Throttle Valve Output Signal (Swift A/T)

Engine ECM converts throttle valve input signals into simple on and off signals which it transmits to the automatic transmission ECM. When gear selector is in "D" or "2", automatic transmission ECM uses these signals to determine proper gear selection. When gear selector is in D, transmission will select and shift transmission into 1st, 2nd or 3rd gear. When gear selector is in "2" position, ECM will select and shift between 1st or 2nd gear.