Variable Induction Control Actuator: Description and Operation

Intake Manifold Runner Control Actuator:

OPERATION
The valve plates are opened and closed by the IMRC vacuum actuator, which is controlled by the:

- IMRC solenoid.

- Powertrain Control Module (PCM).

Below 3000 rpm:

- The vacuum actuator holding the valve plate closed is vented.

- The spring-loaded vacuum actuator pushes the valve plate open.