The system supplies air to the engine. It consists of an air intake pipe, an air filter (ACL), air duct, throttle body (TV), idle air control valve (IAC) and intake manifold. A resonator built into the air intake pipe provides additional sound insulation when air is drawn into the system (top right picture).
1. black and yellow wire; 2. from the PGM-R main relay; 3. various sensors; 4. black wire; 5. orange wire; 6. black and blue wire; 7. air filter (ACL); 8. resonator; 9. air duct; 10. throttle body; 11. intake manifold; 12. engine coolant