#
SECONDARY AIR INJECTION (AIR) SOLENOID VALVE CONSTRUCTION/OPERATION

BHE011618740T02

• Mainly consists of a coil, spring, plunger, and filter.

When Energized

  • The solenoid coil becomes an electromagnet and pulls in the plunger. This opens an airflow path between ports A and B, applying intake manifold negative pressure to the actuator of the AIR control valve.

When Not Energized

  • The path of intake manifold negative pressure is closed, and the path between B and C is opened, causing the actuator of the AIR control valve to be open to the atmosphere.

1 | When energized
2 | When not energized
3 | Coil
4 | Plunger
5 | Spring
6 | Flow of intake manifold negative pressure
7 | AIR solenoid valve
8 | PCM