Crown Victoria V8-4.6L SOHC VIN W (2005)
Variable Induction Control Actuator: Description and Operation
INTAKE MANIFOLD TUNING VALVE (IMTV)
Intake Manifold Tuning Valve (IMTV)
WARNING: Substantial opening and closing torque is applied by this system. To prevent Injury, be careful to keep fingers away from lever
mechanisms when actuated.
The IMTV is a motorized actuated unit mounted directly to the intake manifold. The IMTV actuator controls a shutter device attached to the actuator
shaft. There is no monitor input to the PCM with this system to indicate shutter position.
The motorized IMTV unit is not energized below approximately 2,600 RPM. The shutter is in the closed position not allowing airflow blend to occur in
the intake manifold. Above approximately 2,600 RPM the motorized unit is energized. The motorized unit is commanded on by the PCM initially at a
100 percent duty cycle to move the shutter to the open position, and then falling to approximately 50 percent to continue to hold the shutter open.
1. The PCM uses the TP sensor and CKP signals to determine activation of the IMTV system. There must be a positive change in voltage from the
TP sensor along with the increase in RPM to open the shutter.
2. The PCM uses the information from the input signals to control the IMTV.
3. When commanded on by the PCM, the motorized actuator shutter opens up the end of the vertical separating wall at high engine speeds to allow
both sides of the manifold to blend together.
