Variable Induction Control Valve: Description and Operation

1997 MANIFOLD TUNING VALVE (MTV) SOLENOID-PCM OUTPUT
The MTV solenoid regulates the supply of vacuum to the manifold tuning valve. The PCM controls the MTV solenoid. The manifold tuning valve optimizes acoustical tuning of the intake system during wide open throttle operation throughout the RPM range. The valve opens a crossover passage in that connects both sides of the intake manifold plenum.

When energized, the MTV solenoid allows vacuum to reach and close the manifold tuning valve. When not energized, the solenoid closes and vacuum bleeds off from the manifold tuning valve vacuum motor. The manifold tuning valve opens the crossover when the solenoid de-energizes.

EVAP Purge And MTV Solenoids:

The MTV solenoid shares a bracket with the duty cycle EVAP purge solenoid. The solenoids and bracket attach to the right inner fender well next to the dash panel.