Quote Originally Posted by istan View Post
D4 -> transmission gets to use all 4 gears
D3 -> transmission gets to use the first 3 gears
D2 -> transmission gets to use the first 2 gears.
Basically, ni lolockout lng nito ang mga gears. This helps prevent gear hunting.
Gear hunting is when the transmission can't decide what gear it wants to be in, too high a gear, no power, tranny shifts down 1 gear, too then u accelerate, then when it shifts to a higher gear, no power again, so tranny shifts down again. So what you do is lock out the higher gear, para magpirmi sya sa lower gear. Hope na gets mo. :D
There's no "D2". It's 1, 2, D3, and D4 on older Civics, and 1,2, D3, and D for the 5-speed A/T Civic.

For 1 and 2, the gear is locked on the respective gear and does not shift up nor down.