Summit L4-1795cc 1.8L SOHC (1995)
Idle Speed Motor Position Sensor: Description and Operation
OPERATION
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The Idle Air Control (IAC) valve position sensor converts the changes (increase or decrease) in the valve position of the IAC motor into pulse
signals and inputs these signals to the engine control module. The engine control module determines the valve position from these singals, and also
controls the idle air control motor.
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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.
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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.
