Air Pump Components

Air Pump Components:

The system includes the following components:
^ The AIR pump - The AIR pump assembly is mounted in the right rear corner of the engine compartment and supplies the air to the AIR system. The electric air pump sends air to the check valves near the exhaust manifolds. The AIR pump is controlled by the powertrain control module (PCM) through the AIR pump solenoid relay. Battery voltage to the AIR pump is controlled by the AIR pump solenoid relay. A vacuum operated shut off valve prevents air flow during OFF periods. When the PCM provides a ground circuit for the secondary AIR pump solenoid relay, battery voltage applies power to the AIR pump and the solenoid. Intake manifold vacuum is then applied through the solenoid to the vacuum operated shut off valve. The vacuum operated shut-off valve then opens up and allows air to be delivered to the check valves.
^ The AIR solenoid - The AIR solenoid is activated by the AIR pump solenoid relay. The activated AIR solenoid allows intake manifold vacuum to the shut off valve. The shut-off valve then opens allowing air flow.
^ The shut - off valve - The AIR shut-off valve allows air to be delivered to the AIR system. The shut-off valve is vacuum operated through the solenoid. The shut-off valve is normally closed. When the AIR pump solenoid relay is activated by the PCM, vacuum is applied through the solenoid and to the shut-off valve.
^ The AIR pump solenoid relay - The PCM controls the operation of the AIR system through the AIR pump solenoid relay. When the PCM provides a ground circuit for the secondary AIR pump solenoid relay, battery voltage is allowed to power up the AIR pump and the solenoid.
^ The check valves - The check valves prevent the back flow of hot exhaust gases getting to the AIR pump.
^ The necessary plumbing:
- Hoses
- Vacuum lines
- Pipes
- Clamps