Fuel and Emissions Systems

System Descriptions (cont'd)

11-24  

Intake Air System

Refer to the System Diagram to see the functional layout of the system.

Throttle Body

The throttle body is a single-barrel side draft type. The lower portion of the IAC valve is heated by engine coolant from the cylinder head.

  1. TP SENSOR
  2. IAC VALVE

Intake Air Bypass Control Thermal Valve

When the engine is running, the intake air bypass control thermal valve sends air to the injector.

  1. OUT
  2. VALVE
  3. IN
  4. WAX ELEMENT
  5. INTAKE AIR BYPASS CONTROL THERMAL VALVE
  6. INJECTOR

Catalytic Converter System

Three Way Catalytic Converter (TWC)

The TWC converts hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx) in the exhaust gas to carbon dioxide (CO2), dinitrogen (N2), and water vapour.

  1. HOUSING
  2. THREE WAY CATALYSIS
  3. FRONT OF VEHICLE