Swift L4-1298cc 1.3L SOHC MFI (1997)
As the vehicle speed is accelerated at the 1st gear and reaches the 2nd gear shift point, the 2nd brake solenoid valve turns OFF and closes the relief
circuit. This causes the line pressure (1) to act on the 1 - 2 shift valve. Then the valve moves to allow the line pressure (3) to be applied to the 2nd brake
and the 2nd gear is attained. At this time, the line pressure (3) is also applied to the accumulator to reduce a shock occurring when the 2nd brake works.
The same oil circuit acts in D when the vehicle speed is lowered to the shift down point from the 3rd to the 2nd gear.
In "D" Range (3RD Gear)