D4 (O/D) Position

Fig 1: Identifying Power Transmission - D4 (O/D) Position

Courtesy of NISSAN MOTOR CO., U.S.A.

POWER TRANSMISSION - D4 (O/D) POSITION

High clutch Brake band Forward clutch (Does not affect power transmission)	Input power is transmitted to front carrier through high clutch. This front carrier turns around the sun gear which is fixed by brake band and makes front internal gear (output) turn faster.
Engine brake	At D4 position, there is no one-way clutch in the power transmission line and engine brake can be obtained when decelerating.