Sentra Wagon FWD L4-1597cc 1.6L SOHC (GA16i) (1989)
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 to signal the ECU when the
throttle is in the idle position.