Maxima SE V6-2968cc 3.0L DOHC MFI (VQ30DE) (1997)
Idle Speed/Throttle Actuator - Electronic: Description and Operation
COMPONENT DESCRIPTION
The IACV-AAC valve is operated by a step motor for centralized control of auxiliary air supply. This motor has four winding phases and is actuated
by the output signals of ECM which turns ON and OFF two windings each in sequence. Each time the IACV-AAC valve opens or closes to change the
auxiliary air quantity, the ECM sends a pulse signal to the step motor. When no change in the auxiliary air quantity is needed, the ECM does not issue
the pulse signal. A certain voltage signal is issued so that the valve remains at that particular opening.