D21 Hardbody 2WD L4-2389cc 2.4L SOHC MFI (KA24E) (1990)
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Throttle Position Sensor: Description and Operation
Fig. 26 Throttle Sensor-Soft/Hard Idle Switch
The throttle sensor-soft/hard idle switch is mounted to the throttle shaft. It is a variable resistor (soft idle switch) and an open/close switch (hard
idle switch). The variable resistor circuit (soft idle switch) in the sensor monitors the throttle angle and speed of throttle movement. It supplies a
voltage signal to the ECU in response to throttle position. The open close switch (hard idle switch) circuit is used for diagnostic purposes only.