Air Injection Vacuum Control Solenoid Valve: Description and Operation

Dual Thermactor Air Control Solenoid Valve:

The dual Secondary Air Injection (AIR) control solenoid assembly consists of two normally closed vacuum solenoids. One controlling the AIR Bypass (AIRB) valve, the other AIR Diverter (AIRD) valve. Both are vented when de-energized, sourced by the intake manifold vacuum reservoir and controlled by the Powertrain Control Module (PCM).

SECONDARY AIR INJECTION STRATEGY

Secondary Air States AIRB Solenoid AIRD Solenoid

Upstream ON ON

Downstream ON OFF

Bypass OFF OFF