    1. Exhaust Emission Control System

      1. Three-Way Catalytic converters (TWCs) are used in order to reduce exhaust emissions.

      2. The ECM controls fuel injection volume based on the signals from the air fuel ratio sensor and oxygen sensor, optimizing the exhaust emissions.

    2. Evaporative Emission Control System

      1. The evaporative emission control system prevents the fuel vapor that is created in the fuel tank assembly from being released directly into the atmosphere.

      2. The canister stores the fuel vapor that has been created in the fuel tank assembly.

      3. This system consists of a purge VSV, charcoal canister assembly, canister pump module, and ECM.

      4. The ECM controls the purge VSV in accordance with the driving conditions in order to direct the fuel vapor into the engine, where it is burned.

      5. In this system, the ECM checks for evaporative emission leaks and stores Diagnostic Trouble Codes (DTCs) in the event of a malfunction. An evaporative emission leak check consists of an application of vacuum to the evaporative emission system and the ECM monitoring the system for changes in pressure in order to detect a leak.

      6. The canister pressure sensor is included in the canister pump module.

      7. A canister filter is provided on the fresh air line. This air filter is maintenance-free.

  2. MAJOR DIFFERENCE

    1. The 2013 models have been modified from the 2012 models as shown below:

      1. A description of the fuel tank cap assembly has been added.