Mirage L4-1795cc 1.8L SOHC (1994)
Idle Air Control Valve Position Sensor: Description and Operation
DESCRIPTION
The AC valve position sensor converts the changes (increase or decrease) in the valve position of the idle air control (IAC) motor into pulse
signals and inputs these signals to the engine control module. The engine control module determines the valve position from these signals, and also
controls the idle air control motor.
OPERATION
5V power is supplied to the IAC valve position sensor from the engine control module, and the ground connection is positioned in the engine
control module.
5V power is applied to the two IAC valve position sensor output terminals from the engine control module. When the IAC valve position is
changed (increased or decreased) by the DC motor inside the IAC motor, the IAC valve position sensor generates a pulse signal from the opening
and closing between the output terminal and the ground.
