Throttle Full Close Switch: Description and Operation

AIR CONDITIONER SWITCH
When the A/C is turned on, the ECU monitors the signal from the compressor clutch. The ECU uses this signal for controlling idle speed during A/C operation. The A/C switch inputs the ECU through terminal A/C.


CLUTCH SWITCH (M/T ONLY)
This switch is installed on M/T models to inform the ECU of clutch pedal position. This signal is utilized to prevent starter operation unless the clutch pedal is depressed. The Clutch Switch inputs the ECU through terminal N/C.


NEUTRAL START SWITCH (A/T ONLY)
This switch is installed on A/T models to inform the ECU of transmission gear selection. This information is used by the ECU to control starter operation and engine idle operation. The signal inputs the ECU through terminal NSW.


TPS (IDL) SWITCH
The ECU senses whether the throttle valve is open or closed by a switch in the Throttle Position Sensor (TPS). The ECU uses this information to control fuel delivery at idle and on deceleration. This signal inputs the ECU through terminal IDL.