Component Tests and General Diagnostics

DESCRIPTION
When the Engine rpm is below 2,900 rpm, the Intake Air Resonator (IAR) Control Solenoid Valve is deactivated by the Engine Control Module (ECM), and intake air does not flow from the IAR. At Engine speeds between 2,900 rpm and 3,700 rpm (mid-range), the Solenoid Valve is activated by a signal from the ECM, and intake air flows from the IAR.

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