From the owner's manual (you have read it, right?)...
² 2 (Second) gear is normally used for start-up. A 3 (Third) gear
start-up will be allowed only if selected. All other selection(s) will
revert to 2 (Second) gear.
² If the driver starts in 2 (Second) gear and does not pass a throttle
angle of 60%, the transmission will remain in 2 (Second) gear. No
automatic upshift will occur.
² If the driver passes the 60% throttle angle, a 2–1 kickdown will occur,
scheduled by the processor as used in D5. Once the 2–1 kickdown has
occurred, the transmission will remain in 1 (First) gear until 2
(Second) gear is manually selected by moving the gearshift lever. No
automatic upshift will occur.
² Once a 2–1 kickdown has occurred, manually shifting in and out of 1
(First ) gear is allowed until the vehicle comes to a complete stop.
² A shift to 1 (First) with the vehicle at a stop is never allowed.